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 37

• Approved Vendor #75 HSS Taper Length Drill Bit SKU 11059 $5.30
• Approved Vendor #76 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 11060 $4.55
• Drill America #76 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 11061 $2.88
• Approved Vendor #76 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 11062 $3.79
• Drill America #76 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 11063 $1.84
• Drill America #76 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 11064 $1.09
• Approved Vendor #76 HSS Cobalt 135° Split Point Jobber Length Drill Bit SKU 11065 $9.22
• Approved Vendor #76 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 11066 $6.05
• Approved Vendor #76 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 11067 $1.84
• Approved Vendor #76 HSS Taper Length Drill Bit SKU 11068 $6.35
• Approved Vendor #77 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 11069 $4.55
• Drill America #77 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 11070 $2.88
• Approved Vendor #77 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 11071 $3.79
• Drill America #77 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 11072 $1.84
• Drill America #77 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 11073 $1.09
• Approved Vendor #77 HSS Cobalt 135° Split Point Jobber Length Drill Bit SKU 11074 $9.22
• Approved Vendor #77 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 11075 $6.05
• Approved Vendor #77 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 11076 $1.84
• Approved Vendor #77 HSS Taper Length Drill Bit SKU 11077 $6.35
• Approved Vendor #78 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 11078 $4.55
• Drill America #78 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 11079 $2.88
• Approved Vendor #78 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 11080 $3.79
• Drill America #78 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 11081 $1.84
• Drill America #78 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 11082 $1.09
• Approved Vendor #78 HSS Cobalt 135° Split Point Jobber Length Drill Bit SKU 11083 $9.22
• Approved Vendor #78 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 11084 $6.05
• Approved Vendor #78 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 11085 $1.84
• Approved Vendor #78 HSS Taper Length Drill Bit SKU 11086 $6.35
• Approved Vendor #79 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 11087 $4.55
• Drill America #79 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 11088 $2.88
• Alfa Tool #79 HSS Alfa Usa Jobber Drill Bright SKU J160179B $8.44
• Approved Vendor #79 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 11089 $3.79
• Drill America #79 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 11090 $1.84
• Drill America #79 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 11091 $1.09
• Approved Vendor #79 HSS Cobalt 135° Split Point Jobber Length Drill Bit SKU 11092 $9.22
• Approved Vendor #79 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 11093 $6.05
• Approved Vendor #79 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 11094 $1.84
• Approved Vendor #79 HSS Taper Length Drill Bit SKU 11095 $6.35
• Approved Vendor #8 Carbide Tipped Jobber Length Drill Bit SKU 11102 $38.34
• Approved Vendor #8 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 11104 $3.71
• Drill America #8 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 11105 $2.69
• Approved Vendor #8 Cobalt Long Threaded Shank Drill Bit SKU 11106 $5.45
• Approved Vendor #8 Cobalt Short Threaded Shank Drill Bit SKU 11107 $4.66
• Approved Vendor #8 Cobalt Split Point Stub Drill Bit SKU 11108 $3.49
• Approved Vendor #8 Cobalt Stubby Threaded Shank Drill Bit SKU 11109 $5.53
• Approved Vendor #8 Cobalt Very Stubby Threaded Shank Drill Bit SKU 11110 $6.82
• Approved Vendor #8 Extra Long Cobalt Threaded Shank Drill Bit SKU 11111 $6.82
• Approved Vendor #8 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 11112 $6.34

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