Metric Hex Head Bolt Torque Specs

Metric bolts screws nuts.

Metric hex head bolt torque specs.

Iso 724 metric threads dimensions of metric threads according iso 724. Torque specifications especially for critical joints should. Torque tolerance 0 15 of torquing values. 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.

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. Lubricated bolts and reduced torque lubrication effect on bolt tension and torque. 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. 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.

Lubricate all contact areas of the bolts and washers. 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. 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. Bolt torque calculator calculate required bolt torque.

Bolt clamp loads. Different bolt sizes and grades have different torque specifications. Unless otherwise specified use torque values listed above. Lubricating the bolts is the suggested method.

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. Multiply kn by 224 809 to convert nm to lbft. Fastener mart created date.