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BSF Thread Plug Gages

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BSF Thread Plug Gages

  • British Standard Fine
  • Whitworth form
  • 55 degree included angle


Part# Product Name Size TPI Price
BSFTPG1 BSF Go/NoGo Thread Plug 3/16 32 Call
BSFTPGS1 BSF Thread Plug Gage Set 3/16 32 Call
BSFTPG2 BSF Go/NoGo Thread Plug 1/4 26 Call
BSFTPGS2 BSF Thread Plug Gage Set 1/4 26 Call
BSFTPG3 BSF Go/NoGo Thread Plug 5/16 22 Call
BSFTPGS3 BSF Thread Plug Gage Set 5/16 22 Call
BSFTPG4 BSF Go/NoGo Thread Plug 3/8 20 Call
BSFTPGS4 BSF Thread Plug Gage Set 3/8 20 Call
BSFTPG5 BSF Go/NoGo Thread Plug 7/16 18 Call
BSFTPGS5 BSF Thread Plug Gage Set 7/16 18 Call
BSFTPG6 BSF Go/NoGo Thread Plug 1/2 16 Call
BSFTPGS6 BSF Thread Plug Gage Set 1/2 16 Call
BSFTPG7 BSF Go/NoGo Thread Plug 9/16 16 Call
BSFTPGS7 BSF Thread Plug Gage Set 9/16 16 Call
BSFTPG8 BSF Go/NoGo Thread Plug 5/8 14 Call
BSFTPGS8 BSF Thread Plug Gage Set 5/8 14 Call
BSFTPG9 BSF Go/NoGo Thread Plug 3/4 12 Call
BSFTPGS9 BSF Thread Plug Gage Set 3/4 12 Call
BSFTPG10 BSF Go/NoGo Thread Plug 7/8 11 Call
BSFTPGS10 BSF Thread Plug Gage Set 7/8 11 Call
BSFTPG11 BSF Go/NoGo Thread Plug 1 10 Call
BSFTPGS11 BSF Thread Plug Gage Set 1 10 Call
BSFTPG12 BSF Go/NoGo Thread Plug 1 1/8 9 Call
BSFTPGS12 BSF Thread Plug Gage Set 1 1/8 9 Call
BSFTPG13 BSF Go/NoGo Thread Plug 1 1/4 9 Call
BSFTPGS13 BSF Thread Plug Gage Set 1 1/4 9 Call
BSFTPG14 BSF Go/NoGo Thread Plug 1 3/8 8 Call
BSFTPGS14 BSF Thread Plug Gage Set 1 3/8 8 Call
BSFTPG15 BSF Go/NoGo Thread Plug 1 1/2 8 Call
BSFTPGS15 BSF Thread Plug Gage Set 1 1/2 8 Call


BSF also is known as British Standard Fine screw thread. They are of the Whitworth form having a 55 degree included angle. These gages were created because Whitworth gages could be too coarse. This thread form is now more often used for replacement parts. BSF bolts hold many engine and gearbox parts in a Series One.
WESTport provides a complete line of BSF (British Standard Fine) Thread Plug Gages. They are available in sizes from 3/16 inch to 4 inches. Free Technical support is available from our core of engineers to assist you with any questions you may have.

WESTport Manufactured Products. 24th Anniversary Servicing Industry Worldwide (1989-2013)