M8 Cap Head Bolt Torque

M8 1 25 36 60 32 80 44 65 35 50 24 01 39 8 27 8 m10 1 50 58 00 52 30 70 76 56 26 38 28 78 8 55 1.

M8 cap head bolt torque.

Proper torque spec varies depending on the material bolt grade or wether lubrication is used such as oil wax or anti seize always go to the manufacturer for proper torque specs if needed. Resulting maximum pre load for standard hex head bolts and socket head cap screws based on. In general the proper torque spec is usually around 65 70 of the failure torque rate. Tightening torque for class 4 6 bolts metric coarse bolt diameter x pitch thread stress area mm2 tightening torque nm pre load kn tightening torque nm pre load kn m5 x 0 8 14 2 1 9 2 74 2 59 2 4 m6 x 1 20 1 3 3 3 87 3 65 4 1 m8 x 1 25 36 6 8 7 1 6 7.

Supply part number. Of the bolt proof loads specified for sae j 429 grade 5 and astm a 449 bolts. A m30 12 9 fastener has a maximum tightening torque of 2 280 nm based on a friction coefficient of 0 125 zinc plated maximum torque. Lubricate all contact areas of the bolts and washers.

Improvised torque wrench improvised torque wrench with luggage scale. M8 x 1 25 pitch 8 8 25 0 23 0 18 75 17 25. Iso 724 metric threads dimensions of metric threads according iso 724. Torque tension reference guide printed in u s a.

The below chart refers to usage in steel. When so specified by the purchaser the edges of holes on the outside surface of the head will be chamfered 45 degrees to a depth of 0 30 to 0 50 mm. Fasteners bolts nuts and threaded rods torque tension and loads. Lubricated bolts and reduced torque lubrication effect on bolt tension and torque.

Steel grade sae 5 sae 8 socket head cap screws property class 8 8 10 9 12 9 socket head cap screw torque in pound foot or pound inch torque in newton meter nm lubed means cleaned dry bolts lubricated with standard medium viscosity machine oil. American national standard socket head cap screws metric series per. Tightening torque tensile yield shear strength socket head cap screw socket head cap screw recommended tightening torque class 12 9 size pitch stress area core area tensile strength. Bolt torque calculator calculate required bolt torque.

Lubricating the bolts is the suggested method.