BSF (British Standard Fine) Tap and die Set : Amazon.co.uk: DIY & Tools
BSW & BSF Threads
1/2 x 16 BSF Go/No Go Thread Plug Gage w/handle
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BSF Thread Ring Gage Set – WESTport Corp.
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5/16" - 22 TPI BSF HELICOIL THREAD REPAIR KIT
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V-COIL - 1/2" x 16TPI BSF -Thread Repair Kit
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5/8“ x 14TPI BSF No-Go Ring Gauge (JBO) | Cutwel - Gauge Supplier
Sherwood Plug Tap, Straight Flute, 3/16in. x 32 BSF, High Speed Steel, BSF, Bright 0851600C | Cromwell Tools
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Round die Thread Die Right Hand Coating BSF/BSW Screw Thread Die for Pitch Thread Tapping Tools Metal Threading Die (Color : BSW 5l16 18) : Amazon.co.uk: DIY & Tools