7.7mm Shank Size Drill Bits | McMaster-Carr

Filter by

Product Family

System of Measurement

Drill Bit Size

Decimal Size Equivalent

For Use On

Stainless Steel

Length

Shank Size

0.005" to 0.04"

0.008" to 1/16"

0.012" to 0.015"

0.012" to 5/32"

0.012" to 0.291"

0.014" to 0.039"

0.014" to 5/32"

0.02" to 0.291"

0.028" to 5/32"

0.031" to 0.25"

7/64" to 19/32"

0.2 mm to 1.5 mm

0.3 mm to 0.4 mm

0.3 mm to 6.5 mm

0.3 mm to 7.3 mm

0.3 mm to 7.4 mm

0.4 mm to 1.5 mm

0.4 mm to 6.5 mm

0.4 mm to 10 mm

0.5 mm to 6.5 mm

0.5 mm to 7.4 mm

0.5 mm to 10 mm

0.5 mm to 13 mm

0.5 mm to 16 mm

0.5 mm to 19 mm

0.6 mm to 7.3 mm

0.6 mm to 7.4 mm

0.7 mm to 6.5 mm

0.8 mm to 10 mm

1.1 mm to 13 mm

1.5 mm to 10 mm

1.5 mm to 13 mm

1.6 mm to 12.7 mm

1.6 mm to 13 mm

1.6 mm to 16 mm

2.5 mm to 10 mm

2.5 mm to 13 mm

2.5 mm to 16 mm

4.5 mm to 19 mm

5 mm to 20.3 mm

5.2 mm to 25.4 mm

6.4 mm to 9.5 mm

10 mm to 25.4 mm

Material

High-Speed Steel

Maximum Drilling Depth

Length Class

Drill Bit Point Type

Bit Style

Flute Direction

Flute Type

Manufacturer

Viking Norseman Drill

Number of Flutes

Overall Length

Point Angle

Sold As

Finish

Black/Gold Oxide

DFARS Specialty Metals

Export Control Classification Number (ECCN)

REACH

RoHS

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Certification

Military Specification

How can we improve?

3 Products

About Drill Bits

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

Material

High-Speed Steel

High-Speed Steel

Versatile bits resist heat and wear to stay sharp

Cobalt Steel

Resist higher temperatures and last twice as long as high-speed steel

Performance

Chip Clearing

Prevent clogs and dissipate heat

High-Speed Steel Drill Bits


Jobbers' Length Round Shank	Split

Our basic drill bits are also the most versatile. Cut holes in a variety of metals, from the softest aluminum to the hardest steel.

Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.

Black/Gold Oxide—Like black oxide, this finish adds wear resistance and reduces friction for improved chip flow. Because it’s less prone to flaking off, it offers better rust protection when bits aren't in use.

					Shank					Each
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Type	Size	Drill Bit Point Type	Mfr.		1-4	5-Up
Jobbers' Length







				Black/Gold Oxide

				7.7	0.3032"	114	79.8	Round	7.7 mm	Split	Viking Norseman Drill	30565A302	00000	00000

Cobalt Steel Drill Bits


Jobbers' Length Round Shank	Split

Tough and wear resistant, cobalt steel bits last at least twice as long as high-speed steel. They can also run up to 25% faster at higher temperatures without being damaged on hard materials, such as nickel.

Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.

Uncoated—Polished to eject chips, these are also known as bright finish bits.

					Shank					Each
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Type	Size	Drill Bit Point Type	Mfr.		1-4	5-Up
Jobbers' Length







				Uncoated

				7.7	0.3032"	114	80.2	Round	7.7 mm	Split	Viking Norseman Drill	29355A126	000000	00000

Chip-Clearing Cobalt Steel Drill Bits


Jobbers' Length Parabolic Flute Round Shank	Split

Avoid clogs and dissipate heat with cobalt bits that last at least twice as long as high-speed steel. The flutes clear chips to improve coolant flow and prevent damage to the bit and the hole. They also speed up drilling since you don't have to stop to clear the bit manually.

Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.

Uncoated—Polished to eject chips, these are also known as bright finish bits.

						Shank
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Flute Type	Type	Size, mm	Drill Bit Point Type	Mfr.		Each
Jobbers' Length







				Uncoated

				7.7	0.3032"	117	73	Parabolic	Round	7.7	Split	Viking Norseman Drill	2771N775	000000

back to top

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)