About this item:

• British Standard Whitworth (BSW).
• Split circular chrome alloy button dies are most commonly used in conjunction with a die stock handle.
• They can be used as thread chasers to clean an existing thread.
• They can also be used to create a new male thread on non-ferrous metals and plastics.
• Chrome alloy dies are not suitable for creating precision, safety or critical threads.
• The BSW thread form was developed by Sir Joseph Whitworth in 1841.
• The thread form has rounded roots and crests and is specified in BS84:1956.
• The thread angle for BSW is 55 as opposed to 60 in Metric and Unified threads.

Options

• 4808-1/4-1D
• 4808-1/8-1D
• 4808-1/2-1D
• 4808-3/16-1D
• 4808-5/16-1D
• 4808-3/8-1D
• 4808-7/16-1D
• 4808-5/32-1D

Options

• 4808-1/2-1D
• 4808-1/4-1D
• 4808-1/8-1D
• 4808-3/16-1D
• 4808-3/8-1D
• 4808-5/16-1D
• 4808-5/32-1D
• 4808-7/16-1D