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 12
- Approved Vendor #21 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 8702 $1.41
- Approved Vendor #21 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 8703 $1.63
- Approved Vendor #21 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 8704 $1.16
- Approved Vendor #21 HSS Split Point Stub Drill Bit, D/AST Series SKU 8705 $1.42
- Approved Vendor #21 HSS Split Point Stub Drill Bit, DWDST Series SKU 8706 $1.18
- Approved Vendor #21 HSS Taper Length Drill Bit SKU 8708 $8.76
- Approved Vendor #21 Solid Carbide Drill Bit SKU 8709 $24.19
- Approved Vendor #21 Tin Coated Jobber Length Drill Bit SKU 8710 $4.87
- DeWalt #21 Wire Cobalt Jobber Length Drill SKU 115-DD4221B12 $2.76
- DeWalt #21 Wire Cobalt Screw Machine Length Drill SKU 115-DD4321B12 $2.54
- Drill America #21 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8712 $7.46
- Drill America #21 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8714 $2.77
- Approved Vendor #22 Carbide Tipped Jobber Length Drill Bit SKU 8715 $36.24
- Approved Vendor #22 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 8716 $2.87
- Drill America #22 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 8717 $2.07
- Approved Vendor #22 Cobalt Long Threaded Shank Drill Bit SKU 8718 $5.77
- Approved Vendor #22 Cobalt Short Threaded Shank Drill Bit SKU 8719 $4.67
- Approved Vendor #22 Cobalt Split Point Stub Drill Bit SKU 8720 $2.64
- Approved Vendor #22 Cobalt Stubby Threaded Shank Drill Bit SKU 8721 $6.23
- Approved Vendor #22 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 8722 $4.78
- Drill America #22 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 8723 $1.30
- Approved Vendor #22 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 8724 $3.18
- Approved Vendor #22 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 8725 $4.37
- Drill America #22 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 8726 $1.41
- Drill America #22 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 8727 $0.77
- Approved Vendor #22 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 8728 $7.12
- Approved Vendor #22 HSS Left Hand Jobber Length Drill Bit SKU 8729 $3.75
- Approved Vendor #22 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 8730 $5.12
- Approved Vendor #22 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 8731 $1.41
- Approved Vendor #22 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 8732 $1.63
- Approved Vendor #22 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 8733 $1.16
- Approved Vendor #22 HSS Split Point Stub Drill Bit, D/AST Series SKU 8734 $1.42
- Approved Vendor #22 HSS Split Point Stub Drill Bit, DWDST Series SKU 8735 $1.18
- Approved Vendor #22 HSS Taper Length Drill Bit SKU 8737 $8.76
- Approved Vendor #22 Solid Carbide Drill Bit SKU 8738 $24.67
- Approved Vendor #22 Tin Coated Jobber Length Drill Bit SKU 8739 $4.87
- Drill America #22 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8741 $7.46
- Drill America #22 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8743 $2.77
- Approved Vendor #23 Carbide Tipped Jobber Length Drill Bit SKU 8744 $34.23
- Approved Vendor #23 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 8745 $2.87
- Drill America #23 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 8746 $2.07
- Approved Vendor #23 Cobalt Long Threaded Shank Drill Bit SKU 8747 $6.36
- Approved Vendor #23 Cobalt Short Threaded Shank Drill Bit SKU 8748 $4.66
- Approved Vendor #23 Cobalt Split Point Stub Drill Bit SKU 8749 $2.64
- Approved Vendor #23 Cobalt Stubby Threaded Shank Drill Bit SKU 8750 $6.23
- Approved Vendor #23 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 8751 $4.78
- Drill America #23 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 8752 $1.30
- Approved Vendor #23 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 8753 $3.11