Search results
Results from the WOW.Com Content Network
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.
Title: Metric Bolts, Screws & Nuts: Tightening Torques Author: Fastener Mart Created Date: 8/12/2006 10:22:23 PM
Metric Bolt Torque Chart. In the following table of torque specifications, you will find all the necessary torque values in Newton-meters (Nm) for common screw thread sizes and strength classes. Please note that the required torque may vary due to differences in screw strength classes and thread sizes.
Torque-Tension Relationship for Metric Fasteners. 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 loads estimated as 75% of proof load for specified bolts. Torque values listed in foot-pounds .
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.
torque for metric fasteners 70% of minimum yield strength metric pv ma pv ma pv ma threads a/f n nm n nm n nm m2 4 863 0.290 1216 0.404 1461 0.488 m2,3 4,5 1245 0465 1755 0656 2099 0.785 m2,6 5 1598 0.671 2246 0.938 2697 1.128
Torque Values for A2 or A4 Metric Stainless Steel Fasteners. Suggested Maximum Torquing Values - a guide based upon actual lab testing on dry or near dry fasteners wiped clean. The lubricated values were calculated at 90% of the dry condition test results.