Knurled-Cup Point Set Screws

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171 Products

Serrated-Locking Steel Cup-Tip Set Screws

No wiggle, no wobble. Unlike standard cup tips, the knurled edges on these screws dig deeper into shafts and other materials. With a better grip, they're less likely to loosen when securing collars, gears, and pulleys that experience vibration. Made of alloy steel, they're strong enough to hold components without wearing down.

Black-Oxide Alloy Steel—These screws have a dark matte finish that offers minimal corrosion resistance, so they're best for dry environments.

	Lg.	Drive Size	Hardness	Specs. Met	Pkg. Qty.		Pkg.
Black-Oxide Alloy Steel







				4-40

				1/8"	0.050"	Rockwell C45	ASME B18.3	100	90289A103	000000


				1/4"	0.050"	Rockwell C45	ASME B18.3	100	90289A106	00000
				3/8"	0.050"	Rockwell C45	ASME B18.3	100	90289A109	00000
				1/2"	0.050"	Rockwell C45	ASME B18.3	50	90289A112	00000




						4-48

						1/8"	0.050"	Rockwell C45	ASME B18.3	50	90289A130	00000




								5-40

								1/8"	1/16"	Rockwell C45	ASME B18.3	100	90289A121	00000


								3/16"	1/16"	Rockwell C45	ASME B18.3	100	90289A123	00000
								1/4"	1/16"	Rockwell C45	ASME B18.3	100	90289A124	00000
								5/16"	1/16"	Rockwell C45	ASME B18.3	100	90289A125	00000




										6-32

										1/8"	1/16"	Rockwell C45	ASME B18.3	100	90289A142	00000


										3/16"	1/16"	Rockwell C45	ASME B18.3	100	90289A143	00000
										1/4"	1/16"	Rockwell C45	ASME B18.3	100	90289A144	00000




												6-40

												1/8"	1/16"	Rockwell C45	ASME B18.3	50	90289A160	00000


												3/16"	1/16"	Rockwell C45	ASME B18.3	50	90289A161	00000
												1/4"	1/16"	Rockwell C45	ASME B18.3	50	90289A162	00000




														8-32

														1/8"	5/64"	Rockwell C45	ASME B18.3	100	90289A188	00000


3/16"	5/64"													Rockwell C45	ASME B18.3	100	90289A189	00000
1/4"	5/64"													Rockwell C45	ASME B18.3	100	90289A190	00000
5/16"	5/64"													Rockwell C45	ASME B18.3	100	90289A191	00000
3/8"	5/64"													Rockwell C45	ASME B18.3	100	90289A192	00000
7/16"	5/64"	Rockwell C45												ASME B18.3	25	90289A193	00000
1/2"	5/64"	Rockwell C45	ASME B18.3											50	90289A194	0000
3/4"	5/64"	Rockwell C45	ASME B18.3											50	90289A197	00000
1"	5/64"	Rockwell C45	ASME B18.3											50	90289A199	00000




		10-24

		1/8"	3/32"											Rockwell C45	ASME B18.3	25	90289A235	00000


		3/16"	3/32"	Rockwell C45										ASME B18.3	50	90289A237	00000
		1/4"	3/32"	Rockwell C45	ASME B18.3									100	90289A238	00000
		5/16"	3/32"	Rockwell C45	ASME B18.3									100	90289A239	00000
		3/8"	3/32"	Rockwell C45	ASME B18.3									50	90289A240	00000
		1/2"	3/32"	Rockwell C45	ASME B18.3									50	90289A242	00000




				10-32

				1/8"	3/32"	Rockwell C45	ASME B18.3							25	90289A335	0000


				3/16"	3/32"	Rockwell C45	ASME B18.3							100	90289A337	00000
				1/4"	3/32"	Rockwell C45	ASME B18.3							100	90289A338	00000
				3/8"	3/32"	Rockwell C45	ASME B18.3							100	90289A340	00000
				7/16"	3/32"	Rockwell C45	ASME B18.3							50	90289A341	00000
				1/2"	3/32"	Rockwell C45	ASME B18.3							50	90289A342	00000
				5/8"	3/32"	Rockwell C45	ASME B18.3							50	90289A344	0000




						1/4"-20

						3/16"	1/8"	Rockwell C45	ASME B18.3					50	90289A532	00000


						1/4"	1/8"	Rockwell C45	ASME B18.3					50	90289A533	00000
						5/16"	1/8"	Rockwell C45	ASME B18.3					100	90289A534	00000
						3/8"	1/8"	Rockwell C45	ASME B18.3					100	90289A535	00000
						7/16"	1/8"	Rockwell C45	ASME B18.3	50				90289A536	00000
						1/2"	1/8"	Rockwell C45	ASME B18.3	50	90289A537			00000
						5/8"	1/8"	Rockwell C45	ASME B18.3	50	90289A539			00000
						3/4"	1/8"	Rockwell C45	ASME B18.3	50	90289A540			00000
						7/8"	1/8"	Rockwell C45	ASME B18.3	25	90289A541			0000
						1"	1/8"	Rockwell C45	ASME B18.3	25	90289A542			00000
						1 1/2"	1/8"	Rockwell C45	ASME B18.3	10	90289A546			00000


						2"	1/8"	Rockwell C45	ASME B18.3	10	90289A550			00000




								1/4"-28

								3/16"	1/8"	Rockwell C45	ASME B18.3	50	90289A350	00000


								1/4"	1/8"	Rockwell C45	ASME B18.3	50	90289A351	00000
								5/16"	1/8"	Rockwell C45	ASME B18.3	50	90289A352	00000
								3/8"	1/8"	Rockwell C45	ASME B18.3	50	90289A353	00000
								1/2"	1/8"	Rockwell C45	ASME B18.3	50	90289A559	00000
								3/4"	1/8"	Rockwell C45	ASME B18.3	50	90289A561	00000




								5/16"-18

								1/4"	5/32"	Rockwell C45	ASME B18.3	100	90289A574	00000


								5/16"	5/32"	Rockwell C45	ASME B18.3	50	90289A575	00000
								3/8"	5/32"	Rockwell C45	ASME B18.3	50	90289A576	00000
								7/16"	5/32"	Rockwell C45	ASME B18.3	25	90289A577	00000
								1/2"	5/32"	Rockwell C45	ASME B18.3	50	90289A578	00000
								5/8"	5/32"	Rockwell C45	ASME B18.3	50	90289A580	00000
								3/4"	5/32"	Rockwell C45	ASME B18.3	25	90289A582	0000
		1"						5/32"	Rockwell C45	ASME B18.3	25	90289A584	0000
		1 1/2"	5/32"					Rockwell C45	ASME B18.3	10	90289A587	0000
		2"	5/32"					Rockwell C45	ASME B18.3	5	90289A591	0000




								5/16"-24

								1/4"	5/32"	Rockwell C45	ASME B18.3	50	90289A358	00000


								5/16"	5/32"	Rockwell C45	ASME B18.3	50	90289A359	00000
								3/8"	5/32"	Rockwell C45	ASME B18.3	50	90289A360	00000
								1/2"	5/32"	Rockwell C45	ASME B18.3	50	90289A361	00000




								3/8"-16

								1/4"	3/16"	Rockwell C45	ASME B18.3	25	90289A615	00000


								5/16"	3/16"	Rockwell C45	ASME B18.3	25	90289A616	0000
								3/8"	3/16"	Rockwell C45	ASME B18.3	50	90289A617	00000
								7/16"	3/16"	Rockwell C45	ASME B18.3	25	90289A618	00000
								1/2"	3/16"	Rockwell C45	ASME B18.3	50	90289A619	00000
								5/8"	3/16"	Rockwell C45	ASME B18.3	25	90289A621	0000
								3/4"	3/16"	Rockwell C45	ASME B18.3	25	90289A622	0000
								1"	3/16"	Rockwell C45	ASME B18.3	25	90289A624	00000
								1 1/4"	3/16"	Rockwell C45	ASME B18.3	25	90289A626	00000
								1 1/2"	3/16"	Rockwell C45	ASME B18.3	10	90289A628	00000
								2"	3/16"	Rockwell C45	ASME B18.3	5	90289A632	00000




							3/8"-24

							5/16"		3/16"	Rockwell C45	ASME B18.3	25	90289A363	0000


							3/8"		3/16"	Rockwell C45	ASME B18.3	50	90289A365	00000
							1/2"		3/16"	Rockwell C45	ASME B18.3	50	90289A366	00000




										1/2"-13

3/8"										1/4"	Rockwell C45	ASME B18.3	10	90289A705	00000


1/2"	1/4"									Rockwell C45	ASME B18.3	10	90289A707	00000
5/8"	1/4"									Rockwell C45	ASME B18.3	10	90289A709	0000
3/4"	1/4"									Rockwell C45	ASME B18.3	10	90289A711	0000
1"	1/4"									Rockwell C45	ASME B18.3	10	90289A713	00000
1 3/4"	1/4"									Rockwell C45	ASME B18.3	5	90289A718	00000
2"	1/4"									Rockwell C45	ASME B18.3	5	90289A720	00000




										1/2"-20

										3/4"	1/4"	Rockwell C45	ASME B18.3	5	90289A750	00000


		7/8"								1/4"	Rockwell C45	ASME B18.3	5	90289A753	00000
		1"	1/4"							Rockwell C45	ASME B18.3	5	90289A756	00000
		1 1/4"	1/4"							Rockwell C45	ASME B18.3	5	90289A759	00000
		1 1/2"	1/4"							Rockwell C45	ASME B18.3	5	90289A764	00000




										5/8"-11

										1/2"	5/16"	Rockwell C45	ASME B18.3	1	90289A789	0000


				5/8"	5/16"					Rockwell C45	ASME B18.3	5	90289A791	00000
				3/4"	5/16"					Rockwell C45	ASME B18.3	1	90289A792	0000
				1"	5/16"					Rockwell C45	ASME B18.3	1	90289A794	0000




										3/4"-10

										3/4"	3/8"	Rockwell C45	ASME B18.3	5	90289A833	00000


										Alloy Steel







								M3 × 0.5 mm

								3 mm					1.5 mm	Rockwell C45	ISO 4029	50	94285A310	0000


								4 mm					1.5 mm	Rockwell C45	ISO 4029	50	94285A315	00000
								5 mm					1.5 mm	Rockwell C45	ISO 4029	50	94285A320	00000
								6 mm					1.5 mm	Rockwell C45	ISO 4029	50	94285A325	00000
								8 mm					1.5 mm	Rockwell C45	ISO 4029	25	94285A327	0000




									M4 × 0.7 mm

									4 mm				2 mm	Rockwell C45	ISO 4029	50	94285A350	00000


									5 mm				2 mm	Rockwell C45	ISO 4029	50	94285A355	00000
									6 mm				2 mm	Rockwell C45	ISO 4029	50	94285A360	00000
									8 mm				2 mm	Rockwell C45	ISO 4029	50	94285A365	00000
									10 mm				2 mm	Rockwell C45	ISO 4029	25	94285A367	0000




									M5 × 0.8 mm

									5 mm				2.5 mm	Rockwell C45	ISO 4029	50	94285A450	00000


									6 mm				2.5 mm	Rockwell C45	ISO 4029	50	94285A455	00000
									8 mm				2.5 mm	Rockwell C45	ISO 4029	50	94285A460	00000
									10 mm				2.5 mm	Rockwell C45	ISO 4029	50	94285A465	00000




			M6 × 1 mm

			6 mm										3 mm	Rockwell C45	ISO 4029	50	94285A510	00000


			8 mm										3 mm	Rockwell C45	ISO 4029	50	94285A515	00000
			10 mm										3 mm	Rockwell C45	ISO 4029	50	94285A520	00000
			20 mm										3 mm	Rockwell C45	ISO 4029	25	94285A530	00000




				M8 × 1.25 mm

				8 mm	4 mm									Rockwell C45	ISO 4029	50	94285A610	00000


				10 mm	4 mm									Rockwell C45	ISO 4029	50	94285A615	00000
				12 mm	4 mm									Rockwell C45	ISO 4029	50	94285A620	00000
				20 mm	4 mm									Rockwell C45	ISO 4029	10	94285A630	0000
				25 mm	4 mm									Rockwell C45	ISO 4029	10	94285A633	0000
				30 mm	4 mm									Rockwell C45	ISO 4029	10	94285A636	0000

Serrated-Locking Stainless Steel Cup-Tip Set Screws

These corrosion-resistant screws have knurled edges that dig deeper into material when standard cup tips might slip. With a better grip, they're less likely to loosen when securing collars, gears, and pulleys that experience vibration. Made of stainless steel, they won't rust, but they're not as strong as alloy steel.

18-8 Stainless Steel—The choice for wet and outdoor environments, these screws won't rust. However, they don't hold up to the harsh chemicals that 316 stainless steel can.

	Lg.	Drive Size	Hardness	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				4-40

				1/8"	0.050"	Rockwell B80	ASME B18.3	50	93445A170	000000


				3/16"	0.050"	Rockwell B80	ASME B18.3	50	93445A175	00000
				1/4"	0.050"	Rockwell B80	ASME B18.3	50	93445A180	00000




						6-32

						1/8"	1/16"	Rockwell B80	ASME B18.3	50	93445A210	00000


						3/16"	1/16"	Rockwell B80	ASME B18.3	50	93445A215	00000
						1/4"	1/16"	Rockwell B80	ASME B18.3	50	93445A220	0000
						3/8"	1/16"	Rockwell B80	ASME B18.3	50	93445A225	0000




								8-32

								1/8"	5/64"	Rockwell B80	ASME B18.3	50	93445A310	00000


								3/16"	5/64"	Rockwell B80	ASME B18.3	50	93445A315	00000
								1/4"	5/64"	Rockwell B80	ASME B18.3	50	93445A320	0000
								3/8"	5/64"	Rockwell B80	ASME B18.3	50	93445A330	00000
								1/2"	5/64"	Rockwell B80	ASME B18.3	25	93445A332	0000




										10-24

										3/16"	3/32"	Rockwell B80	ASME B18.3	25	93445A348	00000


										1/4"	3/32"	Rockwell B80	ASME B18.3	50	93445A350	0000
										3/8"	3/32"	Rockwell B80	ASME B18.3	50	93445A355	00000




												10-32

												1/4"	3/32"	Rockwell B80	ASME B18.3	50	93445A380	0000


												3/8"	3/32"	Rockwell B80	ASME B18.3	25	93445A385	0000
												1/2"	3/32"	Rockwell B80	ASME B18.3	25	93445A376	00000




	1/4"-20

	1/4"												1/8"	Rockwell B80	ASME B18.3	50	93445A420	0000


	3/8"	1/8"											Rockwell B80	ASME B18.3	25	93445A425	0000
	1/2"	1/8"	Rockwell B80										ASME B18.3	25	93445A427	00000
	3/4"	1/8"	Rockwell B80										ASME B18.3	10	93445A440	0000
	1"	1/8"	Rockwell B80										ASME B18.3	10	93445A453	0000




			5/16"-18

			1/4"										5/32"	Rockwell B80	ASME B18.3	10	93445A520	00000


			5/16"	5/32"	Rockwell B80								ASME B18.3	10	93445A523	0000
			3/8"	5/32"	Rockwell B80								ASME B18.3	10	93445A525	0000
			1/2"	5/32"	Rockwell B80								ASME B18.3	10	93445A528	00000




					3/8"-16

					3/8"								3/16"	Rockwell B80	ASME B18.3	10	93445A610	0000


					1/2"	3/16"							Rockwell B80	ASME B18.3	10	93445A613	00000
					5/8"	3/16"	Rockwell B80						ASME B18.3	10	93445A615	00000
					3/4"	3/16"	Rockwell B80						ASME B18.3	10	93445A618	00000




							M3 × 0.5 mm

							3 mm						1.5 mm	Rockwell B80	—	25	91313A116	0000


							4 mm						1.5 mm	Rockwell B80	—	25	91313A119	0000
							5 mm						1.5 mm	Rockwell B80	—	25	91313A122	0000




									M4 × 0.7 mm

									4 mm				2 mm	Rockwell B80	—	25	91313A134	0000


									5 mm				2 mm	Rockwell B80	—	25	91313A137	0000
									6 mm				2 mm	Rockwell B80	—	25	91313A139	0000




											M5 × 0.8 mm

											5 mm		2.5 mm	Rockwell B80	—	25	91313A142	0000


6 mm											2.5 mm		Rockwell B80	—	25	91313A145	0000
10 mm											2.5 mm		Rockwell B80	—	25	91313A149	0000




												M6 × 1 mm

												6 mm	3 mm	Rockwell B80	—	25	91313A151	0000


	10 mm											3 mm	Rockwell B80	—	25	91313A156	0000
	12 mm	3 mm										Rockwell B80	—	25	91313A159	0000




												M8 × 1.25 mm

												8 mm	4 mm	Rockwell B80	—	10	91313A167	0000


												10 mm	4 mm	Rockwell B80	—	10	91313A172	0000
			12 mm									4 mm	Rockwell B80	—	10	91313A175	0000

Steel Cup-Tip Set Screw Assortments




Serrated Locking

Keep a range of sizes on hand to fasten a variety of machinery and equipment. These screws are made of alloy steel, so they're strong enough to hold components without wearing down. The tip has thin edges that dig into surfaces for a secure hold. They often lock gears, pulleys, and other transmission components onto shafts.

Serrated Locking—Unlike standard cup tips, the knurled edges on these screws dig deeper into shafts and other material. With a better grip, they're less likely to loosen when securing collars, gears, and pulleys that experience vibration.

Black-Oxide Alloy Steel—These screws have a dark matte finish that offers minimal corrosion resistance, so they're best for dry environments.

		Each
Black-Oxide Alloy Steel







	Serrated Locking

	300	8-32 × 1/4" Lg. (25 Pieces), 10-32 × 3/16" Lg. (25 Pieces), 10-32 × 1/4" Lg. (25 Pieces), 1/4"-20 × 1/4" Lg. (25 Pieces), 1/4"-20 × 3/8" Lg. (25 Pieces), 1/4"-20 × 1/2" Lg. (25 Pieces), 1/4"-28 × 1/4" Lg. (25 Pieces), 5/16"-18 × 3/8" Lg. (25 Pieces), 5/16"-18 × 1/2" Lg. (25 Pieces), 3/8"-16 × 3/8" Lg. (25 Pieces), 3/8"-16 × 1/2" Lg. (25 Pieces), 1/2"-13 × 1/2" Lg. (25 Pieces)	Plastic Box	92170A111	0000000