Nonmagnetic Set Screws | McMaster-Carr

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137 Products

Tip Type

Cup

Thin edges dig into surfaces for a secure hold

81 products

Flat

Less likely than other tips to mar surfaces when you reposition parts frequently

56 products

Performance

Nonmarring

Less likely than other tips to scratch, gouge, or deform surfaces

56 products

Drive Style

Hex

The standard drive style for set screws

81 products

Brass Cup-Tip Set Screws

Made of brass, these cup-tip screws are conductive and nonmagnetic, making them ideal for securing electrical assemblies. The tip has thin edges that dig into surfaces for a secure hold. Brass is softer than most metal, so it won't scratch other fastening components.

	Lg.	Drive Size	Hardness	Specs. Met	Pkg. Qty.		Pkg.
Brass







				2-56

				1/8"	0.035"	Rockwell B55	ASME B18.3	25	92991A111	00000


				3/16"	0.035"	Rockwell B55	ASME B18.3	25	92991A112	0000
				1/4"	0.035"	Rockwell B55	ASME B18.3	25	92991A113	0000




						4-40

						1/8"	0.050"	Rockwell B55	ASME B18.3	50	92991A103	0000


						3/16"	0.050"	Rockwell B55	ASME B18.3	50	92991A105	00000
						1/4"	0.050"	Rockwell B55	ASME B18.3	50	92991A106	00000
						3/8"	0.050"	Rockwell B55	ASME B18.3	50	92991A211	00000




								6-32

								1/8"	1/16"	Rockwell B55	ASME B18.3	50	92991A142	0000


								3/16"	1/16"	Rockwell B55	ASME B18.3	50	92991A143	00000
								1/4"	1/16"	Rockwell B55	ASME B18.3	50	92991A144	0000
								3/8"	1/16"	Rockwell B55	ASME B18.3	50	92991A212	0000
								1/2"	1/16"	Rockwell B55	ASME B18.3	50	92991A213	00000




										8-32

										1/8"	5/64"	Rockwell B55	ASME B18.3	50	92991A188	0000


										3/16"	5/64"	Rockwell B55	ASME B18.3	50	92991A189	00000
										1/4"	5/64"	Rockwell B55	ASME B18.3	50	92991A190	00000
										5/16"	5/64"	Rockwell B55	ASME B18.3	100	92991A114	00000
										3/8"	5/64"	Rockwell B55	ASME B18.3	50	92991A192	00000
										1/2"	5/64"	Rockwell B55	ASME B18.3	25	92991A194	0000
										5/8"	5/64"	Rockwell B55	ASME B18.3	25	92991A115	00000
										3/4"	5/64"	Rockwell B55	ASME B18.3	25	92991A116	00000




												10-24

												3/16"	3/32"	Rockwell B55	ASME B18.3	25	92991A237	0000


1/4"												3/32"	Rockwell B55	ASME B18.3	25	92991A238	0000
5/16"	3/32"											Rockwell B55	ASME B18.3	50	92991A117	00000
3/8"	3/32"											Rockwell B55	ASME B18.3	25	92991A240	0000
1/2"	3/32"											Rockwell B55	ASME B18.3	25	92991A243	0000
5/8"	3/32"											Rockwell B55	ASME B18.3	25	92991A118	0000
3/4"	3/32"	Rockwell B55										ASME B18.3	25	92991A119	00000




		10-32

		1/8"	3/32"									Rockwell B55	ASME B18.3	50	92991A121	00000


		3/16"	3/32"									Rockwell B55	ASME B18.3	50	92991A824	00000
		1/4"	3/32"									Rockwell B55	ASME B18.3	25	92991A825	0000
		5/16"	3/32"	Rockwell B55								ASME B18.3	25	92991A214	0000
		3/8"	3/32"	Rockwell B55	ASME B18.3							25	92991A827	0000
		1/2"	3/32"	Rockwell B55	ASME B18.3							25	92991A829	0000
		5/8"	3/32"	Rockwell B55	ASME B18.3							25	92991A122	0000
		3/4"	3/32"	Rockwell B55	ASME B18.3							25	92991A833	00000
		1"	3/32"	Rockwell B55	ASME B18.3							25	92991A123	00000




				1/4"-20

				3/16"	1/8"							Rockwell B55	ASME B18.3	25	92991A124	0000


				1/4"	1/8"	Rockwell B55	ASME B18.3					25	92991A533	0000
				5/16"	1/8"	Rockwell B55	ASME B18.3					25	92991A215	0000
				3/8"	1/8"	Rockwell B55	ASME B18.3					25	92991A535	00000
				1/2"	1/8"	Rockwell B55	ASME B18.3					25	92991A537	00000
				5/8"	1/8"	Rockwell B55	ASME B18.3					25	92991A216	00000
				3/4"	1/8"	Rockwell B55	ASME B18.3					10	92991A540	0000
				1"	1/8"	Rockwell B55	ASME B18.3					10	92991A542	00000
				1 1/4"	1/8"	Rockwell B55	ASME B18.3					10	92991A125	00000
				1 1/2"	1/8"	Rockwell B55	ASME B18.3					10	92991A217	00000




						1/4"-28

						3/16"	1/8"	Rockwell B55	ASME B18.3			25	92991A126	0000


						1/4"	1/8"	Rockwell B55	ASME B18.3			10	92991A127	0000
						3/8"	1/8"	Rockwell B55	ASME B18.3			10	92991A128	0000
						1/2"	1/8"	Rockwell B55	ASME B18.3			10	92991A129	0000




								5/16"-18

								1/4"	5/32"			Rockwell B55	ASME B18.3	25	92991A574	00000


								5/16"	5/32"	Rockwell B55	ASME B18.3	25	92991A218	00000
								3/8"	5/32"	Rockwell B55	ASME B18.3	25	92991A576	00000
								1/2"	5/32"	Rockwell B55	ASME B18.3	10	92991A578	0000
								5/8"	5/32"	Rockwell B55	ASME B18.3	10	92991A219	0000
								3/4"	5/32"	Rockwell B55	ASME B18.3	10	92991A581	00000
								1"	5/32"	Rockwell B55	ASME B18.3	10	92991A583	00000
								1 1/4"	5/32"	Rockwell B55	ASME B18.3	5	92991A131	00000
								1 1/2"	5/32"	Rockwell B55	ASME B18.3	5	92991A132	00000




								5/16"-24

								1/4"	5/32"	Rockwell B55	ASME B18.3	10	92991A133	0000


								3/8"	5/32"	Rockwell B55	ASME B18.3	10	92991A134	0000
								1/2"	5/32"	Rockwell B55	ASME B18.3	5	92991A135	0000




										3/8"-16

										1/4"	3/16"	Rockwell B55	ASME B18.3	10	92991A136	0000


		3/8"	3/16"							Rockwell B55	ASME B18.3	25	92991A617	00000
		1/2"	3/16"							Rockwell B55	ASME B18.3	10	92991A619	00000
		5/8"	3/16"							Rockwell B55	ASME B18.3	10	92991A221	00000
		3/4"	3/16"							Rockwell B55	ASME B18.3	10	92991A922	00000
		1"	3/16"							Rockwell B55	ASME B18.3	10	92991A624	00000
		1 1/4"	3/16"							Rockwell B55	ASME B18.3	5	92991A137	00000
		1 1/2"	3/16"							Rockwell B55	ASME B18.3	1	92991A138	0000




										3/8"-24

										1/4"	3/16"	Rockwell B55	ASME B18.3	10	92991A139	00000


										3/8"	3/16"	Rockwell B55	ASME B18.3	10	92991A141	00000
				1/2"						3/16"	Rockwell B55	ASME B18.3	5	92991A145	0000




										1/2"-13

										3/8"	1/4"	Rockwell B55	ASME B18.3	10	92991A146	00000


										1/2"	1/4"	Rockwell B55	ASME B18.3	10	92991A650	00000
										3/4"	1/4"	Rockwell B55	ASME B18.3	5	92991A655	00000
						1"				1/4"	Rockwell B55	ASME B18.3	5	92991A660	00000
						1 1/4"	1/4"			Rockwell B55	ASME B18.3	1	92991A147	0000
						1 1/2"	1/4"			Rockwell B55	ASME B18.3	1	92991A148	0000




										1/2"-20

										3/8"	1/4"	Rockwell B55	ASME B18.3	1	92991A149	0000


										1/2"	1/4"	Rockwell B55	ASME B18.3	1	92991A151	0000

Slotted Brass Flat-Tip Set Screws

Made of brass, these flat-tip screws are conductive and nonmagnetic, making them ideal for electrical applications. Softer than most metal, the brass won't scratch or dent delicate parts. Unlike cup and cone tips, the flat tip distributes pressure evenly, reducing marring but not holding as tightly. With only two contact points, the slotted drive can't withstand much torque, so it's best to hand-tighten them.

	Lg., mm	Specs. Met	Pkg. Qty.		Pkg.
Brass







				M2 × 0.4 mm

				3	DIN 551, ISO 4766	10	93038A111	00000


				4	DIN 551, ISO 4766	10	93038A112	0000
				5	DIN 551, ISO 4766	10	93038A113	0000
				6	DIN 551, ISO 4766	10	93038A114	0000
				8	DIN 551, ISO 4766	10	93038A115	0000




						M2.5 × 0.45 mm

						5	DIN 551, ISO 4766	10	93038A116	0000




								M3 × 0.5 mm

								3	DIN 551, ISO 4766	25	93038A117	0000


								4	DIN 551, ISO 4766	25	93038A118	0000
								5	DIN 551, ISO 4766	25	93038A119	00000
								6	DIN 551, ISO 4766	25	93038A121	00000
								8	DIN 551, ISO 4766	25	93038A122	00000
								10	DIN 551, ISO 4766	25	93038A123	0000
								12	DIN 551, ISO 4766	25	93038A124	0000




										M4 × 0.7 mm

										4	DIN 551, ISO 4766	25	93038A125	00000


										5	DIN 551, ISO 4766	25	93038A126	0000
										6	DIN 551, ISO 4766	25	93038A127	0000
										8	DIN 551, ISO 4766	25	93038A128	0000
										10	DIN 551, ISO 4766	25	93038A129	0000
										12	DIN 551, ISO 4766	25	93038A131	00000
										16	DIN 551, ISO 4766	25	93038A132	00000
										20	DIN 551, ISO 4766	10	93038A133	0000




												M5 × 0.8 mm

												5	DIN 551, ISO 4766	25	93038A134	00000


												6	DIN 551, ISO 4766	25	93038A135	00000
8												DIN 551, ISO 4766	25	93038A136	00000
10	DIN 551, ISO 4766											10	93038A137	0000
12	DIN 551, ISO 4766											10	93038A138	0000
16	DIN 551, ISO 4766											10	93038A139	0000
20	DIN 551, ISO 4766											10	93038A141	0000
25	DIN 551, ISO 4766	10										93038A142	0000
30	DIN 551, ISO 4766	10	93038A143									00000




		M6 × 1 mm

		6	DIN 551, ISO 4766									10	93038A144	0000


		8	DIN 551, ISO 4766									10	93038A145	0000
		10	DIN 551, ISO 4766									10	93038A146	0000
		12	DIN 551, ISO 4766									10	93038A147	0000
		16	DIN 551, ISO 4766	10								93038A148	0000
		20	DIN 551, ISO 4766	10	93038A149							00000
		25	DIN 551, ISO 4766	10	93038A151							00000
		30	DIN 551, ISO 4766	5	93038A152							0000




				M8 × 1.25 mm

				8	DIN 551, ISO 4766	5	93038A153					0000


				10	DIN 551, ISO 4766	10	93038A154					00000
				12	DIN 551, ISO 4766	10	93038A155					00000
				16	DIN 551, ISO 4766	10	93038A156					00000
				20	DIN 551, ISO 4766	5	93038A157					0000
				25	DIN 551, ISO 4766	5	93038A158					0000
				30	DIN 551, ISO 4766	5	93038A159					00000




						M10 × 1.5 mm

						10	DIN 551, ISO 4766	1	93038A161			0000


						12	DIN 551, ISO 4766	5	93038A162			00000
						16	DIN 551, ISO 4766	5	93038A163			00000
						20	DIN 551, ISO 4766	1	93038A164			0000
						25	DIN 551, ISO 4766	1	93038A165			0000
						30	DIN 551, ISO 4766	1	93038A166			0000
						35	DIN 551, ISO 4766	1	93038A167			0000
						40	DIN 551, ISO 4766	1	93038A168			0000
						45	DIN 551, ISO 4766	1	93038A169			00000
						50	DIN 551, ISO 4766	1	93038A171			00000




								M12 × 1.75 mm

								20	DIN 551, ISO 4766	1	93038A172	0000