Unior BSA Bottom Bracket Taps 1697-US

Pair of Unior 1697-US taps for chasing and cleaning BSA bottom bracket threads. Ideal if you are fitting or replacing a bottom bracket and want clean threads, free from paint or anodising residue.

• Cleans paint and anodising residue from BSA threads
• Two taps, left-hand (L) and right-hand, for chasing both sides of the frame
• Magnetic handles included, with adapters and a guide to keep the tap straight
• Works on steel, aluminium, titanium and carbon frames with threaded inserts
• Chases existing threads: does not cut threads in unthreaded material

Technical specifications

• Item code: 626475 (1697-US)
• GTIN: 3838909264752
• Thread: 1.37″ × 24 TPI (BSA), left- and right-hand threads
• Contents: Left-hand BSA tap (marked «L») and right-hand BSA tap
• Contents: 2 1695.1/4BI-US magnetic handles (code 626465)
• Contents: 2 BSA 1697.2/4 tap adapters (code 626467)
• Contents: 1 guide for 1697.1 and 1698.1 taps, 1697.4 (code 627325)
• Compatibility: Steel, aluminium, titanium and carbon frames with threaded inserts
• Intended use: Chasing and cleaning existing BSA bottom bracket threads, removing paint and anodising build-up; does not cut threads in unthreaded material

Unior was founded in 1919 in Zreče, in present-day Slovenia, where it is still based. For bicycle care, it makes tools, repair stands and wheel equipment. Its name, adopted in the 1970s, comes from the expression “universal tools” and reflects its roots in metalworking.