11" Long Drill Bits | McMaster-Carr

Extended Length—Drill through panels and thick workpieces with our longest bits. Their length is good for creating deep holes but makes them less rigid than other bits. As a result, they are more prone to wobbling or breaking, especially when drilling hard materials.

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.

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







				Black Oxide

				31/32"	0.9688"	11"	4.92"	Morse Taper	Morse 3	Standard	00000000	0000000


				63/64"	0.9844"	11"	4.89"	Morse Taper	Morse 3	Standard	00000000	000000
				1"	1"	11"	4.87"	Morse Taper	Morse 3	Standard	00000000	000000


				Extended Length







								Black Oxide

								1"	1"	11"	4.87"	Round	1"	Standard	000000000	000000

Cobalt Steel Drill Bits

Jobbers' Length

Morse Taper Shank

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







				Uncoated

				1"	1"	11"	6.38"	Morse Taper	Morse 3	Split	0000000	0000000


				Extended Length







								Uncoated

								1"	1"	11"	4.37"	Round	1"	Split	00000000	000000

Carbide-Tipped Drill Bits


Extended Length Round Shank	Standard

Performance similar to solid carbide but at a lower price point. Like carbide bits, these are stronger than cobalt and high-speed steel and maintain their sharp edges when drilling abrasive material. However, when drilling tough metals like iron and hardened steel, upgrade to carbide for longer life.

					Shank
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Drill Bit Point Type		Each
Extended Length







				Uncoated

				1"	1"	11"	4.88"	Round	1"	Standard	00000000	000000

Flexible Bit Adapters

Bend these adapters up to 90° to access hard-to-reach fasteners. Use hex-shank bits (also known as insert bits) in drills and powered screwdrivers.

	For Bit Shank Type	For Bit Hex Shank Size	For Max. Drill Torque, in·lbf	Overall Lg.	Material		Each
Magnet Bit Holder



	1/4"	Hex	1/4"	156	11"	Steel	00000000	000000

Tight-Clearance Flexible Bit Screwdrivers

A flexible shaft bends around obstacles to access screws in hard-to-reach places. These screwdrivers snake into compact machinery where a rigid tool wouldn't fit. However, they may wobble if you crank them too hard. Attach a bit (not included) to drive a variety of screws with a single tool.

Quick-Change Chuck—Holds bits more securely than a magnet, so they don't accidently slip off. Pull back the chuck to insert a bit; push the chuck forward to lock the bit in place.

Ultra Grip—Designed for maximum comfort and control. The soft plastic coating and contoured shape reduce strain to prevent cramping and soreness during repetitive tasks. They also guarantee a secure grip.

			Shaft
For Bit Hex Shank Size	Overall Lg.	Material	Lg.	Overall Wd.	Bit-Holding Mechanism	Grip Style		Each
1/4"	11"	Rubber-Coated Steel	7"	9/16"	Quick-Change Chuck	Ultra Grip	000000	000000

Ball-End Driver Shafts


		Hex

Create your own tool by attaching these shafts to a handle, or use with socket wrenches and power tools. They have a ball end that allows angled entry to make good contact with the recess when a standard-tip shaft can’t.

	Overall Lg.	Max. Access Angle	Material		Each
For Hex Drives



	9/16"	11"	25°	Black Phosphate-Coated Steel	0000000	000000