Serrated-Locking Set Screws

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172 Products

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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	Pkg. Qty.		Pkg.
Black-Oxide Alloy Steel







				4-40

				1/8"	0.050"	Rockwell C45	100	90289A103	000000


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




						4-48

						1/8"	0.050"	Rockwell C45	50	90289A130	00000




								5-40

								1/8"	1/16"	Rockwell C45	100	90289A121	00000


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




										6-32

										1/8"	1/16"	Rockwell C45	100	90289A142	00000


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




												6-40

												1/8"	1/16"	Rockwell C45	50	90289A160	00000


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




														8-32

														1/8"	5/64"	Rockwell C45	100	90289A188	00000


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




		10-24

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


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




				10-32

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


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




						1/4"-20

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


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


						2"	1/8"	Rockwell C45	10	90289A550	00000




								1/4"-28

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


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




								5/16"-18

								1/4"	5/32"	Rockwell C45	100	90289A574	00000


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




								5/16"-24

								1/4"	5/32"	Rockwell C45	50	90289A358	00000


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




								3/8"-16

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


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




							3/8"-24

							5/16"		3/16"	Rockwell C45	25	90289A363	0000


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




										1/2"-13

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


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




										1/2"-20

										3/4"	1/4"	Rockwell C45	5	90289A750	00000


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




										5/8"-11

										1/2"	5/16"	Rockwell C45	1	90289A789	0000


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




										3/4"-10

										3/4"	3/8"	Rockwell C45	5	90289A833	00000


										Alloy Steel







								M3 × 0.5 mm

								3 mm					1.5 mm	Rockwell C45	50	94285A310	0000


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




									M4 × 0.7 mm

									4 mm				2 mm	Rockwell C45	50	94285A350	00000


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




									M5 × 0.8 mm

									5 mm				2.5 mm	Rockwell C45	50	94285A450	00000


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




			M6 × 1 mm

			6 mm										3 mm	Rockwell C45	50	94285A510	00000


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




				M8 × 1.25 mm

				8 mm	4 mm									Rockwell C45	50	94285A610	00000


				10 mm	4 mm									Rockwell C45	50	94285A615	00000
				12 mm	4 mm									Rockwell C45	50	94285A620	00000
				20 mm	4 mm									Rockwell C45	10	94285A630	0000
				25 mm	4 mm									Rockwell C45	10	94285A633	0000
				30 mm	4 mm									Rockwell C45	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	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				4-40

				1/8"	0.050"	Rockwell B80	50	93445A170	000000


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




						6-32

						1/8"	1/16"	Rockwell B80	50	93445A210	00000


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




								8-32

								1/8"	5/64"	Rockwell B80	50	93445A310	00000


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




										10-24

										3/16"	3/32"	Rockwell B80	25	93445A348	00000


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




												10-32

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


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




	1/4"-20

	1/4"												1/8"	Rockwell B80	50	93445A420	00000


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




			5/16"-18

			1/4"										5/32"	Rockwell B80	10	93445A520	00000


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




					3/8"-16

					3/8"								3/16"	Rockwell B80	10	93445A610	0000


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

Serrated-Locking Steel Cup-Tip Set Screw Assortments

Keep a variety of set screws on hand that won’t shake loose from vibrating machinery. The set screws in these assortments have knurled edges that dig deep into your material to stay put. They hold on tighter than standard cup tips, so they’re often used on gears, pulleys, and other moving equipment. 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.

	Set Screws Included	Container Type		Each
Black-Oxide Alloy Steel



	300	8-32 (25 each in 1/4" Lengths) 10-32 (25 each in 3/16" and 1/4" Lengths) 1/4"-20 (25 each in 1/4", 3/8", and 1/2" Lengths) 1/4"-28 (25 each in 1/4" Lengths) 5/16"-18 (25 each in 3/8" and 1/2" Lengths) 3/8"-16 (25 each in 3/8" and 1/2" Lengths) 1/2"-13 (25 each in 1/2" Lengths)	Plastic Box	92170A111	0000000


	Alloy Steel



			600	M3 × 0.5 mm (50 each in 4 mm and 6 mm Lengths) M4 × 0.7 mm (50 each in 4 mm and 6 mm Lengths) M5 × 0.8 mm (50 each in 6 mm and 8 mm Lengths) M6 × 1 mm (50 each in 6 mm, 8 mm, and 10 mm Lengths) M8 × 1.25 mm (50 each in 8 mm, 10 mm, and 12 mm Lengths)	Plastic Box	94723A110	000000