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 8
- Approved Vendor #15 Solid Carbide Drill Bit SKU 8423 $27.16
- Approved Vendor #15 Tin Coated Jobber Length Drill Bit SKU 8424 $5.45
- DeWalt #15 Wire Cobalt Screw Machine Length Drill SKU 115-DD4315B12 $2.80
- Drill America #15 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8426 $8.30
- Drill America #15 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8428 $3.03
- Approved Vendor #16 Carbide Tipped Jobber Length Drill Bit SKU 8429 $36.24
- Approved Vendor #16 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 8430 $3.29
- Drill America #16 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 8431 $2.40
- Approved Vendor #16 Cobalt Long Threaded Shank Drill Bit SKU 8432 $5.08
- Approved Vendor #16 Cobalt Short Threaded Shank Drill Bit SKU 8433 $4.81
- Approved Vendor #16 Cobalt Split Point Stub Drill Bit SKU 8434 $3.37
- Approved Vendor #16 Cobalt Stubby Threaded Shank Drill Bit SKU 8435 $5.16
- Approved Vendor #16 Cobalt Very Stubby Threaded Shank Drill Bit SKU 8436 $5.36
- Approved Vendor #16 Extra Long Cobalt Threaded Shank Drill Bit SKU 8437 $6.13
- Approved Vendor #16 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 8438 $5.55
- Drill America #16 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 8439 $1.55
- Approved Vendor #16 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 8440 $3.84
- Approved Vendor #16 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 8441 $5.33
- Drill America #16 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 8442 $1.72
- Drill America #16 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 8443 $0.98
- Approved Vendor #16 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 8444 $8.10
- Approved Vendor #16 HSS Left Hand Jobber Length Drill Bit SKU 8445 $4.48
- Approved Vendor #16 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 8446 $6.05
- Approved Vendor #16 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 8447 $1.72
- Approved Vendor #16 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 8448 $1.97
- Approved Vendor #16 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 8449 $1.48
- Approved Vendor #16 HSS Split Point Stub Drill Bit, D/AST Series SKU 8450 $1.59
- Approved Vendor #16 HSS Split Point Stub Drill Bit, DWDST Series SKU 8451 $1.30
- Approved Vendor #16 HSS Taper Length Drill Bit SKU 8453 $8.76
- Approved Vendor #16 Solid Carbide Drill Bit SKU 8454 $28.22
- Approved Vendor #16 Tin Coated Jobber Length Drill Bit SKU 8455 $5.45
- Drill America #16 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8458 $8.30
- Drill America #16 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8460 $3.03
- Approved Vendor #17 Carbide Tipped Jobber Length Drill Bit SKU 8461 $36.24
- Approved Vendor #17 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 8462 $3.20
- Drill America #17 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 8463 $2.35
- Approved Vendor #17 Cobalt Long Threaded Shank Drill Bit SKU 8464 $6.67
- Approved Vendor #17 Cobalt Short Threaded Shank Drill Bit SKU 8465 $4.76
- Approved Vendor #17 Cobalt Split Point Stub Drill Bit SKU 8466 $3.24
- Approved Vendor #17 Cobalt Stubby Threaded Shank Drill Bit SKU 8467 $5.12
- Approved Vendor #17 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 8469 $5.09
- Drill America #17 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 8470 $1.40
- Approved Vendor #17 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 8471 $3.84
- Approved Vendor #17 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 8472 $5.33
- Drill America #17 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 8473 $1.72
- Drill America #17 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 8474 $0.98
- Approved Vendor #17 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 8475 $7.98
- Approved Vendor #17 HSS Left Hand Jobber Length Drill Bit SKU 8476 $4.48