Silver Plated Bolts | McMaster-Carr

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62 Products

Stainless Steel Socket Head Screws


Fully Threaded	Partially Threaded

These screws won't rust or corrode when exposed to moisture and chemicals. Their deep, six-point socket keeps hex keys from slipping out and damaging the drive.

Length is measured from under the head.

Silver-Plated 18-8 Stainless Steel—The silver plating helps these screws thread on smoothly during installation. They also won't rust in wet and outdoor environments.

		Head
	Lg.	Dia.	Ht.	Threading	Thread Spacing	Tensile Strength, psi	Specs. Met	Pkg. Qty.		Pkg.
Silver-Plated 18-8 Stainless Steel







				2-56

				1/8"	0.14"	0.086"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A221	00000


				3/16"	0.14"	0.086"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A231	0000
				1/4"	0.14"	0.086"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A241	0000
				3/8"	0.14"	0.086"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A251	0000
				1/2"	0.14"	0.086"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A261	0000




						4-40

						1/4"	0.183"	0.112"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A421	0000


						3/8"	0.183"	0.112"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A431	0000
						1/2"	0.183"	0.112"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A441	0000
						5/8"	0.183"	0.112"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A451	00000
						3/4"	0.183"	0.112"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A461	0000




								6-32

								1/4"	0.226"	0.138"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A621	0000


								3/8"	0.226"	0.138"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A631	0000
								1/2"	0.226"	0.138"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A641	0000
								5/8"	0.226"	0.138"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A651	0000
								3/4"	0.226"	0.138"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A661	0000
								1"	0.226"	0.138"	Partially Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A671	0000




										8-32

										3/8"	0.27"	0.164"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A821	0000


										1/2"	0.27"	0.164"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A831	0000
										5/8"	0.27"	0.164"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A841	00000
										3/4"	0.27"	0.164"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A851	00000
										1"	0.27"	0.164"	Partially Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A861	00000




												10-24

												1/2"	5/16"	0.19"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A321	00000


3/4"	5/16"											0.19"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A331	00000
1"	5/16"											0.19"	Partially Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A341	00000




		10-32

		3/8"	5/16"									0.19"	Fully Threaded	Fine	70,000	ASME B18.3, ASTM F837	5	90008A521	0000


		1/2"	5/16"									0.19"	Fully Threaded	Fine	70,000	ASME B18.3, ASTM F837	5	90008A531	00000
		5/8"	5/16"									0.19"	Fully Threaded	Fine	70,000	ASME B18.3, ASTM F837	5	90008A541	00000
		3/4"	5/16"									0.19"	Fully Threaded	Fine	70,000	ASME B18.3, ASTM F837	5	90008A551	00000
		1"	5/16"									0.19"	Partially Threaded	Fine	70,000	ASME B18.3, ASTM F837	5	90008A561	00000




				1/4"-20

				1/2"	3/8"							1/4"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A711	00000


				5/8"	3/8"							1/4"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A721	00000
				3/4"	3/8"							1/4"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A731	00000
				1"	3/8"							1/4"	Fully Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A741	00000
				1 1/4"	3/8"							1/4"	Partially Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A751	00000
				1 1/2"	3/8"							1/4"	Partially Threaded	Coarse	70,000	ASME B18.3, ASTM F837	5	90008A761	00000

Cleaned and Bagged Socket Head Screws for High Vacuum

Install these screws in high-vacuum systems where even a small amount of contamination could affect performance. These are cleaned and double-bagged in an ISO Class 5 (Fed. Std. Class 100) clean room. The deep, six-point socket keeps hex keys from slipping out and damaging the drive.

Length is measured from under the head.

Silver-Plated 18-8 Stainless Steel—18-8 stainless steel screws release gas at a slower rate than other metal screws, so your system can reach higher levels of vacuum. The silver plating helps the screw slide smoothly when tightening or loosening it in the mounting surface.

		Head
	Lg.	Dia.	Ht.	Threading	Thread Spacing	Tensile Strength, psi	Clean Room Std.	Specs. Met		Each
Silver-Plated 18-8 Stainless Steel







				4-40

				1/2"	0.183"	0.112"	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	—	90843A110	000000


				3/4"	0.183"	0.112"	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	—	90843A160	00000
				1"	0.183"	0.112"	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	—	90843A210	00000




						6-32

						1/2"	0.226"	0.138"	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	—	90843A120	00000


						3/4"	0.226"	0.138"	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	—	90843A170	00000
						1"	0.226"	0.138"	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	—	90843A220	00000




								8-32

								1/2"	0.27"	0.164"	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	—	90843A130	00000


								3/4"	0.27"	0.164"	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	—	90843A180	00000
								1"	0.27"	0.164"	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	—	90843A230	00000




										10-32

										1/2"	5/16"	0.19"	Fully Threaded	Fine	70,000	Fed. Std. Class 100, ISO Class 5	—	90843A140	00000


										3/4"	5/16"	0.19"	Fully Threaded	Fine	70,000	Fed. Std. Class 100, ISO Class 5	—	90843A190	00000
										1"	5/16"	0.19"	Fully Threaded	Fine	70,000	Fed. Std. Class 100, ISO Class 5	—	90843A240	00000




												1/4"-20

												1/2"	3/8"	1/4"	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	—	90843A150	00000


												3/4"	3/8"	1/4"	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	—	90843A200	00000
												1"	3/8"	1/4"	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	—	90843A250	00000




														M3 × 0.5 mm

8 mm														5.5 mm	3 mm	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	DIN 912, ISO 4762	90843A260	00000


10 mm	5.5 mm													3 mm	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	DIN 912, ISO 4762	90843A300	00000
12 mm	5.5 mm													3 mm	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	DIN 912, ISO 4762	90843A340	00000




		M4 × 0.7 mm

		8 mm	7 mm											4 mm	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	DIN 912, ISO 4762	90843A270	00000


		10 mm	7 mm											4 mm	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	DIN 912, ISO 4762	90843A310	00000
		12 mm	7 mm											4 mm	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	DIN 912, ISO 4762	90843A350	00000




				M5 × 0.8 mm

				8 mm	8.5 mm									5 mm	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	DIN 912, ISO 4762	90843A280	00000


				10 mm	8.5 mm									5 mm	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	DIN 912, ISO 4762	90843A320	00000
				12 mm	8.5 mm									5 mm	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	DIN 912, ISO 4762	90843A360	00000




						M6 × 1 mm

						8 mm	10 mm							6 mm	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	DIN 912, ISO 4762	90843A290	00000


						10 mm	10 mm							6 mm	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	DIN 912, ISO 4762	90843A330	00000
						12 mm	10 mm							6 mm	Fully Threaded	Coarse	70,000	Fed. Std. Class 100, ISO Class 5	DIN 912, ISO 4762	90843A370	00000