Historic Machinery Services is having a run of 7/8" staybolt taps made, 5 flute 20" oal, with reamer end and driving end attached, unlike our other taps which have turned diameters on either end for attaching the pilot and driving ends. Refer to the image below for the 7/8" tap arrangement.
We also have some new 15/16", 1 1/16", and 1 1/8" taps available.
E-mail me directly with any questions, or to place an order.
Robert Yuill
http://www.historicmachineryservices.com
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