Drill-Point Countersinks

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100 Products

For Cutting

Screw Holes

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

51 products

Rivet Holes

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

32 products

For Cutting

Lathe Center Holes

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

17 products

Material

High-Speed Steel

Make accurate cuts in most materials without chipping or cracking

65 products

Drill-Point Countersinks for Screws

Save time by drilling a pilot hole and countersinking in a single step. These countersinks have a small drill point to drill new pilot holes topped with cone-shaped recesses for screw heads.

High-Speed Steel

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

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

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.

Manufacturer—We source from trusted manufacturers who vet raw materials for purity and use diamond grinding wheels to machine precise edges. This keeps cutting surfaces smooth and free of microscopic burrs. Because our suppliers clean their wheels more often than other manufacturers, each countersink is consistently ground to create uniform holes every time.

	Dia.						Uncoated			Black Oxide
	Body	Shank	Drill Tip Dia.	For Screw Size	Overall Lg.	Shank Type	Mfr.		Each	Mfr.		Each
2 Flutes







				82° Countersink Angle

				5/16"	1/4"	0.127"	No. 5	1 3/4"	Round	Link Industries	28145A41	000000	—	———	0


				5/16"	1/4"	0.140"	No. 6	1 3/4"	Round	Link Industries	28145A42	00000	—	———	0
				7/16"	1/4"	0.166"	No. 8	2"	Round	Link Industries	28145A43	00000	—	———	0
				7/16"	1/4"	0.192"	No. 10	2"	Round	Link Industries	28145A44	00000	—	———	0
				7/16"	1/4"	0.220"	No. 12	2"	Round	Link Industries	28145A45	00000	—	———	0
				1/2"	3/8"	0.252"	1/4"	2 3/8"	Round	Link Industries	28145A46	00000	—	———	0
				5/8"	3/8"	0.315"	5/16"	2 5/8"	Round	Link Industries	28145A47	00000	—	———	0
				3/4"	1/2"	0.378"	3/8"	3"	Round	Link Industries	28145A48	00000	—	———	0




						90° Countersink Angle

						6.35 mm	6.35 mm	3.10 mm	M3	44.44 mm	Round	Link Industries	28145A71	00000	—	———	0


						8.20 mm	6.35 mm	4.10 mm	M4	44.44 mm	Round	Link Industries	28145A72	00000	—	———	0
						11.10 mm	7.93 mm	5.10 mm	M5	50.79 mm	Round	Link Industries	28145A73	00000	—	———	0
						12.70 mm	7.93 mm	6.10 mm	M6	50.79 mm	Round	Link Industries	28145A74	00000	—	———	0
						17.45 mm	11.11 mm	8.10 mm	M8	66.66 mm	Round	Link Industries	28145A75	00000	—	———	0
						20.63 mm	12.7 mm	10.10 mm	M10	76.19 mm	Round	Link Industries	28145A76	00000	—	———	0
						25.40 mm	15.87 mm	12.10 mm	M12	76.19 mm	Round	Link Industries	28145A77	00000	—	———	0


						4 Flutes







										82° Countersink Angle

										1/8"	1/8"	0.041"	—	1 1/2"	Round	—	———	0	Melin Tool	27535A33	000000


										3/16"	3/16"	0.062"	—	1 1/2"	Round	—	———	0	Melin Tool	27535A34	00000
										1/4"	1/4"	0.082"	—	2"	Round	—	———	0	Melin Tool	27535A35	00000
										5/16"	1/4"	0.104"	—	2"	Round	—	———	0	Melin Tool	27535A36	00000
										3/8"	1/4"	0.125"	—	2"	Round	—	———	0	Melin Tool	27535A37	00000
										1/2"	3/8"	0.167"	—	2"	Round	—	———	0	Melin Tool	27535A38	00000
										5/8"	3/8"	0.208"	—	2 1/4"	Round	—	———	0	Melin Tool	27535A39	00000
										3/4"	1/2"	0.250"	—	2 3/4"	Round	—	———	0	Melin Tool	27535A41	00000
										7/8"	1/2"	0.291"	—	2 3/4"	Round	—	———	0	Melin Tool	27535A42	00000
										1"	1/2"	0.333"	—	2 3/4"	Round	—	———	0	Melin Tool	27535A43	00000




												90° Countersink Angle

1/8"												1/8"	0.041"	—	1 1/2"	Round	—	———	0	Melin Tool	27535A44	00000


3/16"	3/16"											0.062"	—	1 1/2"	Round	—	———	0	Melin Tool	27535A45	00000
1/4"	1/4"											0.082"	—	2"	Round	—	———	0	Melin Tool	27535A46	00000
5/16"	1/4"	0.104"										—	2"	Round	—	———	0	Melin Tool	27535A47	00000
3/8"	1/4"	0.125"	—									2"	Round	—	———	0	Melin Tool	27535A48	00000
1/2"	3/8"	0.167"	—									2"	Round	—	———	0	Melin Tool	27535A49	00000
5/8"	3/8"	0.208"	—									2 1/4"	Round	—	———	0	Melin Tool	27535A51	00000
3/4"	1/2"	0.250"	—									2 3/4"	Round	—	———	0	Melin Tool	27535A52	00000
7/8"	1/2"	0.291"	—									2 3/4"	Round	—	———	0	Melin Tool	27535A53	00000
1"	1/2"	0.333"	—									2 3/4"	Round	—	———	0	Melin Tool	27535A54	00000

Drill-Point Countersink Sets for Screws

Save time by drilling and countersinking your pilot hole in one pass for a range of screw sizes. These countersinks have a small drill point to drill new pilot holes topped with cone-shaped recesses for screw heads.

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

							82° Countersink Angle
	No. of Flutes	No. of Pieces	For Screw Size	Finish	Shank Type	Container Type	Mfr.		Each
High-Speed Steel



		2	8	No. 5, No. 6, No. 8, No. 10, No. 12, 1/4", 5/16", 3/8"	Uncoated	Round	Plastic Case	Link Industries	28145A61	0000000

Drill-Point Countersinks for Rivets

Save time by drilling a pilot hole and countersinking in a single step. These countersinks have a small drill point to drill new pilot holes topped with cone-shaped recesses for rivet heads.

High-Speed Steel

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

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

	Dia.					Black Oxide
	Body	Shank	Drill Tip Dia.	Overall Lg.	Shank Type	Mfr.		Each
4 Flutes







				100° Countersink Angle

				1/8"	1/8"	0.041"	1 1/2"	Round	Melin Tool	27535A55	000000


				3/16"	3/16"	0.062"	1 1/2"	Round	Melin Tool	27535A56	00000
				1/4"	1/4"	0.082"	2"	Round	Melin Tool	27535A57	00000
				5/16"	1/4"	0.104"	2"	Round	Melin Tool	27535A58	00000
				3/8"	1/4"	0.125"	2"	Round	Melin Tool	27535A59	00000
				1/2"	3/8"	0.167"	2"	Round	Melin Tool	27535A61	00000
				5/8"	3/8"	0.208"	2 1/4"	Round	Melin Tool	27535A62	00000
				3/4"	1/2"	0.250"	2 3/4"	Round	Melin Tool	27535A63	00000
				7/8"	1/2"	0.291"	2 3/4"	Round	Melin Tool	27535A64	00000
				1"	1/2"	0.333"	2 3/4"	Round	Melin Tool	27535A65	00000




						120° Countersink Angle

						1/8"	1/8"	0.041"	1 1/2"	Round	Melin Tool	27535A77	00000


						3/16"	3/16"	0.062"	1 1/2"	Round	Melin Tool	27535A78	00000
						1/4"	1/4"	0.082"	2"	Round	Melin Tool	27535A79	00000
						5/16"	1/4"	0.104"	2"	Round	Melin Tool	27535A81	00000
						3/8"	1/4"	0.125"	2"	Round	Melin Tool	27535A82	00000
						1/2"	3/8"	0.167"	2"	Round	Melin Tool	27535A83	00000
						5/8"	3/8"	0.208"	2 1/4"	Round	Melin Tool	27535A84	00000
						3/4"	1/2"	0.250"	2 3/4"	Round	Melin Tool	27535A85	00000
						1"	1/2"	0.333"	2 3/4"	Round	Melin Tool	27535A87	00000

Drill-Point Countersinks with Two Countersinking Ends for Screws

When one end starts to wear, flip the tool around for a fresh cutting edge. These countersinks save time by drilling a pilot hole and countersinking in a single step. They have a small drill point to drill new pilot holes topped with cone-shaped recesses for screw heads.

Carbide

4 Flutes

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.

	Dia.					Uncoated
	Body	Shank	Drill Tip Dia.	Overall Lg.	Shank Type	Mfr.		Each
4 Flutes







				82° Countersink Angle

				1/8"	1/8"	0.041"	1 1/2"	Round	Melin Tool	3290A512	000000


				3/16"	3/16"	0.062"	2"	Round	Melin Tool	3290A522	00000
				1/4"	1/4"	0.082"	2"	Round	Melin Tool	3290A532	00000
				5/16"	5/16"	0.104"	2 1/2"	Round	Melin Tool	3290A542	00000
				3/8"	3/8"	0.125"	2 1/2"	Round	Melin Tool	3290A552	00000
				1/2"	1/2"	0.167"	3"	Round	Melin Tool	3290A562	000000
				5/8"	5/8"	0.208"	3 1/2"	Round	Melin Tool	3290A572	000000




						90° Countersink Angle

						1/8"	1/8"	0.041"	1 1/2"	Round	Melin Tool	3290A513	00000


						3/16"	3/16"	0.062"	2"	Round	Melin Tool	3290A523	00000
						1/4"	1/4"	0.082"	2"	Round	Melin Tool	3290A533	00000
						5/16"	5/16"	0.104"	2 1/2"	Round	Melin Tool	3290A543	00000
						3/8"	3/8"	0.125"	2 1/2"	Round	Melin Tool	3290A553	00000
						1/2"	1/2"	0.167"	3"	Round	Melin Tool	3290A563	000000
						5/8"	5/8"	0.208"	3 1/2"	Round	Melin Tool	3290A573	000000
						3/4"	3/4"	0.250"	4"	Round	Melin Tool	3290A583	000000

Drill-Point Countersinks with Two Countersinking Ends for Rivets

When one end starts to wear, flip the tool around for a fresh cutting edge. These countersinks have a small drill point to drill new pilot holes topped with cone-shaped recesses for rivet heads.

Carbide

4 Flutes

	Dia.					Uncoated
	Body	Shank	Drill Tip Dia.	Overall Lg.	Shank Type	Mfr.		Each
4 Flutes







				100° Countersink Angle

				1/8"	1/8"	0.041"	1 1/2"	Round	Melin Tool	3290A514	000000


				3/16"	3/16"	0.062"	2"	Round	Melin Tool	3290A524	00000
				1/4"	1/4"	0.082"	2"	Round	Melin Tool	3290A534	00000
				5/16"	5/16"	0.104"	2 1/2"	Round	Melin Tool	3290A544	00000
				3/8"	3/8"	0.125"	2 1/2"	Round	Melin Tool	3290A554	00000
				1/2"	1/2"	0.167"	3"	Round	Melin Tool	3290A564	000000




						120° Countersink Angle

						1/8"	1/8"	0.041"	1 1/2"	Round	Melin Tool	3290A516	00000


						3/16"	3/16"	0.062"	2"	Round	Melin Tool	3290A526	00000
						1/4"	1/4"	0.082"	2"	Round	Melin Tool	3290A536	00000
						5/16"	5/16"	0.104"	2 1/2"	Round	Melin Tool	3290A546	00000
						3/8"	3/8"	0.125"	2 1/2"	Round	Melin Tool	3290A556	00000
						1/2"	1/2"	0.167"	3"	Round	Melin Tool	3290A566	000000
						3/4"	3/4"	0.250"	4"	Round	Melin Tool	3290A586	000000

Drill-Point Countersinks for Lathe Centers

No need to drill or punch a starter hole—a sharp point guides the cutting edges straight into your workpiece. The 60° angle creates a precise recess for both rotating and stationary lathe centers, so the workpiece stays aligned as it spins.

High-Speed Steel

4 Flutes

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

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

	Dia.					Black Oxide
	Body	Shank	Drill Tip Dia.	Overall Lg.	Shank Type	Mfr.		Each
4 Flutes







				60° Countersink Angle

				1/8"	1/8"	0.041"	1 1/2"	Round	Melin Tool	27535A22	000000


				3/16"	3/16"	0.062"	1 1/2"	Round	Melin Tool	27535A23	00000
				1/4"	1/4"	0.082"	2"	Round	Melin Tool	27535A24	00000
				5/16"	1/4"	0.104"	2"	Round	Melin Tool	27535A25	00000
				3/8"	1/4"	0.125"	2"	Round	Melin Tool	27535A26	00000
				1/2"	3/8"	0.167"	2"	Round	Melin Tool	27535A27	00000
				5/8"	3/8"	0.208"	2 1/4"	Round	Melin Tool	27535A28	00000
				3/4"	1/2"	0.250"	2 3/4"	Round	Melin Tool	27535A29	00000
				7/8"	1/2"	0.291"	2 3/4"	Round	Melin Tool	27535A31	00000
				1"	1/2"	0.333"	2 3/4"	Round	Melin Tool	27535A32	00000

Drill-Point Countersinks with Two Countersinking Ends for Lathe Centers

When one end starts to wear, flip the tool around for a fresh cutting edge. A sharp point on these countersinks guides the cutting edges straight into your workpiece, so you don't have to drill or punch a starter hole first. The 60° angle creates a precise recess for both rotating and stationary lathe centers, keeping the workpiece aligned as it spins.

Carbide

4 Flutes

	Dia.					Uncoated
	Body	Shank	Drill Tip Dia.	Overall Lg.	Shank Type	Mfr.		Each
4 Flutes







				60° Countersink Angle

				1/8"	1/8"	0.041"	1 1/2"	Round	Melin Tool	3290A511	000000


				3/16"	3/16"	0.062"	2"	Round	Melin Tool	3290A521	00000
				1/4"	1/4"	0.082"	2"	Round	Melin Tool	3290A531	00000
				5/16"	5/16"	0.104"	2 1/2"	Round	Melin Tool	3290A541	00000
				3/8"	3/8"	0.125"	2 1/2"	Round	Melin Tool	3290A551	00000
				1/2"	1/2"	0.167"	3"	Round	Melin Tool	3290A561	000000
				3/4"	3/4"	0.250"	4"	Round	Melin Tool	3290A581	000000