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 22
- Approved Vendor #39 Cobalt Long Threaded Shank Drill Bit SKU 9330 $5.16
- Approved Vendor #39 Cobalt Short Threaded Shank Drill Bit SKU 9331 $5.48
- Approved Vendor #39 Cobalt Split Point Stub Drill Bit SKU 9332 $1.85
- Approved Vendor #39 Cobalt Stubby Threaded Shank Drill Bit SKU 9333 $6.26
- Approved Vendor #39 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 9334 $3.50
- Drill America #39 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 9335 $0.99
- Approved Vendor #39 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 9336 $2.46
- Approved Vendor #39 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 9337 $3.50
- Drill America #39 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 9338 $1.03
- Drill America #39 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 9339 $0.65
- Approved Vendor #39 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 9340 $4.61
- Approved Vendor #39 HSS Left Hand Jobber Length Drill Bit SKU 9341 $3.08
- Approved Vendor #39 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 9342 $3.61
- Approved Vendor #39 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 9343 $1.03
- Approved Vendor #39 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 9344 $1.20
- Approved Vendor #39 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 9345 $0.99
- Approved Vendor #39 HSS Split Point Stub Drill Bit, D/AST Series SKU 9346 $0.98
- Approved Vendor #39 HSS Split Point Stub Drill Bit, DWDST Series SKU 9347 $0.80
- Approved Vendor #39 HSS Taper Length Drill Bit SKU 9349 $5.62
- Approved Vendor #39 Solid Carbide Drill Bit SKU 9350 $17.70
- Approved Vendor #39 Tin Coated Jobber Length Drill Bit SKU 9351 $3.10
- Drill America #39 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9353 $7.68
- Drill America #39 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9355 $2.39
- Approved Vendor #4 Carbide Tipped Jobber Length Drill Bit SKU 9360 $38.34
- Approved Vendor #4 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 9364 $4.75
- Drill America #4 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 9365 $3.45
- Approved Vendor #4 Cobalt Long Threaded Shank Drill Bit SKU 9366 $6.20
- Approved Vendor #4 Cobalt Short Threaded Shank Drill Bit SKU 9367 $5.88
- Approved Vendor #4 Cobalt Split Point Stub Drill Bit SKU 9368 $4.52
- Approved Vendor #4 Cobalt Stubby Threaded Shank Drill Bit SKU 9369 $6.23
- Approved Vendor #4 High Speed Steel Black & Gold Round Shank Step Drill Bit, (3/16" - 7/8" by 1/16") SKU 9371 $107.72
- Approved Vendor #4 High Speed Steel Round Shank Step Drill Bit, (3/16" - 7/8" by 1/16") SKU 9373 $107.72
- Approved Vendor #4 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 9375 $6.62
- Drill America #4 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 9376 $1.90
- Approved Vendor #4 HSS Black & Gold Step Drill Bit (3/16" - 7/8" by 1/16") SKU 9378 $35.21
- Approved Vendor #4 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 9379 $4.55
- Approved Vendor #4 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 9380 $6.31
- Drill America #4 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 9381 $2.19
- Drill America #4 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 9382 $1.22
- Approved Vendor #4 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 9383 $11.31
- Approved Vendor #4 HSS Left Hand Jobber Length Drill Bit SKU 9385 $5.98
- Approved Vendor #4 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 9386 $7.48
- Approved Vendor #4 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 9387 $2.19
- Approved Vendor #4 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 9390 $2.33
- Approved Vendor #4 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 9391 $1.80
- Approved Vendor #4 HSS Split Point Stub Drill Bit, D/AST Series SKU 9392 $1.96
- Approved Vendor #4 HSS Split Point Stub Drill Bit, DWDST Series SKU 9393 $1.64
- Approved Vendor #4 HSS Step Drill Bit (3/16" - 7/8" by 1/16") SKU 9394 $35.21