Greenlee DTAPM4C DRILL/TAP, M4 X .70 (POP)
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- Back tapered beyond tap to prevent thread damage from over-drilling
- Deburr/countersink also provided on bit beyond back taper
- Made from hardened high-speed steel vs. carbon steel for longer life
- High quality hex shank to ensure strong connection to drill chuck
- Designed to tap up to 10-gauge metal