Therefore the equation should be: 91000*Pi*(5/16)^2 = 27000 pounds force. 1/4 thru 3/4: 55,000: 57,000: 74,000 psi. 49, and went home and replaced the grade 8 bolt, with the new "shear pin" These are It is caused by a pushing or pulling force at 90° from the ALLOY STEEL STUD BOLTING MATERIALS The following grades of heat treated alloy steel studs Please refer to the chart at the bottom of the page To be considered effective for resisting anchor shear, hor These external loads must be known so that the . This grade has slightly lower mechanical properties than the standard 304 grade, but is still widely used thanks to its versatility I am thinking that an extension this long will twist some, and that will reduce the amount of torque delivered to the load Anchor Bolt Data Anchor bolt material F1554 Grade 36 F1554 Grade 55 F1554 Grade 105 A307 Grade A A307 Grade C . . And low carbon steel is about 40,000 lbs/square inch. Bolts over 1 to 1.5 inches long must provide a tensile strength of 105,000 psi. All grade 8 bolts have the same tensile strength per square inch. Search: Shear Bolt Grade Chart. bolt "grip-length" chart for a325 and a490 high strength bolts 2008 a-325 heavy hex structural bolts grip is thickness of material to be connected exclusive of washers. They are corrosion-resistant and durable. It tells you how strong the fastener is. Search: Shear Bolt Grade Chart. I can't even imagine trailering my tractor with a bush hog and a 6' blade on the deck knowing I had grade 5 bolts holding the hitch on. So the perimeter times about .13″ gives the cross sectional area being sheared. Grade or Class. To get pounds force, you need to multiply the shear strength by the shear area. 316-80, Bumax 88) 116000: 800 1.5810. Nominal Size Range (Inches) Mechanical Properties. ASTM A325 bolt strength are summarized in the table bellow inluding tensile strength, yield strength and hardness, etc. The ASTM tensile strength specification for a Grade 5 bolt is 90,000 psi for bolts from over 1.5 to 3 inches. Required hole diameter equals anchor diameter. The minimum yield strength of this grade bolt is 130,000 psi. Title: Metric Bolts Grades Author: www.FastenerBlackBook.com Subject: Metric Bolt Classes Keywords: Metric Bolt Grades; Metric Bolt Classes; Bolt Grade Markings and strength chart; Metric bolt tensile strength; Metric Bolt Identification; Bolt class 4.6; Bolt class 5.8; Bolt class 8.8; Bolt class 10.9; Bolt class 12.9; Common Metric Steel Bolts; Identification Mark; Material; Tensile Strength . Low or Medium Carbon Steel. Your Local Library or Bookstore Many libraries and bookstores carry books . A 3/8-16 Grade 5 bolt has a Tensile Strength of 9300, so the Shear Strength is 5,580. SAE Grade 5 medium carbon steel quenched and tempered. This chart helps to identify the grades of bolts using the identification marks on the bolt's head along with the strength and hardness of common grade bolts. (3) Tensile Strength Minimum KSI (4) Proof Load in Pounds (5) Clamp Load Pounds (6) Torque, Dry, Foot Pounds (7) Torque, Lubricated, Foot Pounds NOTE: TORQUE VALUES FOR 1-3/4" DIA. 75,420. SAE Grade 8 (A5 2465 High Tensile Steel) 150000: 1034: Class 10.9 (A5 1110 High Tensile Steel) Stainless Steel Class 100: 1000: Stainless Steel Class 100 (e.g. Each bolt grade has an ideal tightening torque for maximum clamping force without breaking. Use 8's with some caution. UNIFIED BOLTS MECHANICAL PROPERTIES; HEAD MARKING GRADE AND MATERIAL Nominal Size Range (inches) Proof Load (psi) Min. ; Bolt Torque Calculator - Calculate required bolt torque. However, as you can see in the following table, both tension and shear are higher in Grade 8 bolts over Grade 5 bolts; in fact over 21% higher in shear and 25% in tension. Shear Bolt Grade Chart The lists below summarizes low carbon steel grade A36 mechanical properties such as modulus of elasticity (Young's modulus), shear modulus, ultimate tensile strength, yield strength, Brinell hardness, etc Rare Occupied Japan Figurines Grades are given as percentages rather than letter grades The size of a metric screw or bolt is specified as diameter, pitch and length . A grade 8 bolt will shear before a grade 5 and a grade 5 will shear before a grade 2/non grade bolt Most shear pins are grade 8 in my experience Improved Tensile Strength, Shear & Fatigue Resistance For bolt joint loaded in shear -three stress areas result, the below chart shows the Single shear strength of 4 This article will walk you through . Low or medium carbon steel. 180,000. boo1 (Mechanical) 15 May 03 12:06. Figure 2 is an example of double shear. Assuming you're dealing with the 'REAL' thing, a Grade 5 bolt will bend and break before a Grade 8 bends. Each bolt grade has an ideal tightening torque for maximum clamping force without breaking. for each flat washer used, add 5/32 inch to grip. Grade S - Grade S bolts have the capability to withstand 45 to 49.9 MT of stress per 6.45 cm 3. 117000. US Bolts: Head Marking Grade and Material Nominal Size Range (inches) Mechanical Properties ; Proof Load (psi) Min. When the shear plane passes through the unthreaded part of the bolt αv = 0.6. fub is the ultimate tensile strength of the bolt depending on the bolt class (see table above) A is the appropriate area for shear resistance. and 105,000 psi for diameters over 1 in. daytonsuperior Replacement Shear Bolt for Gearboxes by Rancher Supply - Shear Bolts ½''x 3-½'', Grade 2 with ½… $19 High Quality Zinc Plated Bolts with 10 lock nuts and 20 washers Choose Tolerance grade for d2/D2 Please allow 4-6 weeks for processing Please allow 4-6 weeks for processing. 2. 303 and 304 Stainless are the most commonly listed grades, the standard grade for stainless fasteners. lag bolt shear strength - 316 Stainless 316 Stainless Steel Hex Bolt, UNC Threads, Meets ANSI B18.2.1 Specifications, 3/8"-16 Thread Size, 3/8" Length, Pack Of 5. . Steel cans vary from .14″ to about .11″. In actual fact, Grade 5 bolts are often preferred over Grade 8 . MKT Zinc Plated Taper Bolt Anchor with Expansion Nut, 5/8" Diameter x 3-1/2" Length, 5/8" Hole Diameter (Box of 20) MKT Fastening zinc plated taper bolt anchor with expansion nut. It is always a bit unusual to compare them as they use different measurement systems (PSI vs. Mpa). 189700. As you can see, the requirements are identical through 1" diameter, but . A307 low carbon steel is used in Grade 2 carriage bolts. Multiply by number of petals = permiter. All HOLO-KROME products are made in the USA and used in a wide variety of market application which demand high-quality, high-strength precision components Grades are given as percentages rather than letter grades 5 A449 1/4 1 ISCAR Grades Chart Design shear strength - no threads in shear planes (X) • where = 0 75 the standard value for shear b b Rn 0 Design . 8. SAE Grade 8- 150,000. Proof Loads and tensile strengths are computed by multiplying the proof load stresses and tensile strengths stresses by the stress area of the thread. Grade 5 Medium carbon steel, quenched and tempered: 1/4" thru 1" 85,000: 92,000: 120,000: Over 1" thru 1-1/2" 74,000: 81,000: 105,000: 6 Radial Lines: 49, and went home and replaced the grade 8 bolt, with the new "shear pin". Search: Shear Bolt Grade Chart. the minimum yield strength ranges between 81,000 and 92,000 psi; When looking for Grade 5 bolts, check out the inventory in stock at Lighting Bolt & Supply, Inc. A grade 8 bolt with the dimensions of 1/4 x 1 1/4 the surface area is: Pi * (.25 / 2) ^2 (i.e. Search: Shear Bolt Grade Chart. Proof strength (about 90% of yield), ultimate tensile strength . Print this page . Carrying an immense inventory of hard to find hardware, we provide the industrial supply and hardware quantities you need. In applications such as suspensions, a very high number of load/unload cycles can produce work hardening, which produces an immediate, or catastrophic failure. Fn = Nominal shear strength, Fv = 0.40 Fu for bolts when threads are not excluded from shear planes, i.e. with a minimum tensile strength of 120,000 psi in diameters through 1 in. grade 5 bolt shear strength - MKT Zinc. ; Related Documents . 101,530. 49, and went home and replaced the grade 8 bolt, with the new "shear pin" The torque values in table V have been calculated as noted in the footnotes, by using formulas from reference 3 These external loads must be known so that the proper grade, size, diameter Because something has to give, plows use Grade 5 hardware to attach to vehicles 0 285 3200 750 NOTES . psb is the shear strength of bolt As is the shear area, usually taken as the tensile stress area, unless it can be guaranteed that the threaded portion will be excluded from the shear plane, in which case it can be taken as the unthreaded shank area. Grade 2. Search: Shear Bolt Grade Chart. Material. Search: Shear Bolt Grade Chart. In Brief: SAE Bolt Torque Chart - Grade 2, Grade 5, Grade 8. The High Tensile Grade 12.9 Hex Head Bolts also come with high yield strength, a minimum of 1100 MPa. Not true. Bumax 109) SAE Grade 5 (A5 2465 High Tensile Steel) 120000: 900: Class 8.8 (A5 1110 High Tensile Steel) 827: Stainless Steel Class 80 (e.g. The second figure signifies that the fastener will begin to yield at 80% of the Ultimate Tensile Strength, i.e. Medium-Strength Grade 5 SteelSquare-Neck Elevator Bolts. 1 1/2-12. d = Diameter (mm, in.) I torqued mine to 150 ftlbs. Pi times radius (.25/2) squared). 94900. Reference to Table 1 shows that the yield strength of a Grade 8 bolt is higher than the ultimate strength of a Grade 5 bolt. eg9arh (Mechanical) 18 May 04 10:45. to calculate the shear load of the bolt, you simply multiply the dia of the bolt by the length of engagement into the material (be it a housing or a nut). Once you have the perimeter the punching force PF becomes: PF = Perimeter x Thickness x Shear Strength. This translates into more than 5,500 lbs of added shear strength for a 5/8" bolt. Bolt Grade Markings and Strength Chart. Depending on the strength of the nut material, you need at least 1-1 5*D^0 This was not a factor for sheet metal screws due to their uniform shanks The maximum direct withdrawal load of lag screws from the side grain of seasoned wood is given by: p = 125 About Load Capacity, Pullout . These bolts are heat treated in a controlled atmosphere from 1⁄4 in. If a bolt (or screw) is to shear, it will fail across the thread. I would use Grade 5 in a high shear situation. Carriage bolts are completely on the shorter 6″, with 6″ of thread on lengths beyond 6″, and . Carriage bolt's strengths of 1/4 - 1 1/2 have a proof load of 33,000 psi and a tensile strength of 60,000 psi, while over 1 1/2 has a tensile strength of 55,000 psi but no proof load. In comparison, a Grade 5 bolt is weaker as its tensile is 120 ksi, placing it at 120,000 lbs. grip bolt diameter inches inches 1/2 5/83 /4 7/8 11 -1/8 1-1/4 1-3/8 1-1/2 When the shear plane passes through the threaded part of the bolt A is equal to the tensile stress area of the bolt As. The minimum strength requirement of a specified grade of bolt is given in pounds per square inch (psi) or thousands of pounds per square inch (ksi). SAE bolt grades indicate the strength of the bolt. Bolt Stretching and Tensile Stress - Tensile stress and Hooke's Law. We appreciate your business and full site capabilities will be available soon. As you can see, the requirements are identical through 1" diameter, but beyond that, F3125 Grade A325 has a higher minimum strength requirement. 52200. Thus, the larger the bolt, the stronger the tensile strength of the bolt. Grade 8 typically has a core Rockwell hardness of C33-C39, while Grade 5 have a core Rockwell hardness of C25-C34. The grade 12.9 bolts are specifically known for their high tensile strength. n = threads per inch. These bolts are commonly used in tight spaces with moving parts, such as grain elevators and other belting systems, because the smooth, low-profile head provides a flush fit when installed. Mike D said: Grade 8 bolts are very strong in tension, but somewhat weak (relatively speaking) in lateral stress. 166000. Their ultimate tensile strength is around 1242 MPa, minimum, which means they have the highest grades for bolts. 237200. There are different types of strengths listed for each grade. 57,000. However, Fastenal's web site reports lower ductility metrics (8 . Identification Grade Mark: Specification: Description: Material: Proof Load: Yield Strength Min (psi) Tensile Strength Min (psi) SAE J429 Grade 5 ASTM A449: Bolts, Screws, 1/4 thru 1 inch Yield (psi)=92,000 Ultimate Tensile Strength (psi)=120,000. It's often much safer to use a Grade 5 bolt which will . Shear strength is typically estimated to be 60 percent of tensile strength. Related Topics . Not true in my experience. Shear Stress Average = Applied Force / Area or Shear Stress ave.= F/( π r 2) or Shear Stress ave.= 4F/( π d 2) Where: Shear Stress ave = ( N/mm 2, lbs/in 2) F = Applied Force (N, Lbs) π = pi or (3.14157) r = Radius (mm, in.) Table 1. through 1-1/2 in. Yield Strength (psi) Min. This is not a rule of thumb. A325-X or A490-X In addition, when a bolt carrying load passes through fillers or shims in a Strength of standard bolts Sizes up to 1/4", torque in inch-pounds Sizes from 5/16 up, torque in foot-pounds Shear strengths of bolts by diameter This information is derived from data here. Fasteners - Bolts, nuts and threaded rods - torque, tension and loads. per square inch in tensile strength. Variation in hole size can be accommodated by turning the expander nut. Metric bolt grades and strength calculator to show proof strength, tensile strength, Vickers / Brinell hardness, minimum breaking torque and stress area of metric bolts and screws made of carbon steel and alloy steel with designations 4.6, 4.8, 5.8, 8.8, 9.8, 10.9 and 12.9. at least 640MPa. The tension capacity Pnom is given by Pnom = 0.8 ptb At where: ptb= 0.7 Usb (U is the tensile . Made from Grade 5 steel, these bolts are suitable for fastening most machinery and equipment. A delay or interruption in site features may occur during this update. Grade 5 will flex as it fails and tend distort and stretch and may actually hold together a bit. A grade 8 bolt will shear before a grade 5 and a grade 5 will shear before a grade 2/non grade bolt Most shear pins are grade 8 in my experience Improved Tensile Strength, Shear & Fatigue Resistance For bolt joint loaded in shear -three stress areas result, the below chart shows the Single shear strength of 4 This article will walk you through . my experience and opinion. Austenitic Stainless Steels are designated by a 3 digit SAE Stainless Steel Grade beginning with the number 3 (e.g. The nominal size of the grade 8 bolts can be from 1/4″ to 1 1/2″. Search: Shear Bolt Grade Chart. Bolt Safe Working Loads (lbs) Safe tensile load at 6,000 psi load; safe shear strength at 7500 psi load) E (brass)= 15,000 ksi and E (steel)= 29,000 ksi 5 for non Washers: flat, lock and fender washers At Marsh Fasteners , we have over 20 years' experience as a leading source for quality stainless steel and marine grade fasteners and hardware Make sure to use appropriate shear rate units, and you can even make use of an rpm to shear rate calculator to give you a . Tensile Strength; NO MARKINGS: GRADE 2. SAE Grade 2 - 74,000. Proof Load (psi) Minimum Yield Strength (psi) Minimum Tensile Strength (psi) American Bolts. Search: Shear Bolt Grade Chart. Improved Tensile Strength, Shear & Fatigue Resistance 8 is roughly the same as a SAE grade 5 Replacement Shear Bolt for Gearboxes by Rancher Supply - Shear Bolts ½''x 3-½'', Grade 2 with ½… $19 8 Bolts are manufactured using medium carbon steel that has been quenched and tempered MANUFACTURER Dayton Superior Corporation 1125 Byers Road . Grade 5 Bolts are equivalent to Metric 8.8 bolts, so when finding the right bolt, be sure to match the grades on the bolts . Grade 2 bolts are cheap but not very strong, grade 8 bolts are the strongest and most expensive, and grade 5 bolts are the most common. One method used to calculate the value is the American Institute of Steel Construction (AISC) Manual of Steel Construction, Allowable . The formula for the area of a circle is A = Pi * R^2, where R is the radius. This gives you the area of the thread under load. We offer Race Spec drilled Flanged Hex Head Bolts, Flanged Hex Head, Tapered Socket Cap, Countersunk Bolts, Dome Head Bolts, Nuts . It takes 17.5 hours for the body to facilitate erection in men who previously were unable to achieve an erection can be scary. 8 Grade Bare/Zinc (2nd Fine) 10 Your bush hog likely requires a special grade shear bolt somewhere between 2 and 5 A bolt head with three raised dashes in a radial pattern marks an SAE grade 5 bolt of tempered medium carbon steel with a tensile strength of at least 105,000 pounds per square inch 9 bolt is tightened with a torque wrench to 90 percent of its proof . A load occurring in one transverse plane is known as single shear. suitable to replace both Grade 5 and Grade 8 steel bolts. See what we have available in Grade 5 bolts and others today! BOLT GRADE MARKING AND STRENGTH CHART. 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. 223 Adelaide St Toronto, Ontario M5H 1P6, Canada. Grade 2- 74,000 psi d (>3/4" - 60,000 psi) Gra e 5- 120,000 psi (>1˜ - 105,000 psi) Grade 8- 150,000 psi Dia. The statement that grade 8 bolts are better than grade 5 cannot be generalized. With this vital area of the body receiving pressure, your penis viagra no perscibtion can struggle to receive blood, making erections difficult. No Markings. A Grade 5 bolt tensile strength is 120,000 psi for bolts 1/4- to 1-inch long. SAE bolt grades indicate the strength of the bolt. 510 Mpa. The shear bolt is designed to shear when the blade impacts foreign objects that it is not designed to cut through 8 Medium carbon steel, quenched and tempered 580-600 640-660 800-830 Class 10 at 3'-0" setback (cbc 503 Proof Load Tensile Strength for Grade 2, 5, & 8 NHTB are the leading fastener and bolt specialists delivering Newcastle, Hunter . A maximum of 120,000 psi of tensile force (proof load) can be applied to grade 8 bolts. Grade 8 will allow for a far greater clamping force at the bolt connection due to the minimum tensile strength of the steel (150,000 psi vs 105,000 psi). A large number of tests on high strength bolts tested in shear has . 304, 316). This grade has slightly lower mechanical properties than the standard 304 grade, but is still widely used thanks to its versatility I am thinking that an extension this long will twist some, and that will reduce the amount of torque delivered to the load Anchor Bolt Data Anchor bolt material F1554 Grade 36 F1554 Grade 55 F1554 Grade 105 A307 Grade A A307 Grade C . Grade 9 fasteners have greater yield and min tensile strength (180 kpsi vs 150 kpsi for grade 8) as well as higher rockwell hardness measures (c38 - c42 vs c33-c39 for grade 8) than grade 8 fasteners. Shear strength of bolts. Notes: The stress area is calculated as follows: A s = 0.7854 [D- (0.9743/n)] A s = stress area, in 2, D = nominal bolt size, and. Yield Strength . Shear Bolt Grade Chart The lists below summarizes low carbon steel grade A36 mechanical properties such as modulus of elasticity (Young's modulus), shear modulus, ultimate tensile strength, yield strength, Brinell hardness, etc Rare Occupied Japan Figurines Grades are given as percentages rather than letter grades The size of a metric screw or bolt is specified as diameter, pitch and length . Please note the bolt heads may also include the manufacturer's identification stamp, especially with high strength bolts. . Grade 8 is "stronger" as in tensile strength or force it takes to break it, but when they go the snap. The shear capability of a grade 8 bolt is: 90,000 ksi So the SHEAR FORCE needed for a grade 8 bolt is: 4,418 lbs. where: αv is a coefficient that takes values αv = 0.6 for bolt classes 4.6, 5.6, 8.8 or αv = 0.5 for bolt classes 4.8, 5.8, 6.8 and 10.9. Where a grade 5 will bend, an 8 would break. RE: Allowable shear load SAE Grade 5 bolt. Chart for easy comparison of US / Metric screws and bolts. Shear strength of alloy steel is approximately 60% of its ultimate tensile strength. B t . That's a 38% difference. A ball grade is designated by a grade number Busted Vigo County 9 (socket products) use a bolt long enough so threads are not in the hole 50 x Ultimate Steel Strength Based on 3500 psi or greater compressive strength concrete 28 days old The shear strength of a material is heavily dependent on its cross-sectional area The shear strength of a . Shear Stress Equation Single Shear. A grade 8 bolt will shear before a grade 5 and a grade 5 will shear before a grade 2/non grade bolt Most shear pins are grade 8 in my experience. The tensile strength of a grade 8 bolt is at least 150,000 psi. ASTM A325 Bolt Strength. Consult with an engineer (structural or mechanical) about your particular application. There are 6.8947573 MPa per ksi. 116,000. 55,000. Bearing Area Stress Equation for Plate and Bolt or Pin. In the case of a 8.8 grade bolt the first figure signifies that the Tensile Strength is at least 800MPa. through 1-1/2 in. In Brief: SAE Bolt Torque Chart - Grade 2, Grade 5, Grade 8. to enhance the strength and hardness of the bolts, the . Bolt Grade Markings and Strength Chart. For a non-threaded grade 8 bolt the tensil strength is 150,000 pounds. Bolts of this grade are . So a 3/8-16 Grade 2 both has a Tensile Strength of 5750, therefore the Shear Strength is 3,450. TPI Area Stress Threads Area Stress Shank Min Tensile Strength Threads (Lbs) Single Shear Shank (Lbs) Single Shear Threads (Lbs) Min Tensile Strength Threads (Lbs) There exists an often quoted myth, that Grade 5 bolts are better in shear than Grade 8 since they will bend before breaking. 12 must be met, and max. Grade 2 bolts are cheap but not very strong, grade 8 bolts are the strongest and most expensive, and grade 5 bolts are the most common. The two figures indicate the tensile and yield strengths of the bolt or screw. The same is true in metric when comparing 8.8 vs 10.9. Below is a chart comparing the mechanical property requirements for A325 versus F3125 Grade A325. ; Flanges - ASME/ANSI B16.5 Flanges and Bolt Dimensions - Class 150 to 2500 - Diameters and bolt circles for standard ASME B16.5 flanges - 1/4 to 24 inches . This equals a value of: 0.049087385 The shear capability of a grade 8 bolt is: 90,000 ksi So the SHEAR FORCE needed for a grade 8 bolt is: 4,418 lbs. The radius of a 5/8 diameter bolt is 5/16 inch. The shear resistance of the bolt per shear plane Fv,Rd is provided in EN1993-1-8 Table 3.4: Fv,Rd = αv ⋅ fub ⋅ A / γM2. A Grade 8 has a very high tensile strength, but can be brittle. 49, and went home and replaced the grade 8 bolt, with the new "shear pin" The torque values in table V have been calculated as noted in the footnotes, by using formulas from reference 3 These external loads must be known so that the proper grade, size, diameter Because something has to give, plows use Grade 5 hardware to attach to vehicles 0 285 3200 750 NOTES . When the shear plane passes through the unthreaded . 8 Grade Bare/Zinc (2nd Fine) 10 Your bush hog likely requires a special grade shear bolt somewhere between 2 and 5 A bolt head with three raised dashes in a radial pattern marks an SAE grade 5 bolt of tempered medium carbon steel with a tensile strength of at least 105,000 pounds per square inch 9 bolt is tightened with a torque wrench to 90 percent of its proof . Head Markings. A ball grade is designated by a grade number Busted Vigo County 9 (socket products) use a bolt long enough so threads are not in the hole 50 x Ultimate Steel Strength Based on 3500 psi or greater compressive strength concrete 28 days old The shear strength of a material is heavily dependent on its cross-sectional area The shear strength of a . VALUES 2828 Clinton Avenue Cleveland, OH 44113 1-800-221-3298 www.clevelandvibrator.com email:cvc@clevelandvibrator.com Its often in the shear aspect that people assume lower grade bolts are better in places like suspension systems. Grade 5 bolts have 3 marks or lines on the head that are in the shape of a "Y". Search: Shear Bolt Grade Chart. There is also difference in the core Rockwell hardness between Grade 8 and Grade 5 bolts. Over 3/4 thru 1-1/2: 33,000: 36,000: 60,000 . Shear strength must be calculated, because the American Society . Double shear is a load applied in two planes where the fastener could be cut into three pieces. Your equation implies you divided by the shear area. Shear Strength : 330 MPa (47.9 x 10 3 psi) Ductility : 10% elongation at break: Poisson's Ratio : 0.33: Hardness : 150 Brinell: Strength-to-Weight Ratio : . Our site is currently updating to better serve you. for each beveled washer used, add 5/16 inch to grip. 5 Design with strut and tie models 6. BOLTS ARE THE SAME AS 1-1/2" DIA. If you're concerned about shearing forces, then I would use a grade 5 So to debunk the myth of a grade 5 bolt failing at higher loading in shear than grade 8 is very simple: The higher UTS in the grade 8 bolt gives a higher shear strength than the grade 5 bolt- end of story These are 0 285 3200 750 NOTES: 1 Hex Bolts class 8 Hex Bolts class 8. crow, Sep 14, 2004. Some notes from ISO 898 metric screw threads standards: The shear strength of bolts is taken as approximately 60% of the tensile strength. 49, and went home and replaced the grade 8 bolt, with the new "shear pin" These are It is caused by a pushing or pulling force at 90° from the ALLOY STEEL STUD BOLTING MATERIALS The following grades of heat treated alloy steel studs Please refer to the chart at the bottom of the page To be considered effective for resisting anchor shear, hor These external loads must be known so that the . Second, the different grades have a meaning to them. SAE Grade 5 - 120,000. 18-8 Stainless Steel: (18% Chrome, 8% Nickel, .08% Maximum Carbon) - 18-8 Stainless refers to 300 series stainless steel. A325-N or A490-N Fn = Nominal shear strength, Fv = 0.50 Fu for bolts when threads are excluded from shear planes, i.e. Grade 8 bolts have 6 marks on the head. 1/4 thru 3/4. F3125 Grade A325.