Tightening torque hex bolts unc hex bolt properties unc recommended tightening torque.
3 8 bolt torque nm.
By failure the bolt is lubricated and tightened with the same torque 2022 nm.
The torque required to achieve this force with a dry bolt is calculated to 2022 nm.
Image source fluid power technology the torque value is dependent on the friction between the threads of stud bolt and nut head this friction can be affected by the application of a lubricant or any plating e g.
Lubricated bolts and reduced torque lubrication effect on bolt tension and torque.
3 sockethead coarse thread bolt size pitch lubricated with anti seize in lbs nm in lbs nm 1 4 20 150 17 100 11 ft lbs nm ft lbs nm 5 16 18 26 35 18 24.
The torque values represented here are intended to be for general information only not for specific installations.
F lubricated 2022 nm 0 2 0 03 m 1 40 100 561667 n.
70 ft lbs 94 9 nm torque notes.
464 kits found for sae bolt kits arp stainless 5 packs all sizes.
And thread pitch bolt torque specs in newton meters nm dry lubed dry lubed dry lubed 1 4 20 11 4 8.
Recommended tightening torque recommended tightening torque grade 5 grade 8 mm nm lbft nm lbft 1 4ʺ 20 9 5 7 14 0 10 5 16ʺ 18 20 0 15 28 5 21 3 8ʺ 16 36 0 27 51 5 38 7 16ʺ 14 59 0 43 81 0 60 1 2ʺ 13 90 0 66 125 0 92 9 16ʺ 12 129 0 95 180 0 133 5.
On specific installations where the supplied instructions deviate from the torque.
The force acting in the lubricated bolt can be calculated as.
Iso 724 metric threads dimensions of metric threads according iso 724.
Improvised torque wrench improvised torque wrench with luggage scale.
Bolt torque calculator calculate required bolt torque.
Fasteners bolts nuts and threaded rods torque tension and loads.
Coarse fine coarse fine coarse fine coarse fine coarse fine coarse fine 4 5 2 4 8 4 3.
Bolt size tpi tension tightening torque range ft lbs min max min max galv waxed plain.
Grade 2 grade 5 grade 8 18 8 s s bronze brass.
70 ft lbs 94 9 nm 3 8 16.
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.