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 17
- Approved Vendor #3 Solid Carbide Drill Bit SKU 8994 $35.66
- Approved Vendor #3 Tin Coated Jobber Length Drill Bit SKU 8996 $6.03
- Drill America #3 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9001 $9.54
- Drill America #3 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9006 $3.80
- Approved Vendor #3-0 Regular HSS Combined Drill Bit and Countersink SKU 9007 $5.19
- Approved Vendor #30 Carbide Tipped Jobber Length Drill Bit SKU 9067 $32.65
- Approved Vendor #30 Cobalt Extra Long Threaded Shank Drill Bit SKU 9068 $4.96
- Approved Vendor #30 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 9069 $2.19
- Drill America #30 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 9070 $1.59
- Approved Vendor #30 Cobalt Long Threaded Shank Drill Bit SKU 9071 $3.76
- Approved Vendor #30 Cobalt Short Threaded Shank Drill Bit SKU 9072 $3.66
- Approved Vendor #30 Cobalt Split Point Stub Drill Bit SKU 9073 $2.11
- Approved Vendor #30 Cobalt Stubby Threaded Shank Drill Bit SKU 9074 $4.36
- Approved Vendor #30 Cobalt Very Stubby Threaded Shank Drill Bit SKU 9075 $4.48
- Approved Vendor #30 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 9076 $3.55
- Drill America #30 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 9077 $1.01
- Approved Vendor #30 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 9078 $2.46
- Approved Vendor #30 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 9079 $3.50
- Drill America #30 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 9080 $1.12
- Drill America #30 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 9081 $0.65
- Approved Vendor #30 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 9082 $5.32
- Approved Vendor #30 HSS Double End Drill Bit, D/ADE Series SKU 9083 $2.52
- Approved Vendor #30 HSS Double End Drill Bit, DWDDE Series SKU 9084 $1.47
- Approved Vendor #30 HSS Left Hand Jobber Length Drill Bit SKU 9085 $3.08
- Approved Vendor #30 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 9086 $3.90
- Approved Vendor #30 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 9087 $1.12
- Approved Vendor #30 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 9088 $1.30
- Approved Vendor #30 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 9089 $0.99
- Approved Vendor #30 HSS Split Point Stub Drill Bit, D/AST Series SKU 9090 $1.11
- Approved Vendor #30 HSS Split Point Stub Drill Bit, DWDST Series SKU 9091 $0.92
- Approved Vendor #30 HSS Taper Length Drill Bit SKU 9093 $8.76
- Approved Vendor #30 Solid Carbide Drill Bit SKU 9094 $18.89
- Approved Vendor #30 Tin Coated Jobber Length Drill Bit SKU 9095 $4.63
- DeWalt #30 Wire Cobalt Screw Machine Length Drill SKU 115-DD4330B12 $2.27
- Drill America #30 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9097 $7.46
- Drill America #30 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9099 $2.26
- Approved Vendor #31 Carbide Tipped Jobber Length Drill Bit SKU 9100 $32.65
- Approved Vendor #31 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 9101 $2.16
- Drill America #31 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 9102 $1.58
- Approved Vendor #31 Cobalt Long Threaded Shank Drill Bit SKU 9103 $4.30
- Approved Vendor #31 Cobalt Short Threaded Shank Drill Bit SKU 9104 $4.20
- Approved Vendor #31 Cobalt Split Point Stub Drill Bit SKU 9105 $2.11
- Approved Vendor #31 Cobalt Stubby Threaded Shank Drill Bit SKU 9106 $5.84
- Approved Vendor #31 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 9107 $3.50
- Drill America #31 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 9108 $0.99
- Approved Vendor #31 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 9109 $2.46
- Approved Vendor #31 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 9110 $3.50
- Drill America #31 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 9111 $1.03