sae and metric bolt torque chart Use Prevailing Torque All Metal Nut chart if using this style of nut Clamp Load For J429 Grade 5 and 8 FNL Grade 9 A574 Class 4 6 8 8 10 9 and 12 9 the clamp loads are listed at 75
SAE and Metric Fastener Torque Specifications iii BLACK OXIDE BOLTS SHC Grade 8 hex head ASTM A574 ANSI B18 3 DRY LUBED DRY LUBED SIZE THREAD TORQUE 19 rowsThe following suggested tightening torques provide an excellent starting point for
sae and metric bolt torque chart
sae and metric bolt torque chart
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Use SAE 2 5 or 8 values when grade is known with a nut of sufficient strength There is no difference in the above chart between the torque figures for fine or coarse threads The torque Torque specifications especially for critical joints should be determined under actual assembly conditions due to the many variables involved which are difficult to predict and do affect the
The torque value to use in an application is best obtained by using a calibrated torque wrench or transducer and a Skidmore Wilhelm type load indicating device to equate actual torque to Torque Tension Requirements Clamp Loads for the Grade B lock nuts equal 75 of the bolt proof loads specified for SAE J 429 Grade 5 and ASTM A 449 bolts Clamp Loads for Grade
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Stainless Steel and Non Ferrous are suggested maximum torque values based on actual lab testing Stainless steel fasteners tend to gall while being tightened The charts below show the ideal tightening torque for each bolt grade for a variety of sizes The size column also includes the thread count Identify the grade size and thread density of your
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 Torque values calculated from formula Calculate required bolt torque The relation between applied torque and axial force or load in a bolt can be calculated in this general equation as T K F d 1 l 100 1 where
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sae and metric bolt torque chart - Torque specifications especially for critical joints should be determined under actual assembly conditions due to the many variables involved which are difficult to predict and do affect the