1 4 Bolt Torque Chart

The values shown in the chart are to be used as a mid range guideline.

1 4 bolt torque chart. Grade 2 5 and 8 values are for slightly lubricated bolts. Sae 0 1 2 74 000 psi low carbon steel. Sae grade 3 100 000 psi med carbon steel. For longer fasteners the torque is reduced significantly.

Lubed means cleaned dry bolts lubricated with standard medium viscosity machine oil. Grade 2 calculations only cover fasteners 1 4 3 4 in diameter up to 6 long. 23 section 6 appendix 12 21 01 rcr15 series rotary cutters 312 556m land pride section 6 appendix torque values chart for common bolt sizes in tpi1 n m2 ft lb3 n m ft lb n m ft lb mm x pitch4 n m ft lb n m ft lb n m ft lb 1 4 20 7 4 5 6 11 8 16 12 8 436597. And thread pitch bolt torque specs in newton meters nm dry lubed dry lubed dry lubed 1 4 20 11 4 8.

Print this page. This type of bolt has medium strength bolt manufactured from a medium carbon or alloy. 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. Grade 2 grade 5 grade 8 18 8 s s bronze brass.

Nom dia pitch nom size x pitch inch bolt torque table sae j429 and asme 574 metric bolt torque table iso 898 1 4 20 101 76 143 107 168 120. Sae grade 5 120 000 psi med. Find the bolt torque chart for the astm a449 and sae grade 5 sae j429 grade 5 bolts. Torque values for 1 4 and 5 16 sizes are in inch lb.

Clamp loads for grade c lock nuts equal 75 of the bolt proof loads specified for sae j 429 grade 8 and astm a 354 grade bd bolts. Coarse fine coarse fine coarse fine coarse fine coarse fine coarse fine 4 5 2 4 8. Us recommended bolt torque. Lubricate all contact areas of the bolts and washers.

4 316 ss or f593 g h course thread bolt size pitch lubricated with anti seize in lbs nm in lbs nm 1 4 20 59 7 40 5 ft lbs nm ft lbs nm 5 16 18 11 15 7 9. Sizes from 1 4 up are in lb ft. Astm a449 is identical in chemical properties and is used in general engineering applications. Ifi 100 does not govern lock nuts above 1.

Astm a449 covers headed bolts ranging from 1 4 inch to 3 inches in diameter. Fine thread figures are for 1 14. Lubricating the bolts is the suggested method.