Drill Bits
5,000+ products
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 23
- Approved Vendor #4 HSS Taper Length Drill Bit SKU 9397 $9.64
- Approved Vendor #4 Regular HSS Combined Drill Bit and Countersink SKU 9400 $2.77
- Approved Vendor #4 Solid Carbide Combined Drill Bit and Countersink SKU 9401 $53.80
- Approved Vendor #4 Solid Carbide Drill Bit SKU 9402 $34.97
- Approved Vendor #4 Tin Coated Jobber Length Drill Bit SKU 9403 $6.03
- DeWalt #4 Wire Cobalt Jobber Length Drill SKU 115-DD4204B12 $3.70
- Drill America #4 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9408 $9.54
- Drill America #4 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9413 $3.80
- Approved Vendor #4-40 HSS Combined Drill Bit & Tap (Drap) SKU 9435 $26.29
- Approved Vendor #40 Cobalt Extra Long Threaded Shank Drill Bit SKU 9568 $4.77
- Approved Vendor #40 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 9569 $1.86
- Drill America #40 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 9570 $1.36
- Approved Vendor #40 Cobalt Long Threaded Shank Drill Bit SKU 9571 $3.37
- Approved Vendor #40 Cobalt Short Threaded Shank Drill Bit SKU 9572 $3.18
- Approved Vendor #40 Cobalt Split Point Stub Drill Bit SKU 9573 $1.85
- Approved Vendor #40 Cobalt Stubby Threaded Shank Drill Bit SKU 9574 $4.01
- Approved Vendor #40 Cobalt Very Stubby Threaded Shank Drill Bit SKU 9575 $4.20
- Approved Vendor #40 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 9576 $3.50
- Drill America #40 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 9577 $0.99
- Approved Vendor #40 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 9578 $2.46
- Approved Vendor #40 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 9579 $3.50
- Drill America #40 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 9580 $1.03
- Drill America #40 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 9581 $0.65
- Approved Vendor #40 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 9582 $4.61
- Approved Vendor #40 HSS Left Hand Jobber Length Drill Bit SKU 9583 $3.08
- Approved Vendor #40 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 9584 $3.61
- Approved Vendor #40 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 9585 $1.03
- Approved Vendor #40 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 9586 $1.20
- Approved Vendor #40 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 9587 $0.99
- Approved Vendor #40 HSS Split Point Stub Drill Bit, D/AST Series SKU 9588 $0.98
- Approved Vendor #40 HSS Split Point Stub Drill Bit, DWDST Series SKU 9589 $0.80
- Approved Vendor #40 HSS Taper Length Drill Bit SKU 9591 $5.62
- Approved Vendor #40 Solid Carbide Drill Bit SKU 9592 $16.60
- Approved Vendor #40 Tin Coated Jobber Length Drill Bit SKU 9593 $3.10
- Drill America #40 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9595 $7.01
- Drill America #40 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9597 $2.05
- Approved Vendor #41 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 9598 $1.83
- Drill America #41 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 9599 $1.34
- Approved Vendor #41 Cobalt Long Threaded Shank Drill Bit SKU 9600 $5.08
- Approved Vendor #41 Cobalt Short Threaded Shank Drill Bit SKU 9601 $4.77
- Approved Vendor #41 Cobalt Split Point Stub Drill Bit SKU 9602 $1.92
- Approved Vendor #41 Cobalt Stubby Threaded Shank Drill Bit SKU 9603 $4.70
- Approved Vendor #41 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 9604 $3.50
- Drill America #41 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 9605 $0.99
- Approved Vendor #41 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 9606 $2.74
- Approved Vendor #41 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 9607 $3.50
- Drill America #41 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 9608 $1.03
- Drill America #41 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 9609 $0.74