William Tools Technical SupportThis technical support section provides you a variety of technical comparisons and diagrams for our ratchet handles and torque products.Please find the appropriate link below for your technical checkup.Measurements ConverterTorque Measurements Converter Metal Weight Calculator Pressure Measurements ConverterLength Measurements Converter Weight Measurements Converter Cubic Foot (ft3, cu ft) converterStandardsRatchet Handle Types ANSI and DIN Standard Dimension Test Load William Tools StandardSTANDARD BOLT TIGHTENING TORQUE Standard Bolt Tightening Tension Mechanical Properties Of Fasteners Relation Formula Between Bolt and Tightening Torque