7 8 Bolt Torque

Bolt size tpi tension tightening torque range ft lbs min max min max galv waxed plain.

7 8 bolt torque.

Lbs grade 8 5 8 18 3 4 16 7 8 14 1 14 11 8 14 11 4 14 170 300 480 740 1300 1780 1 4 3 2. Grade 2 5 and 8 values are for slightly lubricated bolts. These charts show suggested maximum torque values for threaded products and are intended only as a guide. These estimated torque values are derived from the standard torque formula torque kdf utilizing a standard free spinning nut non locknut with a proof strength equal to or greater than the tensile strength of the bolt.

Fine thread figures are for 1 14. 7 8 9 cap screws hex bolts. Sizes from 1 4 up are in ft lbs. Lbs grade 5 3 8 24 7 16 20 1 2 20 9 16 18 5 8 18 3 4 16 7 8 14 30 45 65 90 120 215 345 size diameter x thread torque ft.

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. There are several grades under astm a193 namely b7 b8 class 1 b8m class 1 b8 class 2 b8m class 2. The screw head is designed to fit a ratchet or spanner torque wrenches allowing you to tighten the screw to your exact specifications. Tightening torque guide for grade 5 8 hex cap screws this table is based on ifi 5th edition technical data n 12 n 16 using equation 1 and a torque coefficient k 0 20 for non plated steel fasteners and k 0 15 for plated fasteners.

Grade 2 grade 5 grade 8 18 8 s s bronze brass. Print this page. These figures represent an estimate of torque torque being the measurement of friction not tension required to induce given preload clamp load in a bolt. Hex head cap screws are typically used to create a bolted joint in which a threaded.

Here is the bolt torque chart for the astm a193 b7 grade bolts. Us recommended bolt torque. Astm a307 utilized 75 of 36 000 psi. Shop for us hex bolts.

Clamp load calculated as 75 of the proof load when specified by the standard. The hex head cap screw is a common fastener in construction and machine assembly. Torque u bolts evenly dayton s full line of u bolt kit features size diameter x thread torque ft. Always refer to the manufacturers recommended torque values if possible.

7 8 14. Torque values for 1 4 and 5 16 in series are in inch pounds. Coarse fine coarse fine coarse. Fine thread figures are for 1 14.

Cdi torque products is not responsible for any application of torque or it s consequences as a result of using this chart.