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Use Prevailing Torque All-Metal Nut chart if using this style of nut. = Nominal Diameter. = 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.
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.
FASTENER TORQUE CHARTS. Guide for Prevailing-Torque Lock Nut Assembly Torques. (Cad and Wax, Grade B, C, and Grade G flange nuts) lock nut standards from IFI-100 requirements Torque-Tension Requirements. Metric Torque Chart for Hex Head Cap Screws. Grade C. Grade B. Grade G.
Due to many variables that affect the torque-tension relationship like human error, surface texture, and lubrication the only way to determine the correct torque is through experimentation under actual joint and assembly conditions.
Standard Prevailing-Torque Metric Hex Nuts Size Data Table. The following describs the three basic designs for prevailing- torque type nuts: 1) All-metalic, one-piece construction nuts which derive their prevailing-torque characteristics from controlled distortion of the nut thread and/or body.
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 figures
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.
