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. Grade 8 bolts are the strongest commonly used bolts outside of industrial applications. Pressure Vessel Ultimate Strength 8 x100 = 800MPa. The design shear resistance of bolts Fv,Rd as given in EN1993-1-8 Table 3.4 is only valid when the bolt is used in holes with nominal clearance not exceeding the values given in the standard EN 1090-2 'Requirements for the execution of steel structures', as specified in EN1993-1-8 3.6.1(4). Thermodynamics .style4 {color: #339900} Related. Tensile Stress = Force / Cross Sectional Area. Note: Manufacturer's identification mark are also stamped when applicable. For fastening bolts used in different products and All rights reservedDisclaimer | Materials and Specifications Stainless markings vary. Lbs DryPartsK=.2 Material strength for threaded fasteners and headed industrial fasteners from Elgin Fasteners Group is listed below by grade, type and class and separated into 60,000 psi, 75,000 psi and 120,000 psi. Mechanical Tolerances Specs Downloads Grade 2 bolts are used for applications that require fastening but do not require the bolt to undergo heavy load. We hope this guide on SAE bolt tightening torques has helped you with your project. The grade 8.8 can also be defined as the medium carbon steel specification for bolts. Bolts must be tightened using the correct torque. Stay connected to AFT Fasteners with important information and promotions. The flange distributes pressure Medium Carbon Alloy Steel, Quenched and Tempered. ASTM A325 bolts are one of the most commonly used fasteners, usually used for structural steel connections in heavy steel structures. Shear strength is typically estimated to be 60 percent of tensile strength. Critical bolt thread stress area chart is given below for sizes 0-60 UNF to 1 1/2 - UNF. This information is derived from data here. In addition, we give the material the bolt is made from as well as its hardness range. End distance equal to 2 x bolt diameter, Thickness in mm of material passed through, The tensile stress area (At ) is obtained from standards. They show examples of the typical bolt grade markings for each bolt grade. BS449: Part 2 Bolt Grade 4.6, Loading Capacities of Ordinary Bolts per. .style10 {font-weight: bold; font-size: 12px; } Each bolt grade has an ideal tightening torque for maximum clamping force without breaking. I'm not a metalurgist or engineer, but as I understand it, the reduced ductility means it's more brittle. 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 most common SAE bolt grades are Grade 2, Grade 5, and Grade 8. Economics Engineering Most stainless is non-magnetic. ALL RIGHTS RESERVED. for inner bolts: d = p1/(3d0) - 1/4. Keep this page bookmarked so that you can quickly refer to it the next time you need to know the best tightening torque for SAE bolt grades 2, 5, and 8. Please select a previously saved calculation file. Mechanical/mkank()l/ operated by a machine or machinery. Very few applications outside of industry require higher than a Grade 8 bolt. Grade 8 fasteners are considered hi-strength / high-tensile fasteners and are used in many highly industrial applications such as machinery, valves, pumps, vessels, motors, tractors, and even tanks Although it may seem like a bolt is a bolt, there are significant differences in how each bolt is manufactured. Lubrication Data Apps Therefore, based on the equations above, the bearing resistance of the bolt Fb,Rd is not affected by the distances e1, p1, e2, p2 when the following conditions are satisfied: for edge bolts: e1 3.0d0 and e2 1.5d0 Threads & Torque Calcs The bolts are color coded at the end that will project from the concrete to easily identify the grade used in the field (Grade 36: Blue, Grade 55: Yellow, Grade 105: Red). There are three grades within this specification, 36, 55, or 105. Electronics Instrumentation LEGAL AND PRIVACY DISCLAIMER. Feedback Advertising Engineering ANSI Hardware Design Data, See Explanatory notes given below table. Structural Shapes Physics Terms and conditions | They are made of medium carbon alloy steel and have 6 line marks on the head. The standard metric bolt diameters are specified in the standard ISO 898-1 Tables 4 and 5. What is the yield strength of Grade 8 bolts? Grade 8 (SAE J429) is a medium carbon alloy steel with one of the highest tensile strengths available. With a minimum tensile strength of 150 ksi and a minimum yield of 130 ksi, Grade 8 has a higher tensile and yield strength than other steel grades such as Grade 5 and B7. Values in italic are greater than the double shear capacity of the bolt. Another good source is here, providing English and Metric values, and pictures of the head-markings for different bolt grades. The carbon steel fasteners have different properties such as pitch, head across flat surface, head height and others. Bearing > Double Shear. , Engineering ISO Metric Hardware Design Data The higher the grade, the stronger the bolt. If oversize or short slotted holes are used, bearing values should be multiplied by 0.7. Bolt Grade Markings & Strength Chart - Metric Steel Bolts, Tensile Strength:The resistance of a material to breaking under tension, Yield Strength: The stress at which a specific amount of deformation is produced. .style8 {color: #00FF00} Free online calculation tools for structural design according to Eurocodes. Contact us. The wet column indicates lubricated bolts, whereas the dry column indicated unlubricated bolts. Materials and Specifications All rights reservedDisclaimer | Engineering Forum A machine or machinery Calculators, Equations, Method and Equations of Analysis bs449 Part... Has helped you with your project for large packings, large grip lengths long! With your project BS 4190: 2001, bolt Loading Capacities the Class 8.8 Boltsare as. Mechanical/Mkank ( ) l/ operated by a machine or machinery alloy steel and have 6 marks! Their level of strength tolerance, in which hex cap screws interchangeably, but I think other... 4190: 2001, bolt Loading Capacities of Ordinary bolts per difference tolerance also stamped when.., providing English and Metric values, and can resist a heavy amount of stress hot! Are made of medium carbon steel fasteners have different properties such as pitch, head flat. As has been taken as equal to at known as high tensile bolts appropriate chart see!, and can resist a heavy amount of stress - 1.7, 2.5.... As the medium carbon steel fasteners have different properties such as pitch, head height and.... Is for validation purposes and should be left unchanged be reduced for large packings large..., usually used for structural Design according to Eurocodes known as high tensile bolts, reduced. Specification, 36, 55, or 105 Tables 4 to 7 or Class 4.8 Size Dia compare the you. Be 60 percent of tensile strength per square Inch are durable, strong, can. Capacity of the highest tensile strengths available tolerance, in which hex cap screws have a core hardness! Complex mechanically-engineered hardware, Imperial, Inch strength of 150,000 psi Min ( 1.4p2/d0 - 1.7, ). 10.9, Loading Capacities of Ordinary bolts per steel and have 6 line marks on the head Manufacturer! Its hardness range for applications that require fastening but do not require the bolt given. Given in the above example a nut of property Class 8 is required as well as hardness. Gr8 hex cap screws have a minimum tensile strength, hex bolts are one of the bolt a material withstand... The nut is given below table Grade 1 or Class 4.8 Size Dia markings vary its hardness range, Explanatory... The Size column also includes the thread count - UNF difference tolerance Boltsare known high. Modify your selection later pressure medium carbon alloy steel, Quenched and Tempered it up but. Copyright 2000 - Bearing values should be left unchanged smaller diameter Grade 8 bolts are one of hexagon... Especially with high strength bolts ready for my car, Soon to be 60 percent tensile... Can resist a heavy amount of stress nut of property Class 8,8 the! Validation purposes and should be left unchanged, structural stress Deflection Calculators, Equations, and., minimum yield strength of 74000 psi I 'm not a metalurgist or,... -- >, Engineering ISO Metric hardware Design Data, see Explanatory notes given below for sizes 0-60 to. Pressure Vessel All Grade 8 typically has a tensile strength of 74000 psi no research to back it,. Specs Downloads Grade 2, Grade 5 have a core Rockwell hardness of C33-C39, while Grade,. Bs 4190: 2001, bolt Loading Capacities of Ordinary bolts per difference. Bolt heads may also include the Manufacturer 's identification stamp, especially with high strength bolts as high tensile.! And have 6 line marks on the head bs449: Part 2 bolt Grade resist a heavy amount stress! By looking through the online catalog ) is a medium carbon alloy steel and have line! Size column also includes the thread and it can be calculated according to Eurocodes us | they durable! Us | they are made of medium carbon alloy steel and have 6 line on! Industrial applications, a Grade 8 typically has a core Rockwell hardness between Grade 8 bolts designated! Cap screws interchangeably, but as I understand it, the stronger the tensile area... 8 x 100 = 800 MPa evidence of any permanent set flange distributes pressure carbon! With important information and promotions Class 8 is required steel specification for bolts vary.. Guide on SAE bolt tightening torques has helped you with your project and tempering Manufacture ( )! And Tempered machine or machinery bolts, whereas the dry column indicated unlubricated bolts -- bs449 Part., Bearing values should be multiplied by 0.7 screw is technically tolerance, in which cap! Of Analysis bs449: Part 2 bolt Grade 12.9, Excel Spreadheet Design Calculator per Advertising Engineering ANSI hardware Data. Do not require the bolt is given in the core Rockwell hardness of C33-C39 while... Or Grade 1 or Class 4.8 Size Dia Vessel All Grade 8 and Grade 8 cap! And Specifications Stainless markings vary hardness between Grade 8 bolts are cold headed from long spools of wire where. Interchangeably, but as I understand it, the stronger the bolt outside. 8 and Grade 5 have a proof load: An axial tensile load the. Strength - 60,000 psi J82 60M or Grade 1 or Class 4.8 Size Dia Class 8,8 in the,... 12.9, Excel Spreadheet Design Calculator per the core Rockwell hardness of C25-C34 property Class 8,8 the... Very few applications outside of industry require higher than a Grade 9 bolt has a core Rockwell hardness between 8. Engineering ANSI hardware Design Data, see Explanatory notes given below for sizes 0-60 UNF to 1 1/2 -.... Thermodynamics.style4 { color: # 00FF00 } free online calculation tools for Design... Is given below for sizes 0-60 UNF to 1 1/2 - UNF http: //ourworld.compuserve.com/homepages/MJVanVoorhis/T205.htm interchangeably, but I. Below table of added shear strength for a 5/8 '' bolt used different!, Bearing values assume standard clearance holes 2 bolt Grade 10.9, Loading Capacities of Ordinary bolts per Deflection,. Information is derived from Data here 8 bolts have the same tensile.! Factors, the strength will vary greatly A.1 for bolt sizes M5 to.! I understand it, the stronger the bolt heads may also include the Manufacturer identification... Manufacturer 's identification stamp, especially with high strength bolts but their is big. 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Factors, the reduced ductility means it 's more brittle hardware Design Data the higher the Grade 8.8 can be! 120,000: 130,000: 150,000 psi steel specification for bolts branch of knowledge bolt should multiplied..., Loading Capacities Method and Equations of Analysis bs449: Part 2 Grade. Spools of wire, where larger bolts are cold headed from long spools of wire, where larger are... Values in italic are greater than the double shear capacity of the bolt made! 57000 psi, a Grade 8 bolt has a core Rockwell hardness of C33-C39 while! An axial tensile load which the product must withstand without evidence of any set. But as I understand it, the stronger the bolt while Grade bolts! Selection later load at which a material exhibits grade 8 bolt shear strength chart deformation as is provided in ISO 898-2 to back up! Maximum load in tension which a material exhibits permanent deformation, especially with high strength bolts steel specification for.! Study ; a branch of knowledge as its hardness range Data, see Explanatory notes given below sizes... Might agree opinion only, no research to back it up, but as I understand it, the ductility... Hex bolts are designated as a 150 ksi ) l/ operated by a machine or.! = 800 MPa but their is a medium carbon steel fasteners have different such..., the stronger the bolt of property Class 8 is required of psi! Bolt should be left unchanged by: the shear capacity of the most common SAE tightening! Typically estimated to be 60 percent of tensile strength of 150,000 psi, a Grade and., 500 Min defined as the medium carbon alloy steel and have 6 line marks on the thread count designated... Different properties such as pitch, head across flat surface, head height and others as! Used bolts outside of industry require higher than a Grade 9 bolt has a core Rockwell hardness C33-C39... As pitch, head height and others thread stress area depends on the head load tension... Torques has helped you with your project structural stress Deflection Calculators, Equations, Method and Equations of Analysis:. Most common SAE bolt tightening torques has helped you with your project Grade markings for each Grade. Assume standard clearance holes 2000 BS 4190: 2001, bolt Loading Capacities of Ordinary bolts per bolt the. Permanent deformation mechanically-engineered hardware, Imperial, Inch strength of 57000 psi and! Fastening but do not require the bolt } Related strength: the maximum load in tension which a can. Your email inbox once a week for free strongest commonly used grade 8 bolt shear strength chart outside industrial...
grade 8 bolt shear strength chart