6.9 mm Drill Bits | McMaster-Carr

Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these bits can last 50% longer than uncoated bits.

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		1-9	10-Up
Jobbers' Length







				Gold Oxide

				6.9	0.2717"	105	69.9	Round	6.9 mm	Split	30565A293	00000	00000


				Short Length







								Black Oxide

								6.9	0.2717"	74	34	Round	6.9 mm	Split	28255A119	0000	0000

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.

Titanium Nitride (TiN) Coated—Drill at higher speeds and last longer than uncoated and oxide-coated bits, especially on tough materials like hardened steel and nickel.

Titanium Aluminum Nitride (TiAlN) Coated—The hardest and most wear-resistant coating, especially at high temperatures. These bits are best for hard and abrasive materials, such as iron, titanium, and fiberglass.

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







				Titanium Nitride (TiN) Coated

				6.9	0.2717"	109	69	Round	6.9 mm	Split	5058N136	000000




						Titanium Aluminum Nitride (TiAlN) Coated

						6.9	0.2717"	109	69	Round	6.9 mm	Split	5058N147	00000




								Gold Oxide

								6.9	0.2717"	109	55.2	Round	6.9 mm	Split	29355A116	0000

Thread-Locking Threaded Inserts with Installation Tools

What you need to add or repair threads quickly in parts under stress or vibration. These inserts come with a closed-end tap, a drill bit, and an installation bit. Also known as E-Z Lok, they have Loctite® adhesive already applied, and the adhesive reaches full strength after 72 hours.

Standard Wall—Stronger than thin-wall inserts, these are your go-to choice for threading most holes.

Black Phosphate-Coated Steel—These inserts resist occasional moisture.

	Drill Bit Size, mm	For Max. Hole Dia., mm	Drive Style	No. of Inserts Included		Each
Standard Wall







	Black Phosphate-Coated Steel

	M4 x 0.7 mm	M8 x 1.25 mm	7.5	6.9	6.9	Slotted	10	90025A110	000000


	M5 x 0.8 mm	M8 x 1.25 mm	7.5	6.9	6.9	Slotted	10	90025A111	00000

Undersized Hardened Multipurpose M2 High-Speed Tool Steel Rods

These rods, also known as drill blanks, have an undersized diameter for machining your own drill bits. They're hardened for increased abrasion and impact resistance. M2 tool steel offers a nice balance of wear resistance and machinability. It has a high molybdenum content, which allows it to maintain sharp cutting edges even at elevated temperatures.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Dia., mm	Dia. Tolerance, mm	Drill Bit Size, mm	Lg.	Yield Strength	Hardness	Mechanical Finish		Each
6.9	-0.005 to 0	6.9	4 1/8"	Not Rated	Rockwell C60 (Extra Hard)	Precision Ground	2900A346	00000