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cj7jeep 02-22-2002, 07:28 PM Can anybody tell me what drill bit I need to make a pilot hole for a 7/8 tap? Bought a 7/8-18 tap to make a draglink and tierod ,but I want to test in on scrap and make sure it works with my TRE's before I buy tubing. Thanks for any help. Kurtastrophe 02-22-2002, 07:37 PM Source: http://www.shoptools.com/drillchart.htm A 7/8-14 (fine thread) tap drill will be a 13/16" bit. A 7/8-9 (coarse thread) tap drill will be a 49/64" bit. 66CJdean 02-22-2002, 07:42 PM 7/8X18 will be something like a 53/64 Kurtastrophe 02-22-2002, 08:01 PM Ooops... http://www.korit.com/tapndrill.htm Yes, a 53/64" drill is what you want to use. cj7jeep 02-22-2002, 08:06 PM Thanks guys for the fast replys.:beer: :beer: :beer: | |