1 4 Bolt Torque Chart

Astm a449 is identical in chemical properties and is used in general engineering applications.

1 4 bolt torque chart. This type of bolt has medium strength bolt manufactured from a medium carbon or alloy. All other torque values are in. Grade 2 grade 5 grade 8 18 8 s s bronze brass. Clamp loads are based on 75 of the minimum proof loads for each grade and size.

Us recommended bolt torque. Inch bolt torque table estimated with clamp load as 75 of proof load as specified in sae j429 and asme 574 steel grade sae 5 sae 8 socket head cap screws minimum tensile strength psi 120 000 150 000 1 4 1 2 180 000 5 8 1 170 000 nominal dia. Sae grade 3 100 000 psi med carbon steel. 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.

Print this page. Grade 2 5 and 8 values are for slightly lubricated bolts. Find the bolt torque chart for the astm a449 and sae grade 5 sae j429 grade 5 bolts. Lubed means cleaned dry bolts lubricated with standard medium viscosity machine oil.

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. For longer fasteners the torque is reduced significantly. Torque values for 1 4 and 5 16 sizes are in inch lb. The values shown in the chart are to be used as a mid range guideline.

Grade 2 calculations only cover fasteners 1 4 3 4 in diameter up to 6 long. Coarse fine coarse fine coarse fine coarse fine coarse fine coarse fine 4 5 2 4 8. 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. Sizes from 1 4 up are in lb ft.

Sae grade 5 120 000 psi med. Ifi 100 does not govern lock nuts above 1. Lubricate all contact areas of the bolts and washers. And thread pitch bolt torque specs in newton meters nm dry lubed dry lubed dry lubed 1 4 20 11 4 8.

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