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CHARTS & INFO

 

 

 

DECIMAL EQUIVALENT CHART

 

 

Rockwell Hardness Tester

The Rockwell Hardness Tester is used by most manufacturers as a quality control device. This tester indicates true quality by using a series of weight and levers built in that prevents human error in applying forces. Tests such s those using torque devices operated by a person allow for the operator’s lack of accuracy and, therefore, do not necessarily indicate true values of qualities. Any test for quality based on this should be considered on the basis of its inherent tendency for human error.

Screw Dimensions

Length Of Thread On All Standard Cap Screws Is
2 Times The Diameter Of The Cap Screw Plus 1/4”

* Old Standards Across Flats Automotive Finished Nuts Only