1 4 Bolt Torque Spec
Torque values chart for common bolt sizes.
1 4 bolt torque spec. Manufacturer s instruction documents should. Coarse fine coarse fine coarse fine coarse fine coarse fine coarse fine 4 5 2 4 8. These charts show suggested maximum torque values for threaded products and are intended only as a guide. Print this page.
Always refer to the manufacturers recommended torque values if possible. Recommended bolt torque table size recommended torque grade 2 grade 5 grade 8 18 8 s s bronze brass. Have the bus bars cleaned annually with clean dry. Torque values stainless steel bolt table chart.
Recommended bolt torque values for stainless steel and nonferrous fasteners inch series. Ansi hardware design guide design torque and force calculations. For longer fasteners the torque is reduced significantly. Sizes from 1 4 up are in ft lbs.
Reduce torque by 20 when cadmium plated bolts are used. 9 8 2006 11 12 23 am. Grade 2 grade 5 grade 8 18 8 s s bronze brass. Torque wrench calibration browse our selection torque wrench faqs.
Metric bolts maximum torque in foot pounds for clean dry threads check your shop manual. It is recommended that power. 18 8 stainless steel. Grade 2 5 and 8 values are for slightly lubricated bolts.
Tightening torque clamp load lbs tightening torque clamp load lbs tightening torque clamp load lbs tightening torque min max min max min max min max coarse thread series 1 4 20 2864 93 1 in lbs 144 in lbs 3357 100 7 in lbs 134 3 in lbs 2029 76 1 in lbs 96 4 in lbs 2864 107 4 in lbs 136 in lbs. Clamp loads are based on 75 of the minimum proof loads for each grade and size. Us recommended bolt torque. Grade 2 calculations only cover fasteners 1 4 3 4 in diameter up to 6 long.
Bolt size low grade grade 8 8 grade 10 9 grade 12 9. The following torque values are suggested maximums based upon actual lab testing on clean and dry or near dry fasteners. Use the torque specifications in table 2 1. Fine thread figures are for 1 14.
Sizes from 1 4 up are in lb ft. Grade 2 5 and 8 values are for plated bolts.