Some of the wheel cylinders I've bought have had that type bleeder screw. Not sure why either. Can't remember now whether they were in reproductions or NOS I've bought both. The bolt head may have been 5/16 diameter of bolt smaller.

Last edited by kb3csw; 12/05/2012 8:30 AM.
1938 1.5-Ton Chevy
1948 2-Ton Chevy

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