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 45
- Approved Vendor 1/4" HSS Black & Gold Split Point Drill Bit with 3-Flat Shank, Contractor Series SKU 16057 $1.61
- Approved Vendor 1/4" HSS Black & Gold Split Point Stub Drill Bit, Contractor Series SKU 16058 $1.91
- Approved Vendor 1/4" HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 16059 $3.42
- Approved Vendor 1/4" HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 16060 $6.25
- Drill America 1/4" HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 16061 $2.16
- Drill America 1/4" HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 16062 $0.97
- Approved Vendor 1/4" HSS Cobalt 135° Split Point Jobber Length Drill Bit SKU 16063 $11.12
- Approved Vendor 1/4" HSS Double End Drill Bit, D/ADE Series SKU 16064 $5.28
- Approved Vendor 1/4" HSS Double End Drill Bit, DWDDE Series SKU 16065 $3.57
- Approved Vendor 1/4" HSS Jobber Length Drill Bit Blank SKU 16066 $4.85
- Approved Vendor 1/4" HSS Left Hand Jobber Length Drill Bit SKU 16067 $6.93
- Approved Vendor 1/4" HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 16068 $6.07
- Approved Vendor 1/4" HSS Polished Jobber Length Drill Bit, D/AP Series SKU 16069 $2.17
- Approved Vendor 1/4" HSS Polished Jobber Length Drill Bit, DWDP Series SKU 16070 $1.84
- Approved Vendor 1/4" HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 16076 $2.49
- Approved Vendor 1/4" HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 16077 $1.90
- Approved Vendor 1/4" HSS Split Point Stub Drill Bit, D/AST Series SKU 16078 $2.25
- Approved Vendor 1/4" HSS Split Point Stub Drill Bit, DWDST Series SKU 16079 $1.69
- Approved Vendor 1/4" HSS Taper Length Drill Bit SKU 16087 $7.25
- DeWalt 1/4" Pilot Point Drill Bit SKU 115-DW1916B $6.64
- Approved Vendor 1/4" Solid Carbide Drill Bit SKU 16111 $36.93
- Approved Vendor 1/4" Tin Coated Jobber Length Drill Bit SKU 16120 $5.15
- Approved Vendor 1/4" x 12" SDS Plus Carbide Tipped Hammer Masonry Drill Bit SKU 16147 $49.70
- Approved Vendor 1/4" X 12" HSS Aircraft Extension Drill Bit, D/AA/C SKU 16149 $12.10
- Drill America 1/4" X 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 16150 $8.80
- Approved Vendor 1/4" x 12" SDS-Plus Hammer Bit Drill Bit SKU 16153 $16.27
- Approved Vendor 1/4" x 13" Carbide Tipped Masonry Drill Bit SKU 16154 $6.34
- Approved Vendor 1/4" x 18" Carbide Tipped Masonry Drill Bit SKU 16156 $11.27
- Approved Vendor 1/4" x 30" Carbide Tipped Masonry Drill Bit SKU 16200 $13.90
- Approved Vendor 1/4" x 4" SDS Plus Carbide Tipped Hammer Masonry Drill Bit SKU 16202 $14.21
- Approved Vendor 1/4" x 4" Carbide Tipped Masonry Drill Bit SKU 16203 $1.45
- Approved Vendor 1/4" x 4" SDS-Plus Hammer Bit Drill Bit SKU 16206 $4.54
- Approved Vendor 1/4" x 6" SDS Plus Carbide Tipped Hammer Masonry Drill Bit SKU 16219 $16.28
- Approved Vendor 1/4" x 6" Carbide Tipped Masonry Drill Bit SKU 16220 $2.29
- Approved Vendor 1/4" x 6" HSS Aircraft Extension Drill Bit, D/AA/C SKU 16222 $5.97
- Drill America 1/4" x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 16223 $4.07
- Approved Vendor 1/4" x 6" SDS-Plus Hammer Bit Drill Bit SKU 16226 $5.22
- Approved Vendor 1/4" x 8" SDS Plus Carbide Tipped Hammer Masonry Drill Bit SKU 16228 $21.98
- Approved Vendor 1/4" x 8" SDS-Plus Hammer Bit Drill Bit SKU 16231 $7.10
- Approved Vendor 1/4"-20 HSS Combined Drill Bit & Tap (Drap) SKU 16309 $28.10
- DeWalt 1/4in Masonry Bit SKU 115-DW2574 $11.14
- Approved Vendor 1/64" Cobalt Jobber Length Drill Bit, D/ACO Series SKU 17448 $3.37
- Drill America 1/64" Cobalt Jobber Length Drill Bit, DWDCO Series SKU 17449 $2.45
- Approved Vendor 1/64" HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 17450 $1.78
- Drill America 1/64" HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 17451 $1.64
- Drill America 1/64" HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 17452 $0.49
- Approved Vendor 1/64" HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 17453 $7.71
- Approved Vendor 1/64" HSS Jobber Length Drill Bit Blank SKU 17454 $2.20