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Oversized tap for internal threads mating with HDG bolt

Oversized tap for internal threads mating with HDG bolt

Oversized tap for internal threads mating with HDG bolt

(OP)
Does anyone know of a tool manufacturer that will make special taps?  I need an oversized tap that will meet the allowable dimensions in ASTM A563 for overtapping nut thread to permit assembly on a hot dipped galvanized bolt.  I am having no luck getting anyone I know of to make this.

RE: Oversized tap for internal threads mating with HDG bolt

I have worked with MSC tool company directly here in the US when looking for oversize taps.  Although they don't manufacture anything, they were able to order a custom tap through a "confidential supplier".  

-Reidh

RE: Oversized tap for internal threads mating with HDG bolt

Try Portland Bolt.

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