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Best Reduced Shank Drill Bits for Drilling Nickel Alloys (2026)

We prioritized cobalt construction, reduced-shank dimensions and fit, user-rated durability, surface treatments, and overall value across the listed brands and sizes

This roundup covers reduced shank drill bits suited for drilling nickel alloys, focusing on material compatibility, shank fit, and corrosion and heat resistance. Picks were chosen by comparing cobalt construction, reduced-shank diameters, and user-rated durability to identify options that fit common drill chucks and hold up to high-heat nickel-alloy work

Top Picks

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    Drill America 57/64in Reduced Shank Cobalt Drill Bit

    Drill America 57/64in Reduced Shank Cobalt Drill Bit

    Drill America • ★ 4.0/5 • Budget

    Cobalt drill bit with 1/2in shank for harder metals. Improves performance with cobalt content and gold oxide surface. Some customers report variability in dullness and durability

    • cobalt enhanced performance for hard metals
    • versatile round shank for diverse toolholders
    • aerospace standard 907 compliance
    Check current price on Amazon →
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    Drill America 15/16 in Reduced Shank Cobalt Drill Bit

    Drill America 15/16 in Reduced Shank Cobalt Drill Bit

    Drill America • ★ 3.9/5 • Budget

    Cobalt drill bit with 1/2 in round shank for use in various toolholding systems. Designed for drilling harder metals; features a gold oxide surface and counterclockwise chip evacuation. One customer note highlights varied sharpness and durability

    • cobalt for harder metals
    • round shank for versatile holders
    • aerospace-standard 907
    Check current price on Amazon →
  4. 4
    DWDCO cobalt reduced-shank drill bit, 1/2 in shank

    DWDCO cobalt reduced-shank drill bit, 1/2 in shank

    Drill America • ★ 3.7/5 • Mid-Range

    Cobalt drill bit with 1/2" round shank for versatile tooling. Improves performance when cutting harder metals; round shank supports varied toolholding. Some users report brittleness and wobble in use

    • cobalt for high-temp durability
    • round shank compatibility
    • aerospace-standard manufacture
    Check current price on Amazon →
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Buying Guide

Choose cobalt for nickel alloys

Cobalt (HSSE-Co) drill bits maintain hardness at high temperatures and resist work-hardening in nickel alloys better than standard HSS

Match reduced shank size to your chuck

Measure your drill’s chuck capacity—reduced shanks let larger bits fit 3/8"–1/2" chucks but require a secure fit to avoid wobble

Look for gold oxide or surface coatings

Coatings such as gold oxide (TiN variants) can reduce friction and improve wear resistance when drilling tough nickel-based materials

Consider diameter range and availability

Select a set or individual sizes that cover the hole diameters you use most, from common fractions up to 1–2" reduced shanks for larger through-holes

Balance cost against longevity

Cobalt reduced-shank bits cost more upfront but typically last longer in nickel alloys; evaluate budget options under $50 versus premium choices above $100