How To Screw Tapcons Into Concrete shorts What Size Drill Bit For 3 8 Concrete Anchor
If it's UNF 3/8 24TPI, you need 1/24″ smaller drill, which means a 0.3333″. 21/64″ would be slightly under, 11/32″ slightly over. A letter R Cobra Wall Driller Plus Drywall Anchor What size drill bit would you use to install 3/8 anchor bolts? - Quora Technical Specifications for Wedge Anchors ...