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.
ASTM A307 utilized 75% of 36,000 PSI. Torque values for 1/4 and 5/16-in series are in inch-pounds. All other torque values are in foot-pounds. = 0.17 for zinc plated and dry conditions; we have also found various forms of customer applied thread lockers to have a similar K value.
Torque Calculator - Fastenal
Look up the optimal torque for various combinations of bolt diameter, thread type, and grade or class. By using this Torque Calculator, you agree to the following terms and conditions: The following torque values are advisory only, and its Show more...use by anyone is voluntary.
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. UN8 Thread Series
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 proof load when specified by the standard.
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. Coatings such as Teflon or Xylan offer extremely low coefficients of friction.
Torque-Tension Reference Guide | PDF | Screw | Machines - Scribd
4) Torque values for F835 Countersunk and Button Head, Alloy Steel Socket Shoulder and. 10.9, and 12.9 externally thread fasteners and Prevailing Torque All-Metal Nut chart, the rigid joints …
Suggested Maximum Torquing Values - a guide based upon actual lab testing on dry or near dry fasteners wiped clean. 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.
Bolt Torque Chart
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.
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 torque-tension relationship.
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