Below are some handy guides, charts and information to
help you find the fastener that best suits your requirements.
Tapping Drill Sizes
Tables for the range of drill sizes that can be used for tapping metric, UNC, UNF, BSW Whitworth and BSF threads.
Tightening Torque Data
Tightening torques and pre-loads for metric coarse, UNC and UNF bolts.