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 34

• Approved Vendor #62 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 10784 $4.58
• Approved Vendor #62 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 10785 $1.35
• Approved Vendor #62 HSS Taper Length Drill Bit SKU 10786 $4.00
• Approved Vendor #63 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 10787 $3.45
• Drill America #63 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 10788 $2.19
• Approved Vendor #63 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 10789 $2.90
• Drill America #63 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 10790 $1.35
• Drill America #63 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 10791 $0.79
• Approved Vendor #63 HSS Cobalt 135° Split Point Jobber Length Drill Bit SKU 10792 $7.11
• Approved Vendor #63 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 10793 $4.58
• Approved Vendor #63 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 10794 $1.35
• Approved Vendor #63 HSS Taper Length Drill Bit SKU 10795 $4.00
• Approved Vendor #64 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 10796 $3.45
• Drill America #64 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 10797 $2.19
• Approved Vendor #64 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 10798 $2.90
• Drill America #64 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 10799 $1.35
• Drill America #64 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 10800 $0.79
• Approved Vendor #64 HSS Cobalt 135° Split Point Jobber Length Drill Bit SKU 10801 $7.11
• Approved Vendor #64 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 10802 $4.58
• Approved Vendor #64 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 10803 $1.35
• Approved Vendor #64 HSS Taper Length Drill Bit SKU 10804 $4.00
• Approved Vendor #65 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 10805 $3.45
• Drill America #65 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 10806 $2.19
• Approved Vendor #65 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 10807 $2.90
• Drill America #65 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 10808 $1.35
• Drill America #65 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 10809 $0.79
• Approved Vendor #65 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 10811 $4.58
• Approved Vendor #65 HSS Taper Length Drill Bit SKU 10813 $4.00
• Approved Vendor #66 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 10814 $3.63
• Drill America #66 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 10815 $2.31
• Approved Vendor #66 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 10816 $2.90
• Drill America #66 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 10817 $1.35
• Drill America #66 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 10818 $0.79
• Approved Vendor #66 HSS Cobalt 135° Split Point Jobber Length Drill Bit SKU 10819 $7.49
• Approved Vendor #66 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 10820 $4.58
• Approved Vendor #66 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 10821 $1.35
• Approved Vendor #66 HSS Taper Length Drill Bit SKU 10822 $4.85
• Approved Vendor #67 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 10823 $3.63
• Drill America #67 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 10824 $2.31
• Approved Vendor #67 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 10825 $2.90
• Drill America #67 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 10826 $1.35
• Drill America #67 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 10827 $0.79
• Approved Vendor #67 HSS Cobalt 135° Split Point Jobber Length Drill Bit SKU 10828 $7.49
• Approved Vendor #67 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 10829 $4.58
• Approved Vendor #67 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 10830 $1.35
• Approved Vendor #67 HSS Taper Length Drill Bit SKU 10831 $4.85
• Approved Vendor #68 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 10832 $3.63
• Drill America #68 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 10833 $2.31

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