William Tools Technical Support This 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 Converter Torque Measurements Converter Metal Weight Calculator Pressure Measurements Converter Length Measurements Converter Weight Measurements Converter Cubic Foot (ft3, cu ft) converter Standards Ratchet Handle Types ANSI and DIN Standard Dimension Test Load William Tools Standard STANDARD BOLT TIGHTENING TORQUE Standard Bolt Tightening Tension Mechanical Properties Of Fasteners Relation Formula Between Bolt and Tightening Torque