4 1/8" Drill Bits | McMaster-Carr

Filter by

System of Measurement

Drill Bit Size

0.35 mm to 2.5 mm (Increments of 0.05 mm)

1", 1 1/32", 1 1/16", 1 1/8", 1 5/32", 1 3/16", 1 1/4", 1 5/16", 1 3/8", 1 7/16", 1 1/2"

1.0 mm to 10.0 mm (Increments of 0.5 mm)

1.0 mm to 13.0 mm (Increments of 0.5 mm)

1.0 mm to 5.9 mm (Increments of 0.1 mm)

1.0 mm to 6.9 mm (Increments of 0.1 mm)

1.0 mm to 7.0 mm (Increments of 0.5 mm)

1/16" to 1/2" (Increments of 1/64")

1/16" to 1/2" (increments of 1/32")

1/16" to 1/4" (Increments of 1/64")

1/16" to 3/8" (Increments of 1/64")

1/2" to 1" (Increments of 1/64")

1/64" to 1/4" (increments of 1/64")

2.6 mm to 10.0 mm (Increments of 0.1 mm)

6.0 mm to 10.0 mm (Increments of 0.1 mm)

9/16" to 1" (increments of 1/16")

33/64" to 63/64" (Increments of 1/64")

Decimal Size Equivalent

For Use On

Overall Length

Bit Style

Drill Bit Point Type

Shank Type

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

REACH

RoHS

Shank Size

Sold As

Finish

Material

1 Product

About Drill Bits

Compare material, finish, length class, and decimal size equivalents.

Fast-Cutting Drill Bits for Wood

The screw point draws the bit in, quickly boring holes without applying pressure.

For technical drawings and 3-D models, click on a part number.

			Shank
Drill Bit Size	Decimal Size Equivalent	Overall Lg.	Type	Size	Point Style		Each
Inch
Black-Oxide Steel

4 1/8"	4.125"	6 1/4"	Quick-Change Hex	1/2"	Screw	0000000	0000000