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 9
- Approved Vendor #17 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 8477 $6.05
- Approved Vendor #17 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 8478 $1.72
- Approved Vendor #17 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 8479 $1.78
- Approved Vendor #17 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 8480 $1.48
- Approved Vendor #17 HSS Split Point Stub Drill Bit, D/AST Series SKU 8481 $1.56
- Approved Vendor #17 HSS Split Point Stub Drill Bit, DWDST Series SKU 8482 $1.28
- Approved Vendor #17 HSS Taper Length Drill Bit SKU 8484 $8.76
- Approved Vendor #17 Solid Carbide Drill Bit SKU 8485 $27.83
- Approved Vendor #17 Tin Coated Jobber Length Drill Bit SKU 8486 $5.45
- Drill America #17 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8488 $8.30
- Drill America #17 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8490 $3.03
- Approved Vendor #18 Carbide Tipped Jobber Length Drill Bit SKU 8491 $36.24
- Approved Vendor #18 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 8492 $2.87
- Drill America #18 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 8493 $2.14
- Approved Vendor #18 Cobalt Short Threaded Shank Drill Bit SKU 8495 $4.70
- Approved Vendor #18 Cobalt Split Point Stub Drill Bit SKU 8496 $2.73
- Approved Vendor #18 Cobalt Stubby Threaded Shank Drill Bit SKU 8497 $5.75
- Approved Vendor #18 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 8498 $5.09
- Drill America #18 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 8499 $1.40
- Approved Vendor #18 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 8500 $3.21
- Approved Vendor #18 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 8501 $4.55
- Drill America #18 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 8502 $1.54
- Drill America #18 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 8503 $0.78
- Approved Vendor #18 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 8504 $7.35
- Approved Vendor #18 HSS Left Hand Jobber Length Drill Bit SKU 8505 $3.94
- Approved Vendor #18 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 8506 $5.51
- Approved Vendor #18 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 8507 $1.54
- Approved Vendor #18 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 8508 $1.70
- Approved Vendor #18 HSS Split Point Stub Drill Bit, D/AST Series SKU 8510 $1.50
- Approved Vendor #18 HSS Split Point Stub Drill Bit, DWDST Series SKU 8511 $1.26
- Approved Vendor #18 Tin Coated Jobber Length Drill Bit SKU 8515 $5.01
- DeWalt #18 Wire Cobalt Jobber Length Drill SKU 115-DD4218B12 $2.82
- DeWalt #18 Wire Cobalt Screw Machine Length Drill SKU 115-DD4318B12 $2.44
- Drill America #18 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8517 $8.30
- Drill America #18 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8519 $3.03
- Approved Vendor #19 Carbide Tipped Jobber Length Drill Bit SKU 8520 $36.24
- Approved Vendor #19 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 8521 $2.87
- Drill America #19 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 8522 $2.08
- Approved Vendor #19 Cobalt Long Threaded Shank Drill Bit SKU 8523 $4.81
- Approved Vendor #19 Cobalt Short Threaded Shank Drill Bit SKU 8524 $4.17
- Approved Vendor #19 Cobalt Split Point Stub Drill Bit SKU 8525 $2.64
- Approved Vendor #19 Cobalt Stubby Threaded Shank Drill Bit SKU 8526 $4.83
- Approved Vendor #19 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 8527 $5.09
- Drill America #19 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 8528 $1.40
- Approved Vendor #19 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 8529 $3.21
- Approved Vendor #19 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 8530 $4.55
- Drill America #19 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 8531 $1.54
- Drill America #19 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 8532 $0.78