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BB2012: Steel Threaded, 1.562" OD x 73.5 mm Wide

BB2012: Steel Threaded, 1.562" OD x 73.5 mm Wide

10 In stock

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This bottom bracket shell is machined from 1.562" x .120" wall 1020 steel tubing. The outside diameter is the the stock tube diameter. The width is 73.5 mm, supplied 0.5 mm oversize to allow clean up after welding. The threads are 1.370"-24, right and left hand; thread length is 0.50". The left hand thread is identified by a radial groove on the face of the shell. The minor diameter of the thread is 1.330"/1.340" and is relieved on the inside diameter to 1.385"/1.395".

Important Information
  1. This threaded bottom bracket shells is 1.37" x 24 threads per inch and right and left threaded (also known as British Standard, ISO/English or BSA), making it compatible with all modern threaded bottom bracket spindles.
  2. Use our heatsink FT5002 (see Related Products on this page).

Item sold individually.

Photo courtesy of Chris Berkley.



Item Number BB2012
Alloy 1020
Weight/Grams 161
Style English
Outside Diameter 1.562"
Actual Width 73.5 mm
STEP File (right click, "save as") BB2012
PDF Drawing BB2012