11 1/4" Long 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.

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







				Black Oxide

				1 1/16"	1.0625"	11 1/4"	5.03"	Morse Taper	Morse 3	Standard	Chicago-Latrobe	2929A446	0000000

Carbide-Insert Drill Bits

Shown with Carbide Inserts

(Sold Separately)

When you need to drill dozens or even hundreds of holes, use a bit with replaceable carbide inserts. Once the cutting edges wear down, just change the inserts instead of sharpening or throwing the bit away. The holes in the bit channel coolant through the tool for more efficient chip evacuation. Also known as indexable drill bits.

Each drill bit requires two inserts—one on the inner cutting edge and one on the outer cutting edge. Replacement inserts are sold separately.

Drill Bits												Replacement Insert Screws
				Shank			For Insert
Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Drill Bit Point Type	Inner Inscribed Circle Dia.	Outer Inscribed Circle Dia.	Mfr.		Each		Each



	2 1/4"	2.25"	11 1/4"	6 3/4"	Round	1 1/2"	Carbide Insert	0.705"	0.732"	Sandvik Coromant	2769N39	000000000	2780N16	00000

Drill Bit Inserts


Inner Inserts	Outer Inserts


Inner Inserts	Outer Inserts

								Each		Package
	For Drill Bit Size	IC Dia.	Thk.	Hole Dia.	Tip Radius	For Use On	Features		Each	Pkg. Qty.		Pkg.
Inner Inserts







				Titanium Aluminum Nitride (TiAlN)-Coated Carbide

				2 1/4", 2 1/2"	0.705"	7/32"	3/16"	1/32"	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	Chip Breakers	2776N28	000000	10	2776N786	0000000


				Outer Inserts







								Titanium Nitride (TiN)-Coated Carbide

								2 1/4", 2 1/2"	0.732"	7/32"	3/16"	3/64"	Aluminum, Brass, Bronze, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	Chip Breakers	2776N29	00000	10	2776N945	000000

Makita Electric Drills

A traditional pistol-grip shape makes these drills suitable for a variety of drilling applications. They have a variable speed motor—the further you depress the trigger, the faster the drill rotates.

Keyed Chuck—Drills with keyed chuck can be tightened with the included key.

Trigger Lock for Continuous Use—Drills with a trigger lock allow for continuous use without holding down the trigger.

Cannot Be Sold Outside United States—Drills cannot be sold to the listed areas due to product regulations.

	For Max. Bit Shank Size	Max. No-Load Rotational Speed, rpm	Chuck Type	Chuck Key Included	Current, amp	Gear Housing Material	Overall Lg.	Wt., lb.	Mfr. Model No.	Certification	Features	Cannot Be Sold To		Each
Pistol Grip



	A	1/2"	550	Keyed	Yes	6.5	Metal	11 1/4"	5	6302H	UL Listed	Trigger Lock for Continuous Use Two-Position Side Handle	Outside United States	29005A61	0000000

Reamers

Finish holes to precise inch, metric, wire gauge, or letter sizes with these reamers.

Adjustable Size, Square Shank

Finish multiple hole sizes with one reamer by moving the adjustable blades within the diameter range. Convenient for maintenance work, these have a large diameter range and don't require powered tools. They're often used to make precise size adjustments during installation of bearings and bushings.

Move the blades by tightening and loosening the two nuts on the reamer. To measure size, adjust blades to a known size (such as a bushing or ring), or measure across two opposite blades with a micrometer. When the blades become worn, they can be reground or replaced.

Turn these reamers by hand with an adjustable wrench or straight-handle tap wrench (sold separately).

Extension pilots (not included) can be used in place of the end adjustment nut to align holes that are spaced far apart.

Straight Blade—Use these reamers in straight holes that don't have a keyway or other breaks in the surface.

Angled Blade—These reamers are better than those with straight blades for finishing holes with breaks in the surface, such as a keyway.

High-Speed Steel—Durable and wear resistant, these are good for general purpose reaming in most materials.

Tool Steel—Typically more economical but less durable than high-speed steel, these are for general purpose reaming.

	Reamers									Replacement Blades			Optional Extension Pilots
	Reamer Dia.	Material	Square Shank Size	Overall Lg.	No. of Blades	For Use On	Mfr.		Each	Pkg. Qty.		Pkg.		Each
Straight Blade







				Inch

				1.1875" to 1.3438" (1 3/16" to 1 11/32")	High-Speed Steel	0.6250"	11 1/4"	6	Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	Chadwick & Trefethen	3141A25	0000000	6	3141A51	0000000	3004A25	0000000


				Angled Blade







								Inch

								1.1875" to 1.3438" (1 3/16" to 1 11/32")	Tool Steel	0.6250"	11 1/4"	6	Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium	Chadwick & Trefethen	2987A2	000000	6	2987A6	000000	3004A25	000000


								1.2500" to 1.4375" (1 1/4" to 1 7/16")	Tool Steel	0.6250"	11 1/4"	6	Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium	Chadwick & Trefethen	2987A39	000000	6	2987A79	000000	3004A25	000000

Reamers for Taper-Pin Holes

Shape holes to match the profile of taper pins. After drilling a hole that matches the size of the small end of the taper pin you want to install, use these reamers to taper and finish the hole.

Round Shank

Helix Flute

These reamers fit in the chuck of drill presses, turret lathes, and other machine and power tools, making them the most common shank type.

Helix Flute—Prevent clogging when removing excess material with helix flutes. They also leave a smoother finish than straight flutes.

High-Speed Steel—Durable and wear resistant, these are good for general purpose reaming in most materials.

Left-Hand Spiral—These reamers push chips downward as they cut, so they're often used in through holes.

					Lg.
	For Taper Pin No.	Reamer Dia. (A)	Reamer Dia. (B)	Material	Flute	Overall	No. of Flutes	Spiral Direction	Cutting Dia. Tolerance	Rate of Taper	For Use On	Mfr.		Each
Helix Flute







				Inch

				11	0.8780"	0.7060"	High-Speed Steel	8 1/4"	11 1/4"	4	Left Hand	0" to 0.5"	1:48	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Yankee	2991A29	0000000

Square Shank


Straight Flute	Spiral Flute

Turn these reamers by hand with an adjustable wrench, straight-handle tap wrench, or pin vise (sold separately).

Straight Flute—The most common flute style, these reamers are suitable for a wide range of applications, but not recommended for holes with a keyway or other breaks in the surface.

Spiral Flute—Since these reamers clear chips better than straight flutes, they leave holes with a smoother finish. They're better for holes with breaks in the surface, such as a keyway, because they cut continuously across the breaks instead of moving in and out.

High-Speed Steel—Durable and wear resistant, these are good for general purpose reaming in most materials.

Left-Hand Spiral—These reamers push chips downward as they cut, so they're often used in through holes.

						Lg.
	For Taper Pin No.	Reamer Dia. (A)	Reamer Dia. (B)	Material	Square Shank Size	Flute	Overall	No. of Flutes	Spiral Direction	Cutting Dia. Tolerance	Rate of Taper	For Use On	Mfr.		Each
Straight Flute







				Inch

				11	0.8780"	0.7060"	High-Speed Steel	0.5600"	8 1/4"	11 1/4"	8	—	0" to 0.5"	1:48	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Yankee	2990A29	0000000


				Spiral Flute







								Inch

								11	0.8780"	0.7060"	High-Speed Steel	0.5600"	8 1/4"	11 1/4"	8	Left Hand	0" to 0.5"	1:48	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Yankee	2990A59	000000