Premium HSS Number Drill Bits (#51–#80)

#51-#80 Premium High Speed Black Oxide Number Size Drill Bits

Pack of 12 per size – Select size from dropdown

The Premium HSS Number Drill Bit set is perfect for precision drilling in a range of materials, high quality M2 High Speed Steel Jobber Drill Bit. Great for drilling mild to hard steel. Made from high-quality M2 HSS, these drill bits are durable and can withstand high speeds and high heat, making them ideal for use in a range of applications.

Extremely small number size / wire gauge drill bits built for precision work where standard and even larger number sizes are too large.

Sizes #51 through #80 are used for:

• Micro drilling
• Small fasteners and fine threads
• Electronics and detailed work
• Precision tap drill sizing in smaller diameters

When accuracy matters at small scale, number drill bits are the standard.

SMALL DIAMETER NOTICE

Sizes #51–#80 are very small and require proper technique:

• Use light pressure
• Avoid side loading
• Use proper RPM
• Best used in drill presses or controlled setups

COMMON USES

• Micro tap drill sizing
• Precision hole work
• Electronics & detailed fabrication
• Small fasteners and fine threads

NEED MORE SIZES?

• Larger sizes (#1–#50) → Shop Here

Improper use can cause breakage due to the small diameter.

Need full size breakdown?
View Drill Size Conversion Chart → HERE

High Performance B/O series

Ground from solid ready to outlast and out perform. The Black Oxide coating help to extend the lifespan of these drill bits making them far less susceptible to rust or corrosion throughout use. This coating will also reduce friction and make the drill able to withstand more heat allowing your bits to stay sharp much longer.

If you have any questions please call us at 800-350-8665

QTY: 1 = pack of 12