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 24
- Approved Vendor #41 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 9610 $4.56
- Approved Vendor #41 HSS Left Hand Jobber Length Drill Bit SKU 9611 $3.08
- Approved Vendor #41 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 9612 $3.61
- Approved Vendor #41 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 9613 $1.03
- Approved Vendor #41 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 9614 $1.20
- Approved Vendor #41 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 9615 $0.99
- Approved Vendor #41 HSS Split Point Stub Drill Bit, D/AST Series SKU 9616 $0.98
- Approved Vendor #41 HSS Split Point Stub Drill Bit, DWDST Series SKU 9617 $0.80
- Approved Vendor #41 HSS Taper Length Drill Bit SKU 9619 $5.62
- Approved Vendor #41 Solid Carbide Drill Bit SKU 9620 $16.60
- Drill America #41 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9622 $9.54
- Drill America #41 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9624 $2.58
- Approved Vendor #42 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 9625 $1.80
- Drill America #42 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 9626 $1.33
- Approved Vendor #42 Cobalt Long Threaded Shank Drill Bit SKU 9627 $5.08
- Approved Vendor #42 Cobalt Short Threaded Shank Drill Bit SKU 9628 $4.77
- Approved Vendor #42 Cobalt Split Point Stub Drill Bit SKU 9629 $1.89
- Approved Vendor #42 Cobalt Stubby Threaded Shank Drill Bit SKU 9630 $6.57
- Approved Vendor #42 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 9631 $3.50
- Drill America #42 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 9632 $0.99
- Approved Vendor #42 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 9633 $2.74
- Approved Vendor #42 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 9634 $3.50
- Drill America #42 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 9635 $1.03
- Drill America #42 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 9636 $0.74
- Approved Vendor #42 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 9637 $4.51
- Approved Vendor #42 HSS Left Hand Jobber Length Drill Bit SKU 9638 $3.08
- Approved Vendor #42 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 9639 $3.61
- Approved Vendor #42 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 9640 $1.03
- Approved Vendor #42 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 9641 $1.20
- Approved Vendor #42 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 9642 $0.99
- Approved Vendor #42 HSS Split Point Stub Drill Bit, D/AST Series SKU 9643 $0.98
- Approved Vendor #42 HSS Split Point Stub Drill Bit, DWDST Series SKU 9644 $0.80
- Approved Vendor #42 HSS Taper Length Drill Bit SKU 9646 $4.74
- Approved Vendor #42 Solid Carbide Drill Bit SKU 9647 $15.91
- Drill America #42 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9651 $2.58
- Approved Vendor #43 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 9652 $1.80
- Drill America #43 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 9653 $1.33
- Approved Vendor #43 Cobalt Long Threaded Shank Drill Bit SKU 9654 $5.08
- Approved Vendor #43 Cobalt Short Threaded Shank Drill Bit SKU 9655 $4.77
- Approved Vendor #43 Cobalt Split Point Stub Drill Bit SKU 9656 $1.89
- Approved Vendor #43 Cobalt Stubby Threaded Shank Drill Bit SKU 9657 $5.91
- Approved Vendor #43 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 9658 $3.40
- Drill America #43 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 9659 $0.96
- Approved Vendor #43 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 9660 $2.74
- Approved Vendor #43 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 9661 $3.50
- Drill America #43 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 9662 $1.03
- Drill America #43 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 9663 $0.74
- Approved Vendor #43 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 9664 $4.51