Drill Bits
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Expected delivery: Wed, Nov 18
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 21
- Approved Vendor #37 Cobalt Split Point Stub Drill Bit SKU 9276 $2.02
- Approved Vendor #37 Cobalt Stubby Threaded Shank Drill Bit SKU 9277 $5.65
- Approved Vendor #37 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 9278 $3.50
- Drill America #37 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 9279 $0.99
- Approved Vendor #37 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 9280 $2.46
- Approved Vendor #37 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 9281 $3.50
- Drill America #37 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 9282 $1.03
- Drill America #37 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 9283 $0.65
- Approved Vendor #37 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 9284 $4.91
- Approved Vendor #37 HSS Left Hand Jobber Length Drill Bit SKU 9285 $3.08
- Approved Vendor #37 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 9286 $3.61
- Approved Vendor #37 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 9287 $1.03
- Approved Vendor #37 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 9288 $1.20
- Approved Vendor #37 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 9289 $0.99
- Approved Vendor #37 HSS Split Point Stub Drill Bit, D/AST Series SKU 9290 $0.98
- Approved Vendor #37 HSS Split Point Stub Drill Bit, DWDST Series SKU 9291 $0.80
- Approved Vendor #37 HSS Taper Length Drill Bit SKU 9293 $6.44
- Approved Vendor #37 Solid Carbide Drill Bit SKU 9294 $18.14
- Approved Vendor #37 Tin Coated Jobber Length Drill Bit SKU 9295 $3.10
- Drill America #37 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9297 $7.68
- Drill America #37 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9299 $2.32
- Approved Vendor #38 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 9300 $1.86
- Drill America #38 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 9301 $1.36
- Approved Vendor #38 Cobalt Long Threaded Shank Drill Bit SKU 9302 $5.16
- Approved Vendor #38 Cobalt Short Threaded Shank Drill Bit SKU 9303 $5.48
- Approved Vendor #38 Cobalt Split Point Stub Drill Bit SKU 9304 $1.85
- Approved Vendor #38 Cobalt Stubby Threaded Shank Drill Bit SKU 9305 $6.26
- Approved Vendor #38 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 9306 $3.50
- Drill America #38 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 9307 $0.99
- Approved Vendor #38 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 9308 $2.46
- Approved Vendor #38 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 9309 $3.50
- Drill America #38 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 9310 $1.03
- Drill America #38 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 9311 $0.65
- Approved Vendor #38 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 9312 $4.61
- Approved Vendor #38 HSS Left Hand Jobber Length Drill Bit SKU 9313 $3.08
- Approved Vendor #38 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 9314 $3.61
- Approved Vendor #38 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 9315 $1.03
- Approved Vendor #38 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 9316 $1.20
- Approved Vendor #38 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 9317 $0.99
- Approved Vendor #38 HSS Split Point Stub Drill Bit, D/AST Series SKU 9318 $0.98
- Approved Vendor #38 HSS Split Point Stub Drill Bit, DWDST Series SKU 9319 $0.80
- Approved Vendor #38 HSS Taper Length Drill Bit SKU 9321 $6.44
- Approved Vendor #38 Solid Carbide Drill Bit SKU 9322 $18.14
- Approved Vendor #38 Tin Coated Jobber Length Drill Bit SKU 9323 $3.10
- Drill America #38 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9325 $7.68
- Drill America #38 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9327 $2.32
- Approved Vendor #39 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 9328 $1.86
- Drill America #39 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 9329 $1.36