Drill Bits

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This section covers twist drill bits for metal, wood and plastic, along with step drills, masonry bits and drill bit sets. Lengths include stub (screw machine), jobber, taper and extra-long. Materials range from general-purpose high-speed steel (HSS) to cobalt for stainless and tough alloys and solid carbide for production machining. Sizes come in fractional, letter, number (wire gauge) and metric series, with black oxide, bright, gold oxide and titanium nitride finishes.

What to check before you order

• Workpiece material. HSS suits mild steel, aluminum and wood. Cobalt holds up in stainless. Carbide-tipped masonry bits are for concrete and block in a hammer drill.
• Point style. A 135 degree split point self-centers and cuts harder metals. A 118 degree point is common for general work.
• Length. Stub length bits are stiffer and wander less. Use jobber length for general work and taper or extra-long only when you need reach.
• Shank. Check the chuck. Reduced shank bits fit a 1/2" chuck on larger sizes, and SDS shanks fit rotary hammers.
• Tap drill sizes. Number and letter sizes exist mainly to drill tap holes. Keep a chart near the drill press.

Common questions

What is a jobber length drill bit?

It is the standard general-purpose length, long enough for most hand drill and drill press work while still fairly rigid.

Learn more in our drill bit materials guide, browse Alfa Tool bits, or see taps and dies and all cutting tools.

Drill Bits: page 40

• Approved Vendor 1-7/16" Cobalt HSS Reduced Shank 135° Drill Bit, 1/2" Shank SKU 188 $487.68
• Approved Vendor 1-7/16" HSS Reduced Shank 135° Drill Bit, 1/2" Shank SKU 187 $187.33
• Approved Vendor 1-7/32" 3MT HSS Undersized Shank Taper Shank Drill Bit SKU 13616 $110.07
• Approved Vendor 1-7/32" HSS 4MT Taper Shank Drill Bit SKU 13617 $87.51
• Approved Vendor 1-7/32" HSS Black & Gold Drill Bit with Reduced 1/2" 3-Flat Shank, Contractor Series SKU 13618 $42.41
• Approved Vendor 1-7/32" HSS Reduced Shank 135° Drill Bit, 1/2" Shank SKU 170 $120.97
• Approved Vendor 1-7/32" HSS Reduced Shank Drill Bit 3/4" Shank, DWDRSD Series SKU 13619 $84.35
• Approved Vendor 1-7/32" Reduced Shank HSS Drill Bit 1/2" 3-Flat Shank, D/A3F Series SKU 13622 $83.54
• Approved Vendor 1-7/32" Reduced Shank HSS Drill Bit 1/2" Shank, D/ARSD Series SKU 13623 $82.92
• Approved Vendor 1-7/32" Reduced Shank HSS Drill Bit 1/2" Shank, DWDRSD Series SKU 13624 $39.40
• Approved Vendor 1-7/64" HSS 4MT Taper Shank Drill Bit SKU 13625 $77.47
• Approved Vendor 1-7/64" HSS Black & Gold Drill Bit with Reduced 1/2" 3-Flat Shank, Contractor Series SKU 13626 $35.61
• Approved Vendor 1-7/64" HSS Reduced Shank 135° Drill Bit, 1/2" Shank SKU 161 $100.02
• Approved Vendor 1-7/64" HSS Split Point Stub Drill Bit, DWDST Series SKU 13627 $71.24
• Approved Vendor 1-7/64" Reduced Shank HSS Drill Bit 1/2" Shank, D/ARSD Series SKU 13628 $70.66
• Approved Vendor 1-7/64" Reduced Shank HSS Drill Bit 1/2" Shank, DWDRSD Series SKU 13629 $32.66
• Approved Vendor 1-7/8" 4MT HSS Undersized Shank Taper Shank Drill Bit SKU 13635 $261.94
• Irwin 1-7/8" Forstner Bit Marples SKU 585-1966937 $29.66
• Approved Vendor 1-7/8" Forstner Drill Bit SKU 13641 $26.21
• Approved Vendor 1-7/8" HSS 5MT Taper Shank Drill Bit SKU 13644 $256.16
• Approved Vendor 1-7/8" HSS Reduced Shank Drill Bit 3/4" Shank, DWDRSD Series SKU 13645 $255.04
• DeWalt 1-7/8in SDS Max Comb Hammer w/E-CL SKU 115-D25733K $1,396.81
• Approved Vendor 1-9/16" 4MT HSS Undersized Shank Taper Shank Drill Bit SKU 13699 $184.86
• Approved Vendor 1-9/16" HSS 5MT Taper Shank Drill Bit SKU 13707 $177.04
• Approved Vendor 1-9/16" HSS Reduced Shank Drill Bit 3/4" Shank, DWDRSD Series SKU 13708 $169.85
• DeWalt 1-9/16" SDS Max Combination Hammer Kit w/ Shocks SKU 115-D25481K $524.52
• Approved Vendor 1-9/32" HSS 4MT Taper Shank Drill Bit SKU 13721 $113.77
• Approved Vendor 1-9/32" HSS Black & Gold Drill Bit with Reduced 1/2" 3-Flat Shank, Contractor Series SKU 13722 $46.52
• Approved Vendor 1-9/32" HSS Reduced Shank 135° Drill Bit, 1/2" Shank SKU 175 $139.69
• Approved Vendor 1-9/32" HSS Reduced Shank Drill Bit 3/4" Shank, DWDRSD Series SKU 13723 $104.85
• Approved Vendor 1-9/32" HSS Split Point Stub Drill Bit, DWDST Series SKU 13724 $109.19
• Approved Vendor 1-9/32" Reduced Shank HSS Drill Bit 1/2" Shank, D/ARSD Series SKU 13725 $90.54
• Approved Vendor 1-9/32" Reduced Shank HSS Drill Bit 1/2" Shank, DWDRSD Series SKU 13726 $45.59
• Approved Vendor 1-9/64" 3MT HSS Undersized Shank Taper Shank Drill Bit SKU 13727 $100.40
• Approved Vendor 1-9/64" HSS 4MT Taper Shank Drill Bit SKU 13728 $82.09
• Approved Vendor 1-9/64" HSS Reduced Shank 135° Drill Bit, 1/2" Shank SKU 164 $102.11
• Approved Vendor 1-9/64" HSS Split Point Stub Drill Bit, DWDST Series SKU 13730 $73.87
• Approved Vendor 1-9/64" Reduced Shank HSS Drill Bit 1/2" Shank, D/ARSD Series SKU 13731 $75.20
• Approved Vendor 1-9/64" Reduced Shank HSS Drill Bit 1/2" Shank, DWDRSD Series SKU 13732 $33.35
• Approved Vendor 1.00mm Cobalt Jobber Length Drill Bit, D/ACO Series SKU 13733 $2.70
• Drill America 1.00mm HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 13734 $1.71
• Approved Vendor 1.00mm HSS Jobber Length Drill Bit SKU 13735 $0.90
• Approved Vendor 1.05mm HSS Jobber Length Drill Bit SKU 13736 $0.90
• Alfa Tool 1.1/2 X 18 Overall 7/16 Shank Ship Auger Bits SKU AUG61366 $98.32
• Alfa Tool 1.1/4 X 18 Overall 7/16 Shank Ship Auger Bits SKU AUG61356 $71.30
• Approved Vendor 1.10mm HSS Jobber Length Drill Bit SKU 13737 $0.90
• Approved Vendor 1.15mm HSS Jobber Length Drill Bit SKU 13738 $0.90
• Approved Vendor 1.20mm HSS Jobber Length Drill Bit SKU 13739 $0.88

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