130mm Long Drill Bits | McMaster-Carr

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.

Uncoated—The most economical option, uncoated bits perform best when used on low-carbon steel and aluminum. Polished to reduce friction, they're also known as bright finish bits.

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





				Gold Oxide

				9.6	0.378"	130	92.1	Round	9.6 mm	Split	30565A323	00000	—	———	0
				9.7	0.3819"	130	92.1	Round	9.7 mm	Split	30565A324	0000	—	———	0
				9.8	0.3858"	130	92.1	Round	9.8 mm	Split	30565A325	00000	—	———	0
				9.9	0.3898"	130	92.1	Round	9.9 mm	Split	30565A326	00000	—	———	0
				10.0	0.3937"	130	92.1	Round	10 mm	Split	30565A327	0000	5	30565A447	000000




						Uncoated

						10.0	0.3937"	130	87.3	Round	10 mm	Standard	2951A145	0000	—	———	0

High-Speed Steel Precise-Cut Drill Bits for Wood

Wear and heat resistant, these stay sharp longer than precise-cut bits made of plain steel. The sharp center point keeps the bit from wandering during drilling to cut accurate straight and overlapping holes, even across the grain. Also known as brad-point bits.

	Max. Drilling Dp., mm	Shank Size, mm	Drill Bit Point Type		Each
Uncoated





	Round Shank

	10.0	0.3937"	130	105	10	Brad	28205A78	000000

Left-Hand Cobalt Steel Drill Bits

Jobbers' Length

Round Shank

Split

The flutes spiral in the opposite direction of other bits and stay sharp longer than high-speed steel. They’re primarily used to remove stripped screws. Choose a bit that’s slightly smaller than the diameter of the screw’s head. Set your power tool to rotate in reverse. Slowly drill in the center of the screw head, maintaining constant pressure. As the bit penetrates, it will catch onto the screw and reverse it out of the hole. If the screw is badly stripped, you might need to punch a starter hole. Also known as reverse-flute bits.

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		1-4	5-Up
Jobbers' Length





				Uncoated

				10.0	0.3937"	130	95	Round	10 mm	Split	3474A67	000000	000000