29 Piece M42 Cobalt Screw Machine Drill Bit Set Stub Length A Through Z Sizes Gold Oxide Finish for Stainless Steel and Hard Metals D ASTCO Series For Precision Drilling Projects

29-piece M42 cobalt screw machine drill bit set, A-Z sizes
✔️ Stub-length bits covering A to Z sizes with gold oxide finish

These cobalt steel drills are built for precision metalworking, especially when drilling stainless steel and hard alloys. They shine in screw-machine setups and heavy-duty machine drilling where space is limited and fast chip evacuation matters.

✅ 26 piece set with 135-degree split point for self-centering drilling
✅ Gold oxide finish is thinner than black oxide, giving near-uncoated performance
✅ Round shanks fit a wide range of toolholding systems
✅ Short, rugged construction for screw machine setups and limited spindle clearance
✅ Comes in a metal case for portable storage and organization

💡 What is a screw machine drill bit set used for in precision metalworking applications?

These handy bits are used to drill precise holes in stainless steel and hard alloys, especially in space-constrained environments.

- handy for stainless steel, nickel alloys, and other hard metals
- ideal for portable or machine drilling in screw-machine setups
- cobalt content boosts wear resistance and edge life
- gold oxide finish helps identification and corrosion resistance
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