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.
Popular drill bits
- Alfa Tool "A" Cobalt Screw Machine Drill SKU SMCO60401 $6.40
- Approved Vendor "A" HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 6405 $10.43
- Approved Vendor "A" HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 6406 $4.86
- Approved Vendor "A" HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 6407 $9.03
- Approved Vendor "A" HSS Cobalt 135° Split Point Jobber Length Drill Bit SKU 6408 $12.20
- Approved Vendor "A" HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 6409 $8.38
- Alfa Tool "B" Cobalt Screw Machine Drill SKU SMCO60402 $5.82
- Alfa Tool "B" Cobalt Split Point Jobber Drill SKU CO60202 $5.60
- Approved Vendor "B" HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 6410 $10.43
- Approved Vendor "B" HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 6411 $4.86
- Approved Vendor "B" HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 6412 $9.03
- Approved Vendor "B" HSS Cobalt 135° Split Point Jobber Length Drill Bit SKU 6413 $13.97
- Approved Vendor "B" HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 6414 $8.59
- Alfa Tool "C" Cobalt Screw Machine Drill SKU SMCO60403 $6.02
- Alfa Tool "C" Cobalt Split Point Jobber Drill SKU CO60203 $5.72
- Approved Vendor "C" HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 6415 $10.00
- Approved Vendor "C" HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 6416 $4.86
- Approved Vendor "C" HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 6417 $8.67
- Approved Vendor "C" HSS Cobalt 135° Split Point Jobber Length Drill Bit SKU 6418 $13.97
- Approved Vendor "C" HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 6419 $8.10
- Alfa Tool "D" Cobalt Screw Machine Drill SKU SMCO60404 $5.94
- Alfa Tool "D" Cobalt Split Point Jobber Drill SKU CO60204 $5.94
- Approved Vendor "D" HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 6420 $10.00
- Approved Vendor "D" HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 6421 $4.86
- Approved Vendor "D" HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 6422 $8.67
- Approved Vendor "D" HSS Cobalt 135° Split Point Jobber Length Drill Bit SKU 6423 $15.69
- Approved Vendor "D" HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 6424 $8.10
- Alfa Tool "E" Cobalt Screw Machine Drill SKU SMCO60405 $6.10
- Alfa Tool "E" Cobalt Split Point Jobber Drill SKU CO60205 $5.32
- Approved Vendor "E" HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 6425 $10.00
- Approved Vendor "E" HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 6426 $4.56
- Approved Vendor "E" HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 6427 $8.67
- Approved Vendor "E" HSS Cobalt 135° Split Point Jobber Length Drill Bit SKU 6428 $12.33
- Approved Vendor "E" HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 6429 $8.46
- Alfa Tool "E" HSS Probit Cone Drill Tin Coated SKU MB52505TN $66.22
- Alfa Tool "E"Hss Probit Cone Drill TN Coated Carded SKU MB52505TNC $68.72
- Alfa Tool "F" Cobalt Screw Machine Drill SKU SMCO60406 $7.50
- Alfa Tool "F" Cobalt Split Point Jobber Drill SKU CO60206 $6.96
- Approved Vendor "F" HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 6430 $11.27
- Approved Vendor "F" HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 6431 $5.19
- Approved Vendor "F" HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 6432 $9.68
- Approved Vendor "F" HSS Cobalt 135° Split Point Jobber Length Drill Bit SKU 6433 $13.84
- Approved Vendor "F" HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 6434 $9.71
- Alfa Tool "G" Cobalt Screw Machine Drill SKU SMCO60407 $7.54
- Approved Vendor "G" HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 6435 $11.63
- Approved Vendor "G" HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 6436 $5.72
- Approved Vendor "G" HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 6437 $9.96
- Alfa Tool "G" HSS Blitz Bit Jobber Length Drill SKU BB74207 $5.04