13 Oct 2002, 22:35 (Ref:403234)
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#2
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Veteran
Join Date: Apr 2001
Posts: 791
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Technical spec for Whitworth screw threads:
http://www.boltscience.com/pages/screw4.htm
These guys sell them:
http://www.a2a4.co.uk/acatalog/A2A4_...hread_127.html
If you do a Google search with "Whitworth" and "threads" as keywords, you'll find plenty more. 
Last edited by Vitesse; 13 Oct 2002 at 22:37.
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