How is thread shear area calculated? One has the shear plane corresponding with the threaded portion of the bolt. Fn = Nominal shear strength, Fv = 0.50 Fu for bolts when threads are excluded from shear planes, i.e. For example, I can't … 5. = number of shear planes through threads = 1 for each bolt. Therefore we select a 10 mm MSB10 with a M8 thread section. When a NPT thread seals, although all threads are engaged between pin and box, typically only a few threads act to seal the joint. The bolts resist the loads is a “double shear” load transfer, the joint being a “snug-tightened” type, with the threads included in the shear plane From LRFD Table 7-10, the design shear strength is φRn. metal screws, thread-cutting screws, and for grade 2 (bright) hexhead cap screws. The following equations and calculator will determine the Shear Area For External Thread Screw or Fastener per. The aluminum's shear strength capability can be found by. The thread shear area = A ss When the female and male threads are the same material. : 2 1/16" For shear planes through the threads, we could use the equivalent tensile stress area (As). (60,000 tensile x 0.60 shear factor x 0.606 root area of 1″ threads). X = threads are excluded from the shear plane. For standard coarse pitch thread and fine pitch thread bolts the nominal stress area A s is provided in ISO 898-1 Tables 4 to 7. From Table 103 p 01 in him with a tiny thread L 01 in 3 From Fig. The direction of the net load is parallel to the pitch line and in the analysis this component of the force will be unity. Nails vs Screws The Right Fastener for delay Project Bob Vila. The tables list shear area for threads when Le = 1D. L e :=.2 in⋅ Length of thread engagement This section continues to use E nmax :=0.257 in⋅ Maximum PD of a 1/4-20 bolt as an example. 4. This information is derived from data here. See the reference section for details on the methodology and the equations used. The shear area (Ats)seems like it is 10x off Internal Thread Strength Formula F = Su * Ats Su = shear strength of the nut or tapped material Ats = cross-sectional area through which the shear occurs Ats = pi n Le Dsmin[1/(2n) + 0.57735 (Dsmin – Enmax)] Dsmin = min major dia. The tensile stress area per inch, A s: 0.334 sq. The thread shear area of the bolt is the cylindrical area formed by the minor diameter of the mating internal threads and the length of thread engagement (ref. 8). This shear area can be estimated from the following relation: where L e is the engaged length of bolt thread. We need to find a relationship between ID and shear area to develop internal standards that maximize tapdrill diameter while maintaining 90% of the strength (i.e. Tensile stength of a 1/2 - 13 Grade 8 bolt is listed as 21,300 ln. = tensile stress area of threads, mm² Single shear stress area of threads, A n =∙2= 4 ∙3 2 3=− 3√3 4 ∙ 1 ∴ = 4 F− 3√3 4 ∙ 1 G 2 d 3 = minor diameter of external thread d = nominal diameter of fastener, in n = threads per inch, in¯¹ A n = single shear stress area of threads, in² =∙2= 4 3 and Eq. L e :=.2 in⋅ Length of thread engagement This section continues to use E nmax :=0.257 in⋅ Maximum PD of a 1/4-20 bolt as an example. A thread’s shear stress depends on the force per thread and the stripping area per thread. Short fully threaded bolts are to be designed with threads in the shear plane. Proof load is defined as the maximum tensile force that can be applied to a bolt that will not result in plastic deformation. d3 = 9.853 mm Stress Diameter of the Thread = 10.358 mm Theoretical Stress Area - External Thread = 84.267 mm² Minimum Stress Area - External Thread = 80.762 mm² Maximum Stress Area - External Thread = 85.776 mm² … Where dc = Core diameter of the bolt. n = 1/p = threads per unit (mm) Minimum Length Of Thread (Assuming male and female threads are materials of similar strength). Shear Area For Screw. Shear Area For Female Thread . If material in which the female thread is tapped is significantly weaker#N#that the screw material then J must be evaluated. For shear planes through the threads, we could use the equivalent tensile stress area (As). The input tension force to a bolted connection is a function of A^, while the resisting force must be developed in the mating shear areas ASg and AS^. The fine threads have … Selection of class 12.9 should not be undertaken lightly - its high strength begets other potential problems. Basically, this stiffness shear area is a form factor times the axial area. @Michael- Assuming your bolt is mild steel like A307, and assuming the shear will be in the threads (worst case), Your minimum shear value will be 21,816lbs. The nut spins freely until the bolt threads get to the slotted area. ASTM threads are shorter because ASTM deals mostly with structures; structural connections are generally loaded in shear, and the decreased thread length provides more shank area. Assuming the tapped threads are champhered to the major diameter and the steel is 36,000 PSI yield in shear strength: work out the effective shear area and do the math. Basic major diameter Minor diameter Basic pitch diameter a. Tensile strength values are based on 60,000 psi. of Bolts required = 121.6 / … Thread size: ¾-10 2. Every Keensert has a shear engagement area value in the catalogue. The shear area of the external thread (bolt), which depends principally on the minor diameter of the tapped hole where: The values for shear engagement areas are based on shear failure in the parent material when the parent material is significantly weaker By merely ensuring that the shear load is applied to the body of the bolt, the shear strength can improve by 8,260 pounds. If the cast-in-place anchor does not have a head or nut (straight rod only),there is no bearing area and A brg = 0. ... (ref. The effect of bending of the threads, caused by the action of the fastener's tensile force acting on the vee threads, resulting in a wedging action that decreases the shear area of the threads. shear transfer rate is defined as the net load supported by the thread divided by the area at the pitch line. This is how you can choose the bolt size by calculating the stress in bolts and picking it from the standards bolts list. ARCH 631 Note Set 17.1 F2013abn 3 p I VQ nF connected area connector t x y y a 1” 8” p p p . The internal thread shear area per inch, AS n: 1.72 sq. Consider a thread as a long loaded ledge where the length of the ledge is the pitch circumference times the number of threads engaged times the thickness about 1/3 (fudge factor) the pitch. L e (min) = 2 . This thread shear area can be estimated by (ref. Prior to stripping, shear yielding will typically occur. This part of ISO 898 is applicable to bolts, screws and studs ⎯ made of carbon steel or alloy steel, The stressed area in a bolt can be calculated as. I think the formula what is stated (FOR Shear area) is of no use. At TEMA code, there is a Table D-5 at Section 9 which includes a full bolting data, from which you can locate the recommended min. Shear strengths of bolts by diameter. A TSE threads from the shear plane. Table 1. • NDS Chapter 12 contains tables with Lateral “Z” values ... • D when threads are at least ¾l away from shear plane ... Am = gross x-sectional area of main member, in 2= 16.875 in The nut material is stronger than the bolt material. Critical bolt thread stress area chart is given below for sizes 0-60 UNF to 1 1/2 - UNF. Specifications for metric fasteners are given in Table 8–11. Where: If the threads are excluded in shear, you might be able to use the area of the unthreaded portion for shear. According to EN1993-1-8 Table 3.4 the shear strength of the bolt may be based on the tensile stress area. Shear strength is defined as the maximum load that can be supported prior to fracture, when applied at a right angle to the fastener’s axis. Project Description: The Bolted Joint Analysis calculator allows for stress analysis of a bolted joint, accounting for preload, applied axial load, and applied shear load. Double shear is a load applied in two planes where the fastener could be cut into three pieces. Screw Thread Stress Area Table Critical bolt thread stress area chart is given below for sizes 0-60 UNF to 1 1/2 - UNF. Here are three possible scenarios for this type of failure. Expanded discussion of “alternative design” bolting components, bolting assemblies, and pretensioning methods (2.12). ... Torque vs Tension Bolts Table Chart SAE J429 Bolts; Torque Conversion. π. For inch series, the root area = (PI/4)* [D- (1.3/n)]2. Equiv Pin Dia = Diameter of Column or Pin used for column or bending calculations. Threads can be present in the “grip” area between the nut or washer and the bolt head, but cannot be fully engaged at the interface of the two plies that are Resistance to this happen all bolts used as against the strength of shear strength. From the table at right, for a strength class of 10.9 and a maximum allowable load of 200 kgf, the suitable bolt is a 318[kgf]M8. i.e. The input tension force to a bolted connection is a function of A^, while the resisting force must be developed in the mating shear areas ASg and AS^. dc = 2.97mm. of sufficient length may be wedge tensile tested. To determine the force required to strip the threads, multiply the shear strength by the cross sectional area being sheared. To determine the shear strength of the material, the total cross-sectional area of the shear plane is important. How can Weight Can say Screw Hold ToolsOwner. n s ... n = net area of the bolt at thread = 0.78 p __ d 4 2 for ISO bolts. … The tensile-stress area of the external thread (bolt) For steels of up to 100,000 psi ultimate tensile strength, where: At = tensile stress area of bolt thread. D = basic major diameter of the thread n = number of threads per inch For steels of over 100,000 psi ultimate tensile strength, where: Esmin = minimum pitch diameter of external thread They are tensile stress area of the bolt, A , ex-s ternal thread shear area, AS , and internal thread shear area, s AS^. The direction of the net load is parallel to the pitch line and in the analysis this component of the force will be unity. and apply to carbon steel screws and SEMS only. Material shear strength of weakest part: MPa : pitch diameter d 0 =(d 2 +d 3)/2: mm: tensile stress area A t =π/4 d 0 2: mm 2: shear area A th = 0.5πd 0 L e: mm 2: Shear strength F = T A th: kN: Tensile stress σ = F / A t: MPa : www.tribolog y-abc.com The proof load of a screw made from a particular material is the maximum load the screw can withstand without permanent deformation, and is given by ( 1) as the product of stress area ( Table 1) and proof stress ( Table 2 ). (Table 2.5). It is assembled with screw shear planes then this table. the shear stress in the nut or the rod threads reaches the ulti-mate shear stress. Table III -- Summary of Thread Lubricants; Type of lubricant Useful design temperature limit, °F ... has slots in the top, and the thread diameter is undersized in the slotted portion. 1. shear transfer rate is defined as the net load supported by the thread divided by the area at the pitch line. fed-stdh28 standard. n = number of threads per inch. Pull-Out strenght = shear engagement area x ultimate shear strength of the parent material. The shear area of the internal thread is the effective area at the minimum major diameter of the external thread multiplied by the number of engaged threads. 1. Research has shown For example: for stud bolt size 3/4" - No. Similar to the stressed area, the thread shear area is the cross-sectional area of the threads effective in resisting shear forces to the bolted joint. Acme/Stub Acme Thread Shear Rating (Thread Stripping) Another common form of thread yielding occurs when the applied axial tension exceeds the maximum allowable thread shear rating. The radial stress (_r) and axial stress (_a) are normalized to the shear transfer rate. All the rules of thumb say that hole needs to be 2xD to equal the strength. The shear stress in the internal threads is calculated by: The factor of safety on internal thread shear with … The weakest points in a bolt is the stressed area in the thread root. For example, a thread with a nominal diameter of 6 mm and a pitch of 1 … 1.4.3. bolt root area directly related to bolt size. The shear capacity of the bolt is given by . The bolt thread shear area per inch, AS s: 1.21 sq. Basically the shearing area is calculated as: Area=0.5*Pi*d*L. where d is pitch diameter and L is engagement length. The shear area is approximately the cylindrical surface at pitch diameter times the number of engaged threads. in. Capacities of ASTM A36 Steel Threaded Rods used for Pipe Support Hangers Based on allowable stress of 12,000 psi reduced by 25% using root area in accordance with ASME Standard B31.1 and MSS Standard SP-58. In general the tensile stress area and the shear stress area are different. See the instructions within the documentation for more details on performing this analysis. The thread size designation for metric thread is given as "M[dia] x [pitch]". See Eq. UNF thread has a larger minor diameter than UNC thread, which gives UNF fasteners slightly higher load-carrying (in shear) and better torque-locking capabilities than UNC fasteners of the same material and outside diameter. Selection of class 12.9 should not be undertaken lightly - its high strength begets other potential problems. Bolt Safe Working Loads (lbs) Safe tensile load at 6,000 psi load; safe shear strength at 7500 psi load) Note: These values seems awfully low to me. Fastener Bolt Thread Stress Tensile Area Table Chart for ANSI Inch Size . Table 1 Accuracy of bolt preload application methods [1] Method : Accuracy . Box Tensile Area (in2) 1.4.4. A = (π / 4) (d n - 0.9743/ n) 2 (1) where. If I remember correctly, this is the same equation shown in AISC's table 7-17 notes. Other head styles may be axial tensile tested. Research has shown Test matrix. UNF thread has a larger minor diameter than UNC thread, which gives UNF fasteners slightly higher load-carrying (in shear) and better torque-locking capabilities than UNC fasteners of the same material and outside diameter. For steels of over 100,000 psi ultimate tensile strength, where: Esmin = minimum pitch diameter of external thread . Significant differences in recommended values can be seen. From Table (coarse series), we find that the standard core diameter of the bolt is 3.141 mm and the corresponding size of the bolt is M4. D = basic major diameter of the thread. 5. In general the tensile stress area and the shear stress area are different. I'm looking for a formula for internal (female) thread shear area as a function of inner diameter. L e. To ensure that the screw fails before the thread strips it is necessary the the shear area is at least 2 times the tensile area. (c) Former Tables 20 through 30 have been eliminated because the allowances and tolerances contained in them was determined to be redundant with data provided in Table 2. There are published form factors in Timoshenko & Gere; Roark; or Cowper (for a rectangular area a form factor of about 0.85 is used). The tensile strength of the material being tapped: 60,000 PSI In your example: 0.210 x Pi x 13 engaged threads = 8.6 x 0.50/3 = .142 square inches. Shear Area of External Threads (Continued) A s,e 1 é1 ù (E s,min − K n,max )ú = π ⋅ n ⋅ K n,max ⋅ ê + 3 ë 2n û This equation appears in the ANSI standards and gives the shear area per unit length of engagement. d) For structural bolting: 70000 N (M12), 95500 N (M14) and 130000 N (M16) Mass and Weight - the difference ; Bolt Torque Calculator; US Bolts - Tensile Strength and Proof Loads ; Proof Load. Trying to calculate the shear stress for thread, want to understand a bit more behind the formula. The radial stress (_r) and axial stress (_a) are normalized to the shear transfer rate. It is conservative to design all cases assuming threads are included in the shear plane. For Bolt N's calculation the root area must be used (as the shear plane intersects the threads), which is 0.302 sq-in. threads from the shear plane. The proof load of a screw made from a particular material is the maximum load the screw can withstand without permanent deformation, and is given by ( 1) as the product of stress area ( Table 1) and proof stress ( Table 2 ). The designer pruposely assumes a "root" stress area smaller than the "real" tensile stress area to be sure that the rod isn't overstressed in service. Strength of bolt joints withstanding bending forces. Cap screws are a typical use. This gives you the total shear area of the engaged thread. In much the same manner as the external thread shear strength of the bolt, the insert internal thread shear strength is based on the major diameter of the mating external threads. 2A E. xtErnAl. the geometry of their heads reduces the shear area in the head compared to the stress area in the thread. Specifications for metric fasteners are given in Table 8–11. = 31.8 kips / bolt No. Ftu-ext = ultimate tensile strength of external threads (bolt) Ftu-int = ultimate tensile strength of internal threads (aluminum part) Basically if the aluminum part's thickness is equal or greater than the bolt diameter, use Le = thickness. Figure 2 illustrates two possibilities for the applied shear load. According to EN1993-1-8 Table 3.4 the shear strength of the bolt may be based on the tensile stress area. d2 = 10.863 mm Basic Minor Dia. In the literature, computations use only one single thread. Table 7-15 in the Manual gives dimensions of high-strength fasteners. TENSILE STRESS AREA OF BOLT - IMPERIAL & METRIC THREADSTENSILE STRESS AREA OF BOLT - IMPERIAL & METRIC THREADS Nominal Thread Diameter 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 1 Imperial Threads BSW TPI in2 BSF 26 0.0356 22 0.0567 20 0.0839 18 0.1158 16 0.1520 16 0.1980 14 0.2430 Assembly strength is a function of shear area and the shear strength of the parent material, tensile strength and cross sectional area of the bolt. Each Bolt withstands a shear Force F s = F v / (Number of bolts) The resulting shear bolt stress τ n = F s /A Note: Each bolt is assumed to withstand the same shear force. Most of the tables are based on 75% full thread. The shear capacity given in the tables must be reduced for large packings, large grip lengths, kidney shaped slots or long joints when applicable. (D - 0.64952.p )] This assumes that the male and female thread materials have the same … The fine threads have … These include bolts and screws having a low or countersunk head (see 8.2). A325-X or A490-X In addition, when a bolt carrying load passes through fillers or shims in a shear plane, the provisions of LRFD section J3.6 apply. The thread equations given previously for tensile stress area and for minor area were used in constructing the table. Tables like this are available in texts like Bickford and others on fastener strength. Values shown in these tables are based on steel bolting that has been well-lubricated with heavy graphite and oil mixture. Torque values are based on friction coefficients of 0.12 between threads and 0.14 between nut and washer or head and washer, as manufactured (no special cleaning).] Hex and Hex Washer head machine screws . Table of friction Values associated with civils and structures Notes : Friction is lower when one of the materials is wet Experimental results in the published literature show that at low normal stresses, as involved in civils design,the shear stress required to slide one rock over another varies widely between experiments. Pin Tensile Area (in2) 2. P S = p s A s. where: p s is the shear strength of the bolt A s is the shear area of the bolt. N = threads can be in the shear plane. the standard thread sizes in Table 2 whenever possible instead of those listed in Table D-1. UN and UNR Bolts Tensile Stress Area. 7. They are tensile stress area of the bolt, A , ex-s ternal thread shear area, AS , and internal thread shear area, s AS^. Thread Stress Area Calculator and Equation Bolt Threads, Grade, Bolt Strength ... Shear Area Internal and External Thread Formula and Calculation Per FED-STD-H28/2B. ANSI Hardware Design Guide and Data. 1035, 1038 are high-carbon, medium alloy steels that can be heat treated to 120 ksi (827MPa) tensile strength. d1 = 10.106 mm Nominal Minor Dia. shear The stressed area depends on the type of threads - coarse threads reduces the stressed area compared to fine threads. The shear stress in each bolt is calculated to ensure the design is safe.. Figure 2 illustrates two possibilities for the applied shear load. If threads are tapped into a weak material (cast iron, Aluminum, plastic), the nut threads may fail first even though the shear area is greater. Thread Friction Value = 0.120 DERIVED INFORMATION _____ Basic Pitch Dia. Thread pitch 0.5 Meff = 4mm I get an A-shear area of 0.04291 in2 or 27.689 mm2 I got Fmax-nut = 1039lbs That does not seem to make sense since I *think* a steel M3 screw can only take about 475lbs. One has the shear plane corresponding with the threaded portion of the bolt. Screw Shear Area = The amount of shear engagement per inch of length in an external thread. Now take this and multiply by the same 72,000 PSI and it results in approximately 21,740 pounds. This thread shear area is a function of the thread size and type as well as the length of thread engagement. Table 7-15 in the Manual gives dimensions of high-strength fasteners. About 59 ksi (407MPa) is the usual tensile strength for these materials. Table V -- Bolt Torque [No lubrication on threads. Tensile Area = Effective Tensile Area (in²) for externally threaded parts. If threads are tapped into a weak material (cast iron, Aluminum, plastic), the nut threads may fail first even though the shear area is greater. Double Shear Through Threads (½-13 SAE J429 Grade 8) Double Shear Through Body (½-13 SAE J429 Grade 8) ½-13 Thread Root Area: 0.126 sq-in Minimum Body Area 0.191 sq-in 60% of Tensile Strength: 90,000 PSI 60 % of Tensile Strength: 90,000 PSI Double Shear = 2 x 0.126 sq-in x 90,000 PSI Double Shear = 2 x 0.191 sq-in x 90,000 PSI Double Shear = 22,680 lbs. 3” connected area p p p Bearing of a Bolt on a Bolt Hole – The bearing surface can be represented by projecting the cross section of the bolt hole on a plane (into a rectangle). In the table, As has been taken as equal to At . • NDS Chapter 12 contains tables with Lateral “Z” values ... • D when threads are at least ¾l away from shear plane ... Am = gross x-sectional area of main member, in 2= 16.875 in Fed-STD-H28. Fastener and Thread Design Menu ISO Hardware Engineering Data ANSI Hardware Engineering Data Mechanics / Strength of Materials Menu. 8). (d) Former Tables 31 through 40 have been moved to Nonmandatory Appendix D and were ASTM threads are shorter because ASTM deals mostly with structures; structural connections are generally loaded in shear, and the decreased thread length provides more shank area. threads-included option. 6. This formula from Fastenal Corp is confusing and seems way off. Shear Area Internal & External Thread Formula per. Thanks for your reply. If there are x bolts( numbered n = 1 to x). The difficulty lies in determining the cross sectional area in which the shear will occur. When the bolt is subjected to shear load, also use a dowel pin. Values of design shear strength for A325, A490, and A307 are listed in LRFD Table 7-10 7. Examples are shown in Table 1 and Table 2. A t / [0.5 . Therefore the effective length is around 0.047 inches, resulting in a … Nut Shear Area = The amount of shear engagement per inch of length in an internal thread. I'm gonna take a WAG and call it about 20,000 lb per bolt. fed-stdh28 standard. 9. At = tensile stress area of bolt thread. To determine the shear strength of the material, the total cross-sectional area of the shear plane is important. This value is used to calculate the pull out strenght in any parental material. Shear Area of Internal Threads (Continued) E maximum pitch diameter of the internal threads D E 3 1 2n 1 A π D n n,max s,i s,min s,min n,max ≡ =⋅ ⋅⋅ + − Similar to the previous derivation, an equation that takes into account the tolerances of the thread system can be derived to compute the shear area of the internal thread. It is conservative to design all cases assuming threads are included in the shear plane. A. major diameter – the largest diameter of a fastener thread B. minor diameter – the smallest diameter of a fastener thread C. pitch – the linear distance from a point on the thread to a corresponding point on the next thread – measured parallel to the axis of the thread D. lead – the linear distance that a point on a fastener thread will advance axially in one Shear area of the internal thread. A sh = shank area of the bolt = p __ d 4 2. The shear area terms AY and AZ are used in forming the shear deformation part of the stiffness matrix. 6. Maximum minor diameter of internal thread. Bolt material tensile strength in PSI: SAE Grade 5 – 120,000 PSI 3. 12 0. The Shear Rating is the maximum allowable axial load that can be supported across the Thread Shear Area. Screw Shear Area = The amount of shear engagement per inch of length in an external thread. It must be multiplied by the length … of threads : 10 per inch - Root area : 0.302 inch 2 per bolt - Wrench dia. tan 30°] where p is the thread pitch d is the thread nominal diameter m eff is the effective thread engagement (axial) D 2 is the nut thread pitch diameter Table 7-2 in the 3rd Edition AISC LRFD Manualprovides a convenient tabulation of combinations of grip, ply thickness adjacent to nut, and number of washers needed when it is desired to exclude the threads from the shear plane. Removed requirement and prohibits hand wire brushing of galvanized faying surfaces in slip-critical joints. In this example, the nut threads will shear out the bolt … It is designed to introduce a factor of safety in thread strength calculations. External Threads (Screws): Major Diameter (Max): Nominal Major Diameter Major Diameter (Min): Nominal Major Diameter - max(.05/tpi, .005) Values shown in these tables are based on steel bolting that has been well-lubricated with heavy graphite and oil mixture. The effect which production variations in the threaded assembly, such as slight hole taper or bellmouthing, can have on thread strength. This thread shear area is a function of the thread size and type as well as the length of thread engagement. In much the same manner as the external thread shear strength of the bolt, the insert internal thread shear strength is based on the major diameter of the mating external threads. 9). For standard coarse pitch thread and fine pitch thread bolts the nominal stress area A s is provided in ISO 898-1 Tables 4 to 7. 8 Mar 11 16:34. Threads can be present in the “grip” area between the nut or washer and the bolt head, but cannot be fully engaged at the interface of the two plies that are Size Root area, in. Feb 5, 2009 #5 krithika. in. A ss = 0.5. π. d p. L e = 0.5 π (D - 0.64952.p ). 4 for strip-ping areas, per thread, for external and internal threads. Axis of screw thread . According to FED-STD-H28/2B, the thread shear area for an internal thread is calculated by: where d p.int is the pitch diameter of the internal thread and L E is the length of thread engagement, which is calculated in the same manner as for the external thread shear. 8. Definition of bolt classes 4.6, 4.8 etc. Shear Area of Internal Threads (Continued) E maximum pitch diameter of the internal threads D E 3 1 2n 1 A π D n n,max s,i s,min s,min n,max ≡ =⋅ ⋅⋅ + − Similar to the previous derivation, an equation that takes into account the tolerances of the thread system can be derived to compute the shear area of the internal thread. Related resources: Thread Tensile Stress Area Calculator; Thread Stress Area Calculator - For Less than 100,000 psi Material Calculator Condition Shear Plane Load Orientation Assembly Preload Quantity Tested 1 Body Tension-only 0° None 6 2 Body Shear-only 90° None 3 3 Threads Shear-only 90° None 3 4 Body Shear-only 90° High 3 5 Threads Shear-only 90° High 3 6 Body Shear and tension 45° None 3 7 Threads Shear and tension 45° None 3 in. For metric series, the root area = (PI/4)* (D-1.3P)2.

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