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 29
- Approved Vendor #50 Cobalt Split Point Stub Drill Bit SKU 9951 $1.89
- Approved Vendor #50 Cobalt Stubby Threaded Shank Drill Bit SKU 9952 $4.63
- Approved Vendor #50 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 9953 $3.40
- Drill America #50 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 9954 $0.96
- Approved Vendor #50 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 9955 $2.74
- Approved Vendor #50 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 9956 $3.50
- Drill America #50 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 9957 $1.10
- Drill America #50 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 9958 $0.74
- Approved Vendor #50 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 9959 $4.51
- Approved Vendor #50 HSS Left Hand Jobber Length Drill Bit SKU 9960 $3.08
- Approved Vendor #50 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 9961 $3.82
- Approved Vendor #50 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 9962 $1.10
- Approved Vendor #50 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 9963 $1.20
- Approved Vendor #50 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 9964 $0.99
- Approved Vendor #50 HSS Split Point Stub Drill Bit, D/AST Series SKU 9965 $0.98
- Approved Vendor #50 HSS Split Point Stub Drill Bit, DWDST Series SKU 9966 $0.80
- Approved Vendor #50 HSS Taper Length Drill Bit SKU 9968 $3.72
- Approved Vendor #50 Solid Carbide Drill Bit SKU 9969 $12.91
- Drill America #50 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9971 $10.63
- Drill America #50 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9973 $3.30
- Approved Vendor #51 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 9974 $1.80
- Drill America #51 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 9975 $1.33
- Approved Vendor #51 Cobalt Split Point Stub Drill Bit SKU 9976 $1.89
- Approved Vendor #51 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 9977 $3.40
- Drill America #51 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 9978 $0.96
- Approved Vendor #51 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 9979 $2.74
- Approved Vendor #51 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 9980 $3.50
- Drill America #51 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 9981 $1.10
- Drill America #51 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 9982 $0.74
- Approved Vendor #51 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 9983 $4.51
- Approved Vendor #51 HSS Left Hand Jobber Length Drill Bit SKU 9984 $3.11
- Approved Vendor #51 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 9985 $3.82
- Approved Vendor #51 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 9986 $1.10
- Approved Vendor #51 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 9987 $1.20
- Approved Vendor #51 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 9988 $0.99
- Approved Vendor #51 HSS Split Point Stub Drill Bit, D/AST Series SKU 9989 $0.98
- Approved Vendor #51 HSS Split Point Stub Drill Bit, DWDST Series SKU 9990 $0.80
- Approved Vendor #51 HSS Taper Length Drill Bit SKU 9992 $3.72
- Approved Vendor #51 Solid Carbide Drill Bit SKU 9993 $12.91
- Drill America #51 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9995 $12.78
- Drill America #51 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9997 $3.30
- Approved Vendor #52 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 9998 $1.80
- Drill America #52 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 9999 $1.33
- Approved Vendor #52 Cobalt Split Point Stub Drill Bit SKU 10000 $1.89
- Approved Vendor #52 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 10001 $3.30
- Drill America #52 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 10002 $0.93
- Approved Vendor #52 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 10003 $2.74
- Approved Vendor #52 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 10004 $3.50