BSW Intermediate Tap Set

• 1/8 - 1/2" BSW Intermediate Tap Set.

About BSW British Standard Whitworth

• The angle of thread is 55 degrees as opposed to 60 degrees in Metric and Unified threads.
• This thread form was developed by Sir Joseph Whitworth in 1841.
• The thread form has rounded roots and crests and is specified in BS84:1956.

About Intermediate Tap

• Have a lead of four threads and are used in most general purpose applications to cut a thread true to a pre-drilled pilot hole.
• Manufactured from HSS this general purpose tap is designed for use in medium tensile materials and is for hand or general machine use.

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