1 4 Bolt Torque Spec

For longer fasteners the torque is reduced significantly.

1 4 bolt torque spec. Always refer to the manufacturers recommended torque values if possible. Reduce torque by 20 when cadmium plated bolts are used. Coarse fine coarse fine coarse fine coarse fine coarse fine coarse fine 4 5 2 4 8. Grade 2 calculations only cover fasteners 1 4 3 4 in diameter up to 6 long.

Torque values stainless steel bolt table chart. Fine thread figures are for 1 14. Us recommended bolt torque. Secondary sources such as transformers tie lines ensure that.

Recommended bolt torque table size recommended torque grade 2 grade 5 grade 8 18 8 s s bronze brass. Torque wrench calibration browse our selection torque wrench faqs. Have the bus bars cleaned annually with clean dry. 9 8 2006 11 12 23 am.

These charts show suggested maximum torque values for threaded products and are intended only as a guide. Grade 2 5 and 8 values are for plated bolts. Fine thread figures are for 1 14. Grade 2 grade 5 grade 8 18 8 s s bronze brass.

Metric bolts maximum torque in foot pounds for clean dry threads check your shop manual. Recommended bolt torque values for stainless steel and nonferrous fasteners inch series. In tpi1n m2ft lb3n m ft lb n m ft lb mm x pitch4n m ft lb n m ft lb n m ft lb 1 4 20 7 4 5 6 11 8 16 12 8 436597. Use the torque specifications in table 2 1.

18 8 stainless steel. Manufacturer s instruction documents should. Grade 2 5 and 8 values are for slightly lubricated bolts. Clamp loads are based on 75 of the minimum proof loads for each grade and size.

Print this page. 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. Torque values chart for common bolt sizes. Sizes from 1 4 up are in ft lbs.

Bolt size low grade grade 8 8 grade 10 9 grade 12 9. It is recommended that power.