3 8 Grade 8 Bolt Torque Specs

Sae grade 7 133 000 psi. Lubricate all contact areas of the bolts and washers. The given below astm a354 bd sae grade 8 bolt torque chart provides you with torque of various corresponding bolt sizes along with its tpi clamp load and proof load.

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Sae j429 grade 8 bolts are made of medium carbon alloy steel.

3 8 grade 8 bolt torque specs.

Torque has been converted into ft lbs by dividing the result of the formula by 12. Sae j429 grade 8 bolts do not exceed 1 5 inches diameter. Sae grade 3 100 000 psi med carbon steel. In lbs lbs lbs lbs.

Under over tightening of fasteners can result in costly equipment failure or personal injury. All calculations are for coarse thread series unc. Grade 2 calculations only cover fasteners. Sae grade 5 120 000 psi med.

Leaf spring u bolts are available from grade 5 u bolts to grade 8 u bolts. Rev 3 6 09 torque tension relationship for a307a grade 5 8 9 bolts in sq. 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. Sae 0 1 2 74 000 psi low carbon steel.

Sae j429 grade 8 bolts do not exceed 1 1 2 diameter. Leaf spring u bolt kits for heavy trucks medium and light duty trucks and auto applications. Extreme caution should be used when using a formula for torque tension relationships. Re use of original used spring u bolts is not recommended due to fatigue and stretching when u bolt was originally torqued.

Coarse fine coarse fine coarse fine coarse fine coarse fine coarse fine 4 5 2 4 8 4 3. Grade 2 grade 5 grade 8 18 8 s s bronze brass. Sae grade 5 120 000 psi med. Sae grade 6 133 000 psi med.

We supply round u bolts square u bolts and semi round u bolt kits complete. Torque is only an indirect indication of tension. A354 grade bd bolts are stronger than a354 grade bc. Sae 0 1 2 74 000 psi low carbon steel.

And plain non plated bolts as received 20. 1 3 8 12 72967 1003 1254 1421 1672 118324 1627 2034 2305 2712 138686 1907 2384 2701 3278 1 1 2 12 87747 1316 1645 1865 2194 142292 2134 2668 3024 3557 166778 2502 3127 3544 4169 torque tension relationship for a307a grade 5 8 9 bolts. 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. Sae grade 3 100 000 psi med carbon steel.