Useful Bolt Charts (Recommended torque, Conversion charts, Head Bolt to bolt diameter, Lubricated torque)

Bolt head/Wrench size to bolt diameter conversion chart:

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Download (PDF, Unknown)

 

Standard recommended torque spec for each size bolt:

 

Conversion factor based on bolt condition (reduce by 30% for heavily greased [anti-seized] bolts):

 

Coefficient factor indicates bolt condition (k factor indicates dry, vs lubed, vs greased, etc), koken chart is based on k = .2 which is generally new and dry).

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Newton Meters (NM) to Foot pounds (Ftlb):

OEM BMW torque specs based on bolt size:

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Conversion chart from Metric to SAE and British:

 

Chart to identify different types of new world bolt heads:

 

Bolting handbook:

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