Screw Machine Length Drill Bits

Screw machine drill bits, also known as stub drills have shorter flutes and overall lengths compared to jobber length drill bits. They are used in screw machines or where shorter drills are required.

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You searched for: BRAD & SPUR DRILLS

Drill Bit Size

Decimal Inch
Inch
Letter

0.0938 (1) | 0.1094 (1) | 0.1250 (1) | 0.1406 (1) | 0.1562 (1) | 0.1719 (1) | 0.1875 (1) | 0.2031 (1) | 0.2188 (1) | 0.2344 (1) | 0.2500 (1) | 0.2656 (1) | 0.2812 (1) | 0.2969 (1) | 0.3125 (1) | 0.3281 (1) | 0.3438 (1) | 0.3594 (1) | 0.3750 (1) | 0.3906 (1) | 0.4062 (1) | 0.4219 (1) | 0.4375 (1) | 0.4531 (1) | 0.4688 (1) | 0.4844 (1) | 0.5000 (1)

3/32 (1) | 7/64 (1) | 1/8 (1) | 9/64 (1) | 5/32 (1) | 11/64 (1) | 3/16 (1) | 13/64 (1) | 7/32 (1) | 15/64 (1) | 1/4 (1) | 17/64 (1) | 9/32 (1) | 19/64 (1) | 5/16 (1) | 21/64 (1) | 11/32 (1) | 23/64 (1) | 3/8 (1) | 25/64 (1) | 13/32 (1) | 27/64 (1) | 7/16 (1) | 29/64 (1) | 15/32 (1) | 31/64 (1) | 1/2 (1)

E (1)

Spiral Type

Spiral type refers to how close the flutes are to each other in relation to the helix angle.

Fast Spiral (23)

Fast spiral bits have finer flutes and used in high speed applications. They are used on stainless steel and soft, non-ferrous materials.

Regular Spiral (4)

Regular, also known as medium spiral bits, are used in general purpose applications. They are used on soft, non-ferrous materials.

Flute Length (Inch)

Flute length is measured from the bit's tip to the beginning of the neck or shank.

1/2 (2) | 5/8 (1) | 11/16 (1) | 3/4 (1) | 7/8 (1) | 15/16 (1) | 1 (1) | 1-1/16 (1) | 1-1/8 (1) | 1-1/4 (1) | 1-5/16 (1) | 1-3/8 (2) | 1-1/2 (1) | 1-9/16 (3) | 1-5/8 (1) | 1-3/4 (2) | 1-13/16 (1) | 1-7/8 (1) | 2 (2) | 2-1/8 (2)

Overall Length (Inch)

1-3/4 (1) | 1-13/16 (1) | 1-7/8 (1) | 1-15/16 (1) | 2-1/16 (1) | 2-1/8 (1) | 2-3/16 (1) | 2-1/4 (1) | 2-3/8 (1) | 2-7/16 (1) | 2-1/2 (1) | 2-5/8 (1) | 2-11/16 (1) | 2-3/4 (1) | 2-13/16 (1) | 2-15/16 (2) | 3-1/16 (1) | 3-1/8 (1) | 3-1/4 (1) | 3-5/16 (1) | 3-3/8 (1) | 3-7/16 (1) | 3-5/8 (2) | 3-11/16 (1) | 3-3/4 (1)

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MSC #: 01672989