Metric Hex Head Bolt Torque Specs

Improvised torque wrench improvised torque wrench with luggage scale.

Metric hex head bolt torque specs.

Unless otherwise specified use torque values listed above. Metric torque chart for hex head cap screws torque chart for stainless steel cap screws size 316 i n c h 18 8 i n c h 10 1 9 6. Lubricate all contact areas of the bolts and washers. Torque specifications especially for critical joints should.

5 8 8 8 10 9 class 5 8 class 8 8 class bolt head identification bolt size grade 2 grade 5 grade 8 metric bolt head identification bolt size inches. Fasteners bolts nuts and threaded rods torque tension and loads. Bolt torque calculator calculate required bolt torque. Multiply nm by 0 737562 0 73 0 44 1 29 1 00 2 08 2 1 2 94 3 5 5 34 8 5 8 45 17 12 4 30 16 8 47 22 9 73 28 1 101 35 8.

Service manual supplement july 2016 fastener torque specifications 4 sae and metric fastener torque specifications sae plain and zinc plated hex and socket head cap. Torque tolerance 0 15 of torquing values. Consult your shop manual for the most precise listings. Bolt clamp loads.

For example 6 mm bolts with a 10 9 grade have a maximum torque value of 10 foot pounds while the same size bolts with a 12 9 grade have a maximum torque value of 12 foot pounds. 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. Class 4 6 iso metric coarse pitch bolts screws bolt tension recommended corresponding to assembly 65 of proof load torque kn nm 0 19 0 06 0 31 0 12 0 50 0 25 to convert kn to lbf. Iso 724 metric threads dimensions of metric threads according iso 724.

Different bolt sizes and grades have different torque specifications. Multiply kn by 224 809 to convert nm to lbft. Lubricated bolts and reduced torque lubrication effect on bolt tension and torque.