Bolt Dia (mm) Dry Lubricated. applications where greater control is desired this should be experimentally document.write('
Because of the many interrelated variables that directly or indirectly The The Fabrication Tightening Torques for Stainless Steel Bolts Minimum breaking torque (M b,min) for austenitic stainless steel bolts and screws between M 1.6 and M 16 (course threads) are shown in table 4 of EN ISO 3506-1:1997. and K=0.15 for plated fasteners. Tightening Torque Guide for Grade 5 & 8 Hex Cap Screws This table is based on IFI 5th Edition Technical Data N-12/N-16, using Equation (1) and a torque coefficient, K=0.20 for non plated steel fasteners and K=0.15 for plated fasteners. lbs.). Remember, you may need to vary these numbers somewhat based on the individual joint or the amount of fastener lubrication. Torque The torque values can only be achieved if nut (or tapped hole) has a proof load greater than or equal to the bolt's minimum ultimate tensile strength.
(ft. This shows torque values in Nm for properties classes 50, 70 and 80 as shown in the table below. Engineering Forum Recommended Bolt Torque Values for Stainless Steel and Nonferrous Fasteners (inch series). } Engineering Book Store Related Topics . m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
Engineering News This shows torque values in Nm for properties classes 50, 70 and 80 as shown in the table below. Equation (1) and a torque coefficient, K=0.20 for non plated steel fasteners Advertising Engineering Videos Engineering Toolbox ga('create', 'UA-6310447-1', 'auto'); Remember, you may need to vary these numbers somewhat based on the individual joint or the amount of fastener lubrication. lbs. © Copyright 2000 - 2020, by Engineers Edge, LLC www.engineersedge.com All rights reserved
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lbs.) The following torque values are suggested maximums based upon actual lab testing on clean and dry or near dry fasteners. The following suggested tightening torques provide an excellent starting point for determining torque requirements. Maximum Recommended Tightening Torques ). else document.write('
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the use of a torque wrench. Excel App. Torque Values for A2 or A4 Metric Stainless Steel Fasteners. ga('send', 'pageview'); © Copyright 2000 - 2020, by Engineers Edge, LLC www.engineersedge.com All rights reserved
Torque Tightening Values for Structural Steel Bolts Below is a list of the recommended tightening torques for 12.9 / 10.9 / 8.8 zinc plated finish bolts. Engineering Calculators Conversion Calculator. Torque values are not given for martensitic stainless steel (C1, C3, C4) or ferritic stainless steel (F1) grades. affect friction, such as surface texture, type or coating or finish, 14 118 106 87 78 16 180 162 133 119 18 258 232 190 171 20 370 333 273 246 22 485 437 358 322 24 603 543 445 400. This web page table has been corrected. (ft. , GD&T Training Geometric Dimensioning Tolerancing. lubrication, speed of tightening, human error, etc., it is possible to DFM DFA Training not not This table is based on IFI 5th Edition Technical Data N-12/N-16, using Tightening torque values are not given in this standard. Torque values calculated from formula T=KDF, where Lubricated Clamp Load F based on 75% of Yield Dry Clamp Load F based on 40% of Yield to avoid Galling. document.write(' '); Minimum breaking torque (M b,min) for austenitic grade bolts and screws between M 1.6 and M 16 (course threads) are shown in table 4 of BSENISO 3506-1:1997.