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 16
- Drill America #29 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 8930 $1.09
- Approved Vendor #29 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 8931 $2.83
- Approved Vendor #29 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 8932 $3.87
- Drill America #29 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 8933 $1.16
- Drill America #29 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 8934 $0.65
- Approved Vendor #29 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 8935 $6.01
- Approved Vendor #29 HSS Left Hand Jobber Length Drill Bit SKU 8936 $3.08
- Approved Vendor #29 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 8937 $4.37
- Approved Vendor #29 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 8938 $1.16
- Approved Vendor #29 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 8939 $1.36
- Approved Vendor #29 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 8940 $0.99
- Approved Vendor #29 HSS Split Point Stub Drill Bit, D/AST Series SKU 8941 $1.14
- Approved Vendor #29 HSS Split Point Stub Drill Bit, DWDST Series SKU 8942 $0.93
- Approved Vendor #29 HSS Taper Length Drill Bit SKU 8944 $8.76
- Approved Vendor #29 Solid Carbide Drill Bit SKU 8945 $20.37
- Approved Vendor #29 Tin Coated Jobber Length Drill Bit SKU 8946 $4.63
- DeWalt #29 Wire Cobalt Jobber Length Drill SKU 115-DD4229B12 $2.34
- Drill America #29 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8948 $7.46
- Drill America #29 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8950 $2.77
- Approved Vendor #3 Carbide Tipped Jobber Length Drill Bit SKU 8952 $38.34
- Approved Vendor #3 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 8956 $4.75
- Drill America #3 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 8957 $3.45
- Approved Vendor #3 Cobalt Long Threaded Shank Drill Bit SKU 8958 $6.02
- Alfa Tool #3 Cobalt Screw Machine Drill SKU SMCO60303 $5.04
- Approved Vendor #3 Cobalt Short Threaded Shank Drill Bit SKU 8959 $5.71
- Approved Vendor #3 Cobalt Split Point Stub Drill Bit SKU 8960 $5.07
- Approved Vendor #3 Cobalt Stubby Threaded Shank Drill Bit SKU 8961 $6.86
- Approved Vendor #3 High Speed Steel Black & Gold Round Shank Step Drill Bit, (1/4" - 3/4" by 1/16") SKU 8963 $95.87
- Approved Vendor #3 High Speed Steel Round Shank Step Drill Bit, (1/4" - 3/4" by 1/16") SKU 8965 $95.87
- Approved Vendor #3 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 8967 $6.62
- Drill America #3 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 8968 $1.90
- Approved Vendor #3 HSS Black & Gold Step Drill Bit (1/4" - 3/4" by 1/16") SKU 8970 $31.29
- Approved Vendor #3 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 8971 $4.55
- Approved Vendor #3 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 8972 $6.31
- Drill America #3 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 8973 $2.19
- Drill America #3 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 8974 $1.22
- Approved Vendor #3 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 8975 $11.31
- Approved Vendor #3 HSS Left Hand Jobber Length Drill Bit SKU 8977 $5.98
- Approved Vendor #3 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 8978 $7.48
- Approved Vendor #3 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 8979 $2.19
- Approved Vendor #3 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 8982 $2.33
- Approved Vendor #3 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 8983 $1.80
- Approved Vendor #3 HSS Split Point Stub Drill Bit, D/AST Series SKU 8984 $1.96
- Approved Vendor #3 HSS Split Point Stub Drill Bit, DWDST Series SKU 8985 $1.64
- Approved Vendor #3 HSS Step Drill Bit (1/4" - 3/4" by 1/16") SKU 8986 $31.29
- Approved Vendor #3 HSS Taper Length Drill Bit SKU 8989 $9.64
- Approved Vendor #3 Regular HSS Combined Drill Bit and Countersink SKU 8992 $2.77
- Approved Vendor #3 Solid Carbide Combined Drill Bit and Countersink SKU 8993 $39.42