Metric Hex Head Bolt Torque Specs

Lubricate all contact areas of the bolts and washers.

Metric hex head bolt torque specs.

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. 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. Metric bolts screws nuts. Lubricated bolts and reduced torque lubrication effect on bolt tension and torque.

Fastener mart created date. Bolt torque calculator calculate required bolt torque. Different bolt sizes and grades have different torque specifications. Multiply kn by 224 809 to convert nm to lbft.

Fasteners bolts nuts and threaded rods torque tension and loads. Torque specifications especially for critical joints should. Torque tolerance 0 15 of torquing values. 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.

Iso 724 metric threads dimensions of metric threads according iso 724. Bolt clamp loads. Improvised torque wrench improvised torque wrench with luggage scale. Lubricating the bolts is the suggested method.

Consult your shop manual for the most precise listings. 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. Unless otherwise specified use torque values listed above.