ALFA TOOLS
3/8 in High Speed Steel Screw Machine Drill Bit, 135 Degree Split Point, Black Oxide, Straight Shank
Item #:
SM50221
MFR #: SM50221
Product Details
The Alfa Tools SM50221 is a heavy-duty 3/8 in. screw machine length (stub) drill bit engineered for high-production metalworking applications. Made from high speed steel in the USA and finished with a black oxide coating, it delivers reliable performance and corrosion resistance in demanding shop environments. The 135-degree split point geometry eliminates walking and reduces thrust, enabling fast, accurate starts without a center punch. Conforming to NAS 907 Type C standards, this bit is built to tight tolerances for consistent results across production drilling runs. Its compact 3-1/8 in. overall length provides excellent rigidity for precision hole-making in metal, making it ideal for drill press and screw machine use.
- 135-degree Split Point eliminates bit walking and reduces thrust for fast, accurate starts without center punching
- High Speed Steel (HSS) construction provides heat and wear resistance for drilling through metals including steel, aluminum, and cast iron
- Black Oxide finish improves lubricity and corrosion resistance for extended tool life
- Screw Machine (stub) length design delivers enhanced rigidity and reduced deflection versus jobber-length bits
- Straight shank for universal compatibility with standard drill chucks and screw machine collets
- Meets NAS 907 Type C standard for heavy-duty, high-tolerance production drilling
- USA Made for consistent quality and dimensional accuracy
Item Specifications
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Right Hand
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Heavy Duty
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135 Degrees
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Split Point
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NAS 907 Type C
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0.07 lb
