What Is The Torque Spec For 1 4 20 Bolt Torque Table The following suggested tightening torques provide an excellent starting point for determining torque requirements Remember you may need to vary these numbers somewhat based on the individual joint or the amount of fastener lubrication This table is offered as the suggested maximum torque values for threaded products and is
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 of the proof loads specified by the standard For A307 Grade A 75 of 36 000 PSI is utilized A193 B7 uses 75 of the yield strength Bolt Torque Chart showing suggested torque values and corresponding bolt clamping forces for various sizes and specifications of fasteners
What Is The Torque Spec For 1 4 20 Bolt
What Is The Torque Spec For 1 4 20 Bolt
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Each bolt grade has an ideal tightening torque for maximum clamping force without breaking 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 Refer to the charts to find the ideal tightening torque Recommended Bolt Torque Values for Stainless Steel and Nonferrous Fasteners inch series The following torque values are suggested maximums based upon actual lab testing on clean and dry or near dry fasteners
The above torque values may be used for all cadmium plated steel nuts of the fine or coarse thread series which have approximately equal number of threads and equal face bearing areas Estimated corresponding values When using anti seize reduce the lubed chart reading by 20 to properly torque Always lubricate and use lubed torque values The above recommended assembly torques are offered as a guide only
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Torque tolerance 0 15 of torquing values Unless otherwise specified use torque values listed above Bolt torque chart reference guides include Grade 2 B7 A307 A325 Grade 8 A490 and Grade 5 AFT Fasteners is your trusted source for fastener information
While Fastenal has used reliable sources and testing to determine these values there are many variables that will effect the results and the use of this information is at sole risk of the user Values through 7 16 quot diameter are stated in inch pounds 1 2 quot diameter and over are stated in 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 Clamp load calculated as 75 of the yield strength for the B7 specified in ASTM A193
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What Is The Torque Spec For 1 4 20 Bolt - When using anti seize reduce the lubed chart reading by 20 to properly torque Always lubricate and use lubed torque values The above recommended assembly torques are offered as a guide only