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 11
- Approved Vendor #20 Carbide Tipped Jobber Length Drill Bit SKU 8650 $36.24
- Approved Vendor #20 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 8651 $2.87
- Drill America #20 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 8652 $2.08
- Approved Vendor #20 Cobalt Long Threaded Shank Drill Bit SKU 8653 $4.46
- Approved Vendor #20 Cobalt Short Threaded Shank Drill Bit SKU 8654 $4.17
- Approved Vendor #20 Cobalt Split Point Stub Drill Bit SKU 8655 $2.64
- Approved Vendor #20 Cobalt Stubby Threaded Shank Drill Bit SKU 8656 $4.48
- Approved Vendor #20 Cobalt Very Stubby Threaded Shank Drill Bit SKU 8657 $5.36
- Approved Vendor #20 Extra Long Cobalt Threaded Shank Drill Bit SKU 8658 $5.55
- Approved Vendor #20 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 8659 $4.84
- Drill America #20 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 8660 $1.31
- Approved Vendor #20 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 8661 $3.21
- Approved Vendor #20 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 8662 $4.55
- Drill America #20 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 8663 $1.54
- Drill America #20 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 8664 $0.78
- Approved Vendor #20 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 8665 $7.14
- Approved Vendor #20 HSS Double End Drill Bit, D/ADE Series SKU 8666 $3.84
- Approved Vendor #20 HSS Double End Drill Bit, DWDDE Series SKU 8667 $2.36
- Approved Vendor #20 HSS Left Hand Jobber Length Drill Bit SKU 8668 $3.94
- Approved Vendor #20 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 8669 $5.51
- Approved Vendor #20 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 8670 $1.54
- Approved Vendor #20 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 8671 $1.66
- Approved Vendor #20 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 8672 $1.22
- Approved Vendor #20 HSS Split Point Stub Drill Bit, D/AST Series SKU 8673 $1.45
- Approved Vendor #20 HSS Split Point Stub Drill Bit, DWDST Series SKU 8674 $1.20
- Approved Vendor #20 HSS Taper Length Drill Bit SKU 8676 $8.76
- Approved Vendor #20 Solid Carbide Drill Bit SKU 8677 $24.39
- Approved Vendor #20 Tin Coated Jobber Length Drill Bit SKU 8678 $5.01
- Drill America #20 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8681 $7.46
- Drill America #20 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8683 $2.77
- Approved Vendor #21 Carbide Tipped Jobber Length Drill Bit SKU 8684 $36.24
- Approved Vendor #21 Cobalt Extra Long Threaded Shank Drill Bit SKU 8685 $5.46
- Approved Vendor #21 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 8686 $2.87
- Drill America #21 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 8687 $2.07
- Approved Vendor #21 Cobalt Long Threaded Shank Drill Bit SKU 8688 $4.46
- Approved Vendor #21 Cobalt Short Threaded Shank Drill Bit SKU 8689 $4.17
- Approved Vendor #21 Cobalt Split Point Stub Drill Bit SKU 8690 $2.64
- Approved Vendor #21 Cobalt Stubby Threaded Shank Drill Bit SKU 8691 $5.12
- Approved Vendor #21 Cobalt Very Stubby Threaded Shank Drill Bit SKU 8692 $5.36
- Approved Vendor #21 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 8693 $4.84
- Drill America #21 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 8694 $1.31
- Approved Vendor #21 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 8695 $3.18
- Approved Vendor #21 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 8696 $4.37
- Drill America #21 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 8697 $1.41
- Drill America #21 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 8698 $0.77
- Approved Vendor #21 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 8699 $7.12
- Approved Vendor #21 HSS Left Hand Jobber Length Drill Bit SKU 8700 $3.75
- Approved Vendor #21 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 8701 $5.12