Single-Flute Countersinks

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Number of Flutes

Countersink Angle

System of Measurement

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For Use On

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Material

Finish

Aluminum Titanium Nitride (AlTiN) Coated

Titanium Aluminum Nitride (TiAlN) Coated

Titanium Carbon Nitride (TiCN) Coated

Titanium Nitride (TiN) Coated

Hole Diameter

Overall Length

Shank Type

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Number of Countersinking Ends

Shank Material

Carbide

Steel

Body Diameters Included

Countersink Type

Flute Type

For Cutting

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

REACH

RoHS

Length

Number of Pieces

Insert Shape

Container Type

459 Products

About Countersinks

Choose the right countersink angle, body diameter, and number of flutes for your application.

For Cutting

Screw Holes

Widen the openings of holes so flat-head screws sit flush with the surface

231 products

Rivet Holes

Widen the openings of holes so rivets sit flush with the surface

144 products

For Cutting

Lathe Center Holes

Cut a profiled recess to keep your workpiece aligned as it spins

102 products

Material

High-Speed Steel

Make accurate cuts in most materials without chipping or cracking

154 products

Countersinks for Screws

Cut a cone-shaped opening in a hole so your flat- or oval-head screw sits flush with the surface. Choose an 82° countersink angle for inch screws or a 90° countersink angle for metric screws.

High-Speed Steel

1 Flute

These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.

Titanium Nitride (TiN) Coated—Withstand heat, corrosion, and abrasion better than uncoated and black oxide countersinks, so they stay sharp over longer periods.

Number of Flutes—Countersinks with fewer flutes reduce chatter, so you can run them at high speeds. Countersinks with a higher number of flutes remove more material per revolution, leaving a smoother finish and extending tool life.

	Dia.				Uncoated		Titanium Nitride (TiN) Coated
	Body	Shank	Overall Lg.	Shank Type		Each		Each
1 Flute







				82° Countersink Angle

				1/8"	1/8"	1 1/4"	Round	0000000	000000	00000000	000000


				3/16"	3/16"	1 3/8"	Round	0000000	00000	00000000	00000
				1/4"	1/4"	1 1/2"	Round	0000000	00000	00000000	00000
				3/8"	1/4"	1 3/4"	Round	0000000	00000	00000000	00000
				1/2"	1/4"	2"	Round	0000000	00000	00000000	00000
				5/8"	3/8"	2 1/4"	Round	0000000	00000	00000000	00000
				3/4"	1/2"	2 5/8"	Round	0000000	00000	00000000	00000
				1"	1/2"	2 3/4"	Round	0000000	00000	00000000	00000
				1 1/4"	1/2"	2 3/4"	Round	0000000	00000	00000000	000000
				1 1/2"	3/4"	2 7/8"	Round	0000000	000000	00000000	000000
				1 3/4"	3/4"	3"	Round	0000000	000000	00000000	000000


				2"	3/4"	3 1/4"	Round	0000000	000000	00000000	000000




						90° Countersink Angle

						1/8"	1/8"	1 1/4"	Round	0000000	00000	00000000	00000


						3/16"	3/16"	1 3/8"	Round	0000000	00000	00000000	00000
						1/4"	1/4"	1 1/2"	Round	0000000	00000	00000000	00000
						3/8"	1/4"	1 3/4"	Round	0000000	00000	00000000	00000
						1/2"	1/4"	2"	Round	0000000	00000	00000000	00000
						5/8"	3/8"	2 1/4"	Round	0000000	00000	00000000	00000
						3/4"	1/2"	2 5/8"	Round	0000000	00000	00000000	00000
						1"	1/2"	2 3/4"	Round	0000000	00000	00000000	00000
						1 1/4"	1/2"	2 3/4"	Round	0000000	00000	00000000	000000
						1 1/2"	3/4"	2 7/8"	Round	0000000	000000	00000000	000000
						1 3/4"	3/4"	3"	Round	0000000	000000	00000000	000000


						2"	3/4"	3 1/4"	Round	0000000	000000	00000000	000000

Cobalt Steel

1 Flute

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

Titanium Nitride (TiN) Coated—Withstand heat, corrosion, and abrasion better than uncoated and black oxide countersinks, so they stay sharp over longer periods.

	Dia.				Uncoated		Titanium Nitride (TiN) Coated
	Body	Shank	Overall Lg.	Shank Type		Each		Each
1 Flute







				82° Countersink Angle

				1/8"	1/8"	1 1/2"	Round	00000000	000000	00000000	000000


				3/16"	3/16"	1 1/2"	Round	00000000	00000	00000000	00000
				1/4"	1/4"	2"	Round	00000000	00000	00000000	00000
				3/8"	1/4"	2"	Round	00000000	00000	00000000	00000
				1/2"	3/8"	2"	Round	00000000	00000	00000000	00000
				5/8"	3/8"	2 1/4"	Round	00000000	00000	00000000	00000
				3/4"	1/2"	2 3/4"	Round	00000000	00000	00000000	00000
				1"	1/2"	2 3/4"	Round	00000000	00000	00000000	00000
				1 1/4"	1/2"	3"	Round	00000000	00000	00000000	000000
				1 1/2"	3/4"	3 1/2"	Round	00000000	000000	00000000	000000
				1 3/4"	3/4"	4 1/4"	Round	00000000	000000	00000000	000000


				2"	3/4"	3 3/4"	Round	00000000	000000	00000000	000000




						90° Countersink Angle

						1/8"	1/8"	1 1/2"	Round	00000000	00000	00000000	00000


						3/16"	3/16"	1 1/2"	Round	00000000	00000	00000000	00000
						1/4"	1/4"	2"	Round	00000000	00000	00000000	00000
						3/8"	1/4"	2"	Round	00000000	00000	00000000	00000
						1/2"	3/8"	2"	Round	00000000	00000	00000000	00000
						5/8"	3/8"	2 1/4"	Round	00000000	00000	00000000	00000
						3/4"	1/2"	2 3/4"	Round	00000000	00000	00000000	00000
						1"	1/2"	2 3/4"	Round	00000000	00000	00000000	00000
						1 1/4"	1/2"	3"	Round	00000000	00000	00000000	000000
						1 1/2"	3/4"	3 1/2"	Round	00000000	000000	00000000	000000
						1 3/4"	3/4"	4 1/4"	Round	00000000	000000	00000000	000000


						2"	3/4"	3 3/4"	Round	00000000	000000	00000000	000000

Carbide

1 Flute

The hardest and most wear-resistant countersinks you can buy. They stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. They last 10 to 20 times longer than their closest alternative, cobalt steel. Carbide can be brittle, however, so use a rigid machine tool holder to prevent breakage.

Titanium Carbon Nitride (TiCN) Coated—The hard, smooth finish prevents chipping and wear and reduces friction to keep material from building up.

Titanium Aluminum Nitride (TiAlN) Coated—Harder than TiCN, these countersinks cut without chipping in iron, titanium, and other metals as hard as Rockwell C50.

Aluminum Titanium Nitride (AlTiN) Coated—Our hardest and most wear-resistant countersinks, these cut through metals as hard as Rockwell C70 without losing their sharp cutting edges.

	Dia.				Uncoated		Titanium Carbon Nitride (TiCN) Coated		Titanium Aluminum Nitride (TiAlN) Coated		Aluminum Titanium Nitride (AlTiN) Coated
	Body	Shank	Overall Lg.	Shank Type		Each		Each		Each		Each
1 Flute







				82° Countersink Angle

				1/8"	1/8"	1 1/2"	Round	0000000	000000	00000000	000000	00000000	000000	00000000	000000


				3/16"	3/16"	2"	Round	0000000	00000	00000000	00000	00000000	00000	00000000	00000
				1/4"	1/4"	2"	Round	000000	00000	00000000	00000	00000000	00000	0000000	00000
				5/16"	1/4"	2 5/8"	Round	0000000	00000	00000000	00000	00000000	00000	00000000	00000
				3/8"	1/4"	2 5/8"	Round	0000000	00000	00000000	00000	00000000	00000	00000000	00000
				1/2"	1/4"	2 5/8"	Round	000000	00000	00000000	00000	00000000	00000	00000000	00000
				5/8"	3/8"	2 3/4"	Round	0000000	00000	00000000	00000	00000000	00000	00000000	00000
				3/4"	3/8"	2 3/4"	Round	000000	000000	00000000	000000	00000000	000000	00000000	000000
				1"	1/2"	3"	Round	000000	000000	00000000	000000	00000000	000000	0000000	000000
				1 1/4"	3/4"	3 1/4"	Round	0000000	000000	00000000	000000	00000000	000000	00000000	000000




						90° Countersink Angle

						1/8"	1/8"	1 1/2"	Round	0000000	00000	00000000	00000	00000000	00000	00000000	00000


						3/16"	3/16"	2"	Round	0000000	00000	00000000	00000	00000000	00000	00000000	00000
						1/4"	1/4"	2"	Round	000000	00000	00000000	00000	00000000	00000	00000000	00000
						5/16"	1/4"	2 5/8"	Round	0000000	00000	00000000	00000	00000000	00000	00000000	00000
						3/8"	1/4"	2 5/8"	Round	0000000	00000	00000000	00000	00000000	00000	00000000	00000
						1/2"	1/4"	2 5/8"	Round	0000000	00000	00000000	00000	00000000	00000	00000000	00000
						5/8"	3/8"	2 3/4"	Round	0000000	00000	00000000	00000	00000000	00000	00000000	00000
						3/4"	3/8"	2 3/4"	Round	0000000	000000	00000000	000000	00000000	000000	00000000	000000
						1"	1/2"	3"	Round	0000000	000000	00000000	000000	00000000	000000	00000000	000000
						1 1/4"	3/4"	3 1/4"	Round	0000000	000000	00000000	000000	00000000	000000	00000000	000000

Countersinks for Rivets

Cut a cone-shaped opening in a hole to install your rivet flush with the surface. The 100°, 110°, and 120° countersink angles are compatible with standard rivet heads.

High-Speed Steel

1 Flute

These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.

Titanium Nitride (TiN) Coated—Withstand heat, corrosion, and abrasion better than uncoated and black oxide countersinks, so they stay sharp over longer periods.

	Dia.				Uncoated		Titanium Nitride (TiN) Coated
	Body	Shank	Overall Lg.	Shank Type		Each		Each
1 Flute







				100° Countersink Angle

				1/8"	1/8"	1 1/4"	Round	0000000	000000	00000000	000000


				3/16"	3/16"	1 3/8"	Round	0000000	00000	00000000	00000
				1/4"	1/4"	1 1/2"	Round	0000000	00000	00000000	00000
				3/8"	1/4"	1 3/4"	Round	0000000	00000	00000000	00000
				1/2"	1/4"	2"	Round	0000000	00000	00000000	00000
				5/8"	3/8"	2 1/4"	Round	0000000	00000	00000000	00000
				3/4"	1/2"	2 5/8"	Round	0000000	00000	00000000	00000
				1"	1/2"	2 3/4"	Round	0000000	00000	00000000	00000
				1 1/4"	1/2"	2 3/4"	Round	0000000	00000	00000000	000000
				1 1/2"	3/4"	2 7/8"	Round	0000000	000000	00000000	000000
				1 3/4"	3/4"	3"	Round	0000000	000000	00000000	000000


				2"	3/4"	3 1/4"	Round	0000000	000000	00000000	000000




						120° Countersink Angle

						1/8"	1/8"	1 1/4"	Round	00000000	00000	00000000	00000


						3/16"	3/16"	1 3/8"	Round	00000000	00000	00000000	00000
						1/4"	1/4"	1 1/2"	Round	00000000	00000	00000000	00000
						3/8"	1/4"	1 3/4"	Round	00000000	00000	00000000	00000
						1/2"	1/4"	2"	Round	00000000	00000	00000000	00000
						5/8"	3/8"	2 1/4"	Round	00000000	00000	00000000	00000
						3/4"	1/2"	2 5/8"	Round	00000000	00000	00000000	00000
						1"	1/2"	2 3/4"	Round	00000000	00000	00000000	00000
						1 1/4"	1/2"	2 3/4"	Round	00000000	00000	00000000	000000
						1 1/2"	3/4"	2 7/8"	Round	00000000	000000	00000000	000000
						1 3/4"	3/4"	3"	Round	00000000	000000	00000000	000000


						2"	3/4"	3 1/4"	Round	00000000	000000	00000000	000000

Cobalt Steel

1 Flute

Titanium Nitride (TiN) Coated—Withstand heat, corrosion, and abrasion better than uncoated and black oxide countersinks, so they stay sharp over longer periods.

	Dia.				Uncoated		Titanium Nitride (TiN) Coated
	Body	Shank	Overall Lg.	Shank Type		Each		Each
1 Flute







				100° Countersink Angle

				1/8"	1/8"	1 1/2"	Round	00000000	00000	00000000	000000


				3/16"	3/16"	1 1/2"	Round	00000000	00000	00000000	00000
				1/4"	1/4"	2"	Round	00000000	00000	00000000	00000
				3/8"	1/4"	2"	Round	00000000	00000	00000000	00000
				1/2"	3/8"	2"	Round	00000000	00000	00000000	00000
				5/8"	3/8"	2 1/4"	Round	00000000	00000	00000000	00000
				3/4"	1/2"	2 3/4"	Round	00000000	00000	00000000	00000
				1"	1/2"	2 3/4"	Round	00000000	00000	00000000	00000
				1 1/4"	1/2"	3"	Round	00000000	00000	00000000	000000
				1 1/2"	3/4"	3 1/2"	Round	———	0	00000000	000000




						120° Countersink Angle

						1/8"	1/8"	1 1/2"	Round	00000000	0000	00000000	00000


						3/16"	3/16"	1 1/2"	Round	———	0	00000000	00000
						1/4"	1/4"	2"	Round	00000000	00000	00000000	00000
						3/8"	1/4"	2"	Round	00000000	00000	00000000	00000
						1/2"	3/8"	2"	Round	00000000	00000	00000000	00000
						5/8"	3/8"	2 1/4"	Round	00000000	00000	00000000	00000
						3/4"	1/2"	2 3/4"	Round	00000000	00000	00000000	00000
						1"	1/2"	2 3/4"	Round	00000000	00000	00000000	00000
						1 1/4"	1/2"	3"	Round	00000000	00000	00000000	000000
						1 1/2"	3/4"	3 1/2"	Round	00000000	000000	00000000	000000
						1 3/4"	3/4"	4 1/4"	Round	———	0	00000000	000000

Carbide

1 Flute

Titanium Carbon Nitride (TiCN) Coated—The hard, smooth finish prevents chipping and wear and reduces friction to keep material from building up.

Titanium Aluminum Nitride (TiAlN) Coated—Harder than TiCN, these countersinks cut without chipping in iron, titanium, and other metals as hard as Rockwell C50.

Aluminum Titanium Nitride (AlTiN) Coated—Our hardest and most wear-resistant countersinks, these cut through metals as hard as Rockwell C70 without losing their sharp cutting edges.

	Dia.				Uncoated		Titanium Carbon Nitride (TiCN) Coated		Titanium Aluminum Nitride (TiAlN) Coated		Aluminum Titanium Nitride (AlTiN) Coated
	Body	Shank	Overall Lg.	Shank Type		Each		Each		Each		Each
1 Flute







				100° Countersink Angle

				1/8"	1/8"	1 1/2"	Round	00000000	000000	00000000	000000	00000000	000000	00000000	000000


				3/16"	3/16"	2"	Round	00000000	00000	00000000	00000	00000000	00000	00000000	00000
				1/4"	1/4"	2"	Round	00000000	00000	00000000	00000	00000000	00000	00000000	00000
				5/16"	1/4"	2 5/8"	Round	0000000	00000	00000000	00000	00000000	00000	00000000	00000
				3/8"	1/4"	2 5/8"	Round	00000000	00000	00000000	00000	00000000	00000	00000000	00000
				1/2"	1/4"	2 5/8"	Round	00000000	00000	00000000	00000	00000000	00000	0000000	00000
				5/8"	3/8"	2 3/4"	Round	00000000	00000	00000000	00000	00000000	00000	00000000	00000
				3/4"	3/8"	2 3/4"	Round	00000000	000000	00000000	000000	00000000	000000	00000000	000000
				1"	1/2"	3"	Round	00000000	000000	00000000	000000	00000000	000000	00000000	000000
				1 1/4"	3/4"	3 1/4"	Round	00000000	000000	00000000	000000	00000000	000000	00000000	000000

Countersink Sets for Screws

Cut cone-shaped recesses for screws of various diameters so the screw head sit flush with the surface. Choose an 82° countersink angle for inch screws or a 90° countersink angle for metric screws.

High-Speed Steel—These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.

Carbide—The hardest and most wear-resistant countersinks you can buy. They stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. They last 10 to 20 times longer than their closest alternative, cobalt steel. Carbide can be brittle, however, so use a rigid machine tool holder to prevent breakage.

Titanium Nitride (TiN) Coated—Withstand heat, corrosion, and abrasion better than uncoated and black oxide countersinks, so they stay sharp over longer periods.

Titanium Carbon Nitride (TiCN) Coated—The hard, smooth finish prevents chipping and wear and reduces friction to keep material from building up.

Titanium Aluminum Nitride (TiAlN) Coated—Harder than TiCN, these countersinks cut without chipping in iron, titanium, and other metals as hard as Rockwell C50.

Aluminum Titanium Nitride (AlTiN) Coated—Our hardest and most wear-resistant countersinks, these cut through metals as hard as Rockwell C70 without losing their sharp cutting edges.

							82° Countersink Angle		90° Countersink Angle
	No. of Flutes	Body Dia. Included	No. of Pieces	Finish	Shank Type	Container Type		Each		Each
High-Speed Steel



		1	1/4", 1/2", 3/4", 1"	4	Titanium Nitride (TiN) Coated	Round	Plastic Case	00000000	0000000	00000000	0000000


		1	1/4", 3/8", 1/2", 3/4", 1"	5	Uncoated	Round	Plastic Case	0000000	000000	0000000	000000


		Carbide



				1	1/4", 3/8", 1/2", 5/8", 3/4"	5	Uncoated	Round	Metal Case	0000000	000000	0000000	000000


				1	1/4", 3/8", 1/2", 5/8", 3/4"	5	Titanium Carbon Nitride (TiCN) Coated	Round	Metal Case	00000000	000000	00000000	000000
				1	1/4", 3/8", 1/2", 5/8", 3/4"	5	Titanium Aluminum Nitride (TiAlN) Coated	Round	Metal Case	00000000	000000	00000000	000000
				1	1/4", 3/8", 1/2", 5/8", 3/4"	5	Aluminum Titanium Nitride (AlTiN) Coated	Round	Metal Case	00000000	000000	00000000	000000

Carbide-Insert Countersinks for Screws

Your best bet for countersinking dozens or even hundreds of holes economically. When the blade begins to wear, rotate the insert to expose a fresh cutting edge. Once all the edges are worn, pop on a new insert instead of sharpening or throwing away your countersink.

Carbide

With Square

Insert

	Countersinks											Replacement Screws
						Insert				Uncoated
	Shank Dia.	For Hole Dia.	For Min. Hole Dia.	Overall Lg.	Shank Type	Shape	Code	Size	Thk.		Each		Each
1 Flute







				82° Countersink Angle

				1/2"	1/4" to 3/4"	1/4"	2 3/8"	Round	Triangle	TPGH-321	3/8"	1/8"	00000000	0000000	00000000	00000


				1/2"	1/2" to 1 3/4"	1/2"	2 3/8"	Round	Square	SPGH-433	1/2"	3/16"	00000000	000000	00000000	0000
				3/4"	1 1/4" to 2 1/2"	1 1/4"	2 3/8"	Round	Square	SPGH-433	1/2"	3/16"	00000000	000000	00000000	0000




						90° Countersink Angle

						1/2"	1/4" to 3/4"	1/4"	2 3/8"	Round	Triangle	TPGH-321	3/8"	1/8"	00000000	000000	00000000	0000


						1/2"	1/2" to 1 3/4"	1/2"	2 3/8"	Round	Square	SPGH-433	1/2"	3/16"	00000000	000000	00000000	0000
						3/4"	1 1/4" to 2 1/2"	1 1/4"	2 3/8"	Round	Square	SPGH-433	1/2"	3/16"	00000000	000000	00000000	0000

Replacement Carbide Inserts

Individual Carbide

Insert Case

Inserts sold individually come packed in a clear plastic case to protect cutting edges during shipment. Inserts sold in packs come factory sealed from the manufacturer for maximum traceability.

Titanium Nitride (TiN)-Coated Carbide—Withstand heat, corrosion, and abrasion better than uncoated inserts, so they stay sharp over longer periods.

		Each		Package
Material	Insert Shape		Each	Pkg. Qty.		Pkg.
Uncoated Carbide	Triangle	00000000	00000	10	000000000	000000
Uncoated Carbide	Square	00000000	00000	10	000000000	000000
Titanium Nitride (TiN)-Coated Carbide	Triangle	00000000	00000	10	000000000	00000
Titanium Nitride (TiN)-Coated Carbide	Square	00000000	00000	10	000000000	000000

Countersinks for Lathe Centers

Keep your workpiece aligned as it spins between lathe centers. These countersinks match the 60° angle on both rotating and stationary centers.

High-Speed Steel

1 Flute

These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.

Titanium Nitride (TiN) Coated—Withstand heat, corrosion, and abrasion better than uncoated and black oxide countersinks, so they stay sharp over longer periods.

	Dia.				Uncoated		Titanium Nitride (TiN) Coated
	Body	Shank	Overall Lg.	Shank Type		Each		Each
1 Flute







				60° Countersink Angle

				1/8"	1/8"	1 1/4"	Round	0000000	000000	00000000	000000


				3/16"	3/16"	1 3/8"	Round	0000000	00000	00000000	00000
				1/4"	1/4"	1 1/2"	Round	0000000	00000	00000000	00000
				3/8"	1/4"	1 3/4"	Round	0000000	00000	00000000	00000
				1/2"	1/4"	2"	Round	0000000	00000	00000000	00000
				5/8"	3/8"	2 1/4"	Round	0000000	00000	00000000	00000
				3/4"	1/2"	2 5/8"	Round	0000000	00000	00000000	00000
				1"	1/2"	2 3/4"	Round	0000000	00000	00000000	00000
				1 1/4"	1/2"	2 3/4"	Round	0000000	00000	00000000	000000
				1 1/2"	3/4"	2 7/8"	Round	0000000	000000	00000000	000000
				1 3/4"	3/4"	3"	Round	0000000	000000	00000000	000000


				2"	3/4"	3 1/4"	Round	0000000	000000	00000000	000000

Cobalt Steel

1 Flute

Titanium Nitride (TiN) Coated—Withstand heat, corrosion, and abrasion better than uncoated and black oxide countersinks, so they stay sharp over longer periods.

	Dia.				Uncoated		Titanium Nitride (TiN) Coated
	Body	Shank	Overall Lg.	Shank Type		Each		Each
1 Flute







				60° Countersink Angle

				1/8"	1/8"	1 1/2"	Round	00000000	000000	00000000	000000


				3/16"	3/16"	1 1/2"	Round	00000000	00000	00000000	00000
				1/4"	1/4"	2"	Round	00000000	00000	00000000	00000
				3/8"	1/4"	2"	Round	00000000	00000	00000000	00000
				1/2"	3/8"	2"	Round	00000000	00000	00000000	00000
				5/8"	3/8"	2 1/4"	Round	00000000	00000	00000000	00000
				3/4"	1/2"	2 3/4"	Round	00000000	00000	00000000	00000
				1"	1/2"	2 3/4"	Round	00000000	00000	00000000	00000
				1 1/4"	1/2"	3"	Round	00000000	00000	00000000	000000
				1 1/2"	3/4"	3 1/2"	Round	00000000	000000	00000000	000000
				2"	3/4"	3 3/4"	Round	———	0	00000000	000000

Carbide

1 Flute

Titanium Carbon Nitride (TiCN) Coated—The hard, smooth finish prevents chipping and wear and reduces friction to keep material from building up.

Titanium Aluminum Nitride (TiAlN) Coated—Harder than TiCN, these countersinks cut without chipping in iron, titanium, and other metals as hard as Rockwell C50.

Aluminum Titanium Nitride (AlTiN) Coated—Our hardest and most wear-resistant countersinks, these cut through metals as hard as Rockwell C70 without losing their sharp cutting edges.

	Dia.				Uncoated		Titanium Carbon Nitride (TiCN) Coated		Titanium Aluminum Nitride (TiAlN) Coated		Aluminum Titanium Nitride (AlTiN) Coated
	Body	Shank	Overall Lg.	Shank Type		Each		Each		Each		Each
1 Flute







				60° Countersink Angle

				1/8"	1/8"	1 1/2"	Round	0000000	000000	00000000	000000	00000000	000000	00000000	000000


				3/16"	3/16"	2"	Round	0000000	00000	00000000	00000	00000000	00000	00000000	00000
				1/4"	1/4"	2"	Round	000000	00000	00000000	00000	00000000	00000	00000000	00000
				5/16"	1/4"	2 5/8"	Round	0000000	00000	00000000	00000	00000000	00000	00000000	00000
				3/8"	1/4"	2 5/8"	Round	0000000	00000	00000000	00000	00000000	00000	00000000	00000
				1/2"	1/4"	2 5/8"	Round	000000	00000	00000000	00000	00000000	00000	00000000	00000
				5/8"	3/8"	2 3/4"	Round	0000000	00000	00000000	00000	00000000	00000	00000000	00000
				3/4"	3/8"	2 3/4"	Round	000000	000000	00000000	000000	00000000	000000	00000000	000000
				1"	1/2"	3"	Round	000000	000000	00000000	000000	00000000	000000	00000000	000000
				1 1/4"	3/4"	3 1/4"	Round	0000000	000000	00000000	000000	00000000	000000	00000000	000000

Countersink Hand Tools

This versatile hand tool countersinks, chamfers, and deburrs in a single pass. If the hole is partially obstructed, the angled shank gives you access from the side. The tool comes in a plastic case with five countersinks to create cone-shaped openings for screw heads of different diameters.

High-Speed Steel—These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.

								90° Countersink Angle
	No. of Flutes	Body Dia. Included	No. of Pieces	Finish	Includes	Shank Type	Container Type		Each
High-Speed Steel



		1	1/8", 1/4", 5/16", 3/8"	5	Uncoated	5" Lg. Plastic Handle	Round	Plastic Case	00000000	000000

Replacements for Countersinks

		Each
5" Long Plastic Handle	00000000	00000
1/8" Countersink	00000000	0000
1/4" Countersink	00000000	00000
5/16" Countersink	00000000	00000
3/8" Countersink	00000000	00000

Long-Reach Countersinks for Screws

At around twice the length of our standard countersinks, these give you access to hard-to-reach holes. They're more prone to wobbling than shorter countersinks, so consider using a drill press or other rigid tool setup.

High-Speed Steel

1 Flute

These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.

	Dia.				Uncoated
	Body	Shank	Overall Lg.	Shank Type		Each
1 Flute







				82° Countersink Angle

				1/8"	1/8"	4"	Round	0000000	000000


				3/16"	3/16"	4"	Round	0000000	00000
				1/4"	1/4"	6"	Round	0000000	00000
				5/16"	5/16"	6"	Round	0000000	00000
				3/8"	3/8"	6"	Round	0000000	00000
				1/2"	3/8"	6"	Round	0000000	00000
				5/8"	3/8"	6"	Round	0000000	00000
				3/4"	1/2"	6"	Round	0000000	00000
				1"	1/2"	6"	Round	0000000	00000

Countersinks with Two Countersinking Ends for Screws

When one end starts to wear, flip the tool around for a fresh cutting edge.

High-Speed Steel

1 Flute

These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.

	Dia.				Uncoated
	Body	Shank	Overall Lg.	Shank Type		Each
1 Flute







				82° Countersink Angle

				1/8"	1/8"	1 1/2"	Round	000000000	000000


				3/16"	3/16"	2"	Round	000000000	00000
				1/4"	1/4"	2"	Round	000000000	00000
				5/16"	5/16"	2 1/2"	Round	000000000	00000
				3/8"	3/8"	2 1/2"	Round	000000000	00000
				1/2"	1/2"	3"	Round	000000000	00000
				5/8"	5/8"	3 1/2"	Round	000000000	00000




						90° Countersink Angle

						1/8"	1/8"	1 1/2"	Round	000000000	00000


						3/16"	3/16"	2"	Round	000000000	00000
						1/4"	1/4"	2"	Round	000000000	00000
						5/16"	5/16"	2 1/2"	Round	000000000	00000
						3/8"	3/8"	2 1/2"	Round	000000000	00000
						1/2"	1/2"	3"	Round	000000000	00000

Carbide-Insert Countersinks for Lathe Centers

Carbide

With Square

Insert

	Countersinks											Replacement Screws
						Insert				Uncoated
	Shank Dia.	For Hole Dia.	For Min. Hole Dia.	Overall Lg.	Shank Type	Shape	Code	Size	Thk.		Each		Each
1 Flute







				60° Countersink Angle

				1/2"	1/4" to 3/4"	1/4"	2 3/8"	Round	Triangle	TPGH-321	3/8"	1/8"	00000000	0000000	00000000	00000


				1/2"	1/2" to 1 3/4"	1/2"	2 3/4"	Round	Square	SPGH-433	1/2"	3/16"	00000000	000000	00000000	0000
				3/4"	1 1/4" to 2 1/2"	1 1/4"	2 3/4"	Round	Square	SPGH-433	1/2"	3/16"	00000000	000000	00000000	0000

Replacement Carbide Inserts

Individual Carbide

Insert Case

Titanium Nitride (TiN)-Coated Carbide—Withstand heat, corrosion, and abrasion better than uncoated inserts, so they stay sharp over longer periods.

		Each		Package
Material	Insert Shape		Each	Pkg. Qty.		Pkg.
Uncoated Carbide	Triangle	00000000	00000	10	000000000	000000
Uncoated Carbide	Square	00000000	00000	10	000000000	000000
Titanium Nitride (TiN)-Coated Carbide	Triangle	00000000	00000	10	000000000	00000
Titanium Nitride (TiN)-Coated Carbide	Square	00000000	00000	10	000000000	000000

Carbide-Insert Countersinks for Rivets

Carbide

With Square

Insert

	Countersinks											Replacement Screws
						Insert				Uncoated
	Shank Dia.	For Hole Dia.	For Min. Hole Dia.	Overall Lg.	Shank Type	Shape	Code	Size	Thk.		Each		Each
1 Flute







				100° Countersink Angle

				1/2"	1/4" to 3/4"	1/4"	2 3/8"	Round	Triangle	TPGH-321	3/8"	1/8"	00000000	0000000	00000000	00000


				1/2"	1/2" to 1 3/4"	1/2"	2 3/8"	Round	Square	SPGH-433	1/2"	3/16"	00000000	000000	00000000	0000
				3/4"	1 1/4" to 2 1/2"	1 1/4"	2 3/8"	Round	Square	SPGH-433	1/2"	3/16"	00000000	000000	00000000	0000

Replacement Carbide Inserts

Individual Carbide

Insert Case

Titanium Nitride (TiN)-Coated Carbide—Withstand heat, corrosion, and abrasion better than uncoated inserts, so they stay sharp over longer periods.

		Each		Package
Material	Insert Shape		Each	Pkg. Qty.		Pkg.
Uncoated Carbide	Triangle	00000000	00000	10	000000000	000000
Uncoated Carbide	Square	00000000	00000	10	000000000	000000
Titanium Nitride (TiN)-Coated Carbide	Triangle	00000000	00000	10	000000000	00000
Titanium Nitride (TiN)-Coated Carbide	Square	00000000	00000	10	000000000	000000

Countersink Sets for Lathe Centers

Cut holes for a range of lathe-center diameters. The 60° angle creates a precise recess for both rotating and stationary lathe centers, keeping your workpiece aligned as it spins.

High-Speed Steel—These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.

Titanium Carbon Nitride (TiCN) Coated—The hard, smooth finish prevents chipping and wear and reduces friction to keep material from building up.

Titanium Aluminum Nitride (TiAlN) Coated—Harder than TiCN, these countersinks cut without chipping in iron, titanium, and other metals as hard as Rockwell C50.

Aluminum Titanium Nitride (AlTiN) Coated—Our hardest and most wear-resistant countersinks, these cut through metals as hard as Rockwell C70 without losing their sharp cutting edges.

							60° Countersink Angle
	No. of Flutes	Body Dia. Included	No. of Pieces	Finish	Shank Type	Container Type		Each
High-Speed Steel



		1	1/4", 3/8", 1/2", 3/4", 1"	5	Uncoated	Round	Plastic Case	0000000	0000000


		Carbide



				1	1/4", 3/8", 1/2", 5/8", 3/4"	5	Uncoated	Round	Metal Case	0000000	000000


				1	1/4", 3/8", 1/2", 5/8", 3/4"	5	Titanium Carbon Nitride (TiCN) Coated	Round	Metal Case	00000000	000000
				1	1/4", 3/8", 1/2", 5/8", 3/4"	5	Titanium Aluminum Nitride (TiAlN) Coated	Round	Metal Case	00000000	000000
				1	1/4", 3/8", 1/2", 5/8", 3/4"	5	Aluminum Titanium Nitride (AlTiN) Coated	Round	Metal Case	00000000	000000

Countersink Sets for Rivets

Cut cone-shaped recesses for rivets of various diameters so the head sits flush with the surface.

High-Speed Steel—These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.

Titanium Carbon Nitride (TiCN) Coated—The hard, smooth finish prevents chipping and wear and reduces friction to keep material from building up.

Titanium Aluminum Nitride (TiAlN) Coated—Harder than TiCN, these countersinks cut without chipping in iron, titanium, and other metals as hard as Rockwell C50.

Aluminum Titanium Nitride (AlTiN) Coated—Our hardest and most wear-resistant countersinks, these cut through metals as hard as Rockwell C70 without losing their sharp cutting edges.

							100° Countersink Angle
	No. of Flutes	Body Dia. Included	No. of Pieces	Finish	Shank Type	Container Type		Each
High-Speed Steel



		1	1/4", 3/8", 1/2", 3/4", 1"	5	Uncoated	Round	Plastic Case	00000000	0000000


		Carbide



				1	1/4", 3/8", 1/2", 5/8", 3/4"	5	Uncoated	Round	Metal Case	00000000	000000


				1	1/4", 3/8", 1/2", 5/8", 3/4"	5	Titanium Carbon Nitride (TiCN) Coated	Round	Metal Case	00000000	000000
				1	1/4", 3/8", 1/2", 5/8", 3/4"	5	Titanium Aluminum Nitride (TiAlN) Coated	Round	Metal Case	00000000	000000
				1	1/4", 3/8", 1/2", 5/8", 3/4"	5	Aluminum Titanium Nitride (AlTiN) Coated	Round	Metal Case	00000000	000000