Spiral Point Tap: #0-80 UNF, 2 Flutes, Plug Chamfer, 3B Class of Fit, High-Speed Steel, Bright/Uncoated MPN:TT91000

Solid pilot counterbore provides accurate center punch hole positioning on both wood and metal materials which allows consistent pilot drill bit fitting while avoiding damaging of the outer surface edges during milling hence reducing risk of split or misalignment when fastening or attaching assemblies together via screws or bolts. The 0.285 inch diameter bore having a standard counterbore pilot diameter of one hundred sixty-three thousandth of an inch allows for the quickest, accurate alignment of holes thus ensures that all screws remain parallel during installation process without disturbance or stripping the thread when applied within aircraft, automotive industries where minute accuracy is required hence its application under various settings becomes efficient, effective to accomplish tasks quickly and securely with reduced mistakes.