NAS1352N Cap Screws | McMaster-Carr

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100,000 psi or greater

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DFARS Specialty Metals

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Rockwell C33

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Unified Standard Class 3A

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146 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.

High-Temperature High-Strength A286 Stainless Steel—Often used to fasten parts in engines and turbines, these are our strongest stainless steel screws. They withstand higher temperatures than 18-8 stainless steel screws and resist corrosion from chemicals, such as bleach and chlorine. However, they won't hold up to salt water as well as 316 stainless steel screws.

Military Specification—Manufactured and tested to meet strict U.S. military standards for material and construction.

		Head							Each		Package
	Lg.	Dia.	Ht.	Threading	Thread Spacing	Tensile Strength, psi	Mil. Spec.	Specs. Met		Each	Pkg. Qty.		Pkg.
High-Temperature High-Strength A286 Stainless Steel







				2-56

				1/8"	0.14"	0.086"	Fully Threaded	Coarse	160,000	NAS1352N02-2	Fed. Spec. FF-S-86, SAE AMS5737	92423A108	00000	100	92423A208	0000000


				3/16"	0.14"	0.086"	Fully Threaded	Coarse	160,000	NAS1352N02-3	Fed. Spec. FF-S-86, SAE AMS5737	92423A411	0000	100	92423A412	000000
				1/4"	0.14"	0.086"	Fully Threaded	Coarse	160,000	NAS1352N02-4	Fed. Spec. FF-S-86, SAE AMS5737	92423A413	0000	100	92423A414	000000
				5/16"	0.14"	0.086"	Fully Threaded	Coarse	160,000	NAS1352N02-5	Fed. Spec. FF-S-86, SAE AMS5737	92423A416	0000	100	92423A415	000000
				3/8"	0.14"	0.086"	Fully Threaded	Coarse	160,000	NAS1352N02-6	Fed. Spec. FF-S-86, SAE AMS5737	92423A419	0000	100	92423A417	000000
				1/2"	0.14"	0.086"	Fully Threaded	Coarse	160,000	NAS1352N02-8	Fed. Spec. FF-S-86, SAE AMS5737	92423A107	0000	100	92423A207	000000
				5/8"	0.14"	0.086"	Fully Threaded	Coarse	160,000	NAS1352N02-10	Fed. Spec. FF-S-86, SAE AMS5737	92423A109	0000	100	92423A209	000000
				3/4"	0.14"	0.086"	Fully Threaded	Coarse	160,000	NAS1352N02-12	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A119	0000	50	92423A219	000000
				1"	0.14"	0.086"	Partially Threaded	Coarse	160,000	NAS1352N02-16	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A120	0000	50	92423A220	000000




						4-40

						1/8"	0.183"	0.112"	Fully Threaded	Coarse	160,000	NAS1352N04-2	Fed. Spec. FF-S-86, SAE AMS5737	92423A110	0000	100	92423A210	000000


						3/16"	0.183"	0.112"	Fully Threaded	Coarse	160,000	NAS1352N04-3	Fed. Spec. FF-S-86, SAE AMS5737	92423A111	0000	100	92423A211	000000
						1/4"	0.183"	0.112"	Fully Threaded	Coarse	160,000	NAS1352N04-4	Fed. Spec. FF-S-86, SAE AMS5737	92423A430	0000	100	92423A431	000000
						5/16"	0.183"	0.112"	Fully Threaded	Coarse	160,000	NAS1352N04-5	Fed. Spec. FF-S-86, SAE AMS5737	92423A433	0000	100	92423A432	000000
						3/8"	0.183"	0.112"	Fully Threaded	Coarse	160,000	NAS1352N04-6	Fed. Spec. FF-S-86, SAE AMS5737	92423A436	0000	100	92423A434	000000
						1/2"	0.183"	0.112"	Fully Threaded	Coarse	160,000	NAS1352N04-8	Fed. Spec. FF-S-86, SAE AMS5737	92423A439	0000	100	92423A435	000000
						5/8"	0.183"	0.112"	Fully Threaded	Coarse	160,000	NAS1352N04-10	Fed. Spec. FF-S-86, SAE AMS5737	92423A112	0000	100	92423A212	000000
						3/4"	0.183"	0.112"	Fully Threaded	Coarse	160,000	NAS1352N04-12	Fed. Spec. FF-S-86, SAE AMS5737	92423A442	0000	100	92423A441	000000
						1"	0.183"	0.112"	Partially Threaded	Coarse	160,000	NAS1352N04-16	Fed. Spec. FF-S-86, SAE AMS5737	92423A113	0000	100	92423A213	000000




								6-32

								1/4"	0.226"	0.138"	Fully Threaded	Coarse	160,000	NAS1352N06-4	Fed. Spec. FF-S-86, SAE AMS5737	92423A452	0000	100	92423A451	000000


								5/16"	0.226"	0.138"	Fully Threaded	Coarse	160,000	NAS1352N06-5	Fed. Spec. FF-S-86, SAE AMS5737	92423A455	0000	100	92423A456	000000
								3/8"	0.226"	0.138"	Fully Threaded	Coarse	160,000	NAS1352N06-6	Fed. Spec. FF-S-86, SAE AMS5737	92423A458	0000	100	92423A457	000000
								1/2"	0.226"	0.138"	Fully Threaded	Coarse	160,000	NAS1352N06-8	Fed. Spec. FF-S-86, SAE AMS5737	92423A461	0000	100	92423A462	000000
								5/8"	0.226"	0.138"	Fully Threaded	Coarse	160,000	NAS1352N06-10	Fed. Spec. FF-S-86, SAE AMS5737	92423A114	0000	100	92423A214	000000
								3/4"	0.226"	0.138"	Fully Threaded	Coarse	160,000	NAS1352N06-12	Fed. Spec. FF-S-86, SAE AMS5737	92423A467	0000	100	92423A468	000000
								1"	0.226"	0.138"	Fully Threaded	Coarse	160,000	NAS1352N06-16	Fed. Spec. FF-S-86, SAE AMS5737	92423A471	0000	100	92423A472	000000




										8-32

										1/4"	0.27"	0.164"	Fully Threaded	Coarse	160,000	NAS1352N08-4	Fed. Spec. FF-S-86, SAE AMS5737	92423A115	0000	100	92423A215	000000


										5/16"	0.27"	0.164"	Fully Threaded	Coarse	160,000	NAS1352N08-5	Fed. Spec. FF-S-86, SAE AMS5737	92423A116	0000	100	92423A216	000000
										3/8"	0.27"	0.164"	Fully Threaded	Coarse	160,000	NAS1352N08-6	Fed. Spec. FF-S-86, SAE AMS5737	92423A480	0000	100	92423A481	000000
										1/2"	0.27"	0.164"	Fully Threaded	Coarse	160,000	NAS1352N08-8	Fed. Spec. FF-S-86, SAE AMS5737	92423A483	0000	100	92423A482	000000
5/8"										0.27"	0.164"	Fully Threaded	Coarse	160,000	NAS1352N08-10	Fed. Spec. FF-S-86, SAE AMS5737	92423A486	0000	100	92423A485	000000
3/4"	0.27"									0.164"	Fully Threaded	Coarse	160,000	NAS1352N08-12	Fed. Spec. FF-S-86, SAE AMS5737	92423A489	0000	100	92423A487	000000
1"	0.27"									0.164"	Fully Threaded	Coarse	160,000	NAS1352N08-16	Fed. Spec. FF-S-86, SAE AMS5737	92423A491	0000	100	92423A492	000000
1 1/4"	0.27"									0.164"	Partially Threaded	Coarse	160,000	NAS1352N08-20	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A121	00000	25	92423A221	000000
1 3/4"	0.27"									0.164"	Partially Threaded	Coarse	160,000	NAS1352N08-28	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A122	00000	25	92423A222	000000
2"	0.27"	0.164"								Partially Threaded	Coarse	160,000	NAS1352N08-32	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A123	00000	25	92423A223	000000
3"	0.27"	0.164"	Partially Threaded							Coarse	160,000	NAS1352N08-48	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A124	00000	25	92423A224	000000


4"	0.27"	0.164"	Partially Threaded							Coarse	160,000	NAS1352N08-64	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A125	00000	25	92423A225	000000




		1/4"-20

		3/8"	3/8"							1/4"	Fully Threaded	Coarse	160,000	NAS1352N4-6	Fed. Spec. FF-S-86, SAE AMS5737	92423A117	0000	50	92423A217	000000


		1/2"	3/8"							1/4"	Fully Threaded	Coarse	160,000	NAS1352N4-8	Fed. Spec. FF-S-86, SAE AMS5737	92423A531	0000	50	92423A532	000000
		5/8"	3/8"							1/4"	Fully Threaded	Coarse	160,000	NAS1352N4-10	Fed. Spec. FF-S-86, SAE AMS5737	92423A533	0000	50	92423A534	000000
		3/4"	3/8"							1/4"	Fully Threaded	Coarse	160,000	NAS1352N4-12	Fed. Spec. FF-S-86, SAE AMS5737	92423A536	0000	50	92423A535	000000
		1"	3/8"							1/4"	Fully Threaded	Coarse	160,000	NAS1352N4-16	Fed. Spec. FF-S-86, SAE AMS5737	92423A539	0000	50	92423A538	000000
		1 1/4"	3/8"	1/4"						Fully Threaded	Coarse	160,000	NAS1352N4-20	Fed. Spec. FF-S-86, SAE AMS5737	92423A543	00000	50	92423A542	000000
		1 1/2"	3/8"	1/4"	Partially Threaded					Coarse	160,000	NAS1352N4-24	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A134	0000	25	92423A234	000000
		1 3/4"	3/8"	1/4"	Partially Threaded					Coarse	160,000	NAS1352N4-28	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A135	0000	25	92423A235	000000
		2"	3/8"	1/4"	Partially Threaded					Coarse	160,000	NAS1352N4-32	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A136	00000	25	92423A236	000000
		2 1/2"	3/8"	1/4"	Partially Threaded					Coarse	160,000	NAS1352N4-40	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A137	00000	25	92423A237	000000
		2 3/4"	3/8"	1/4"	Partially Threaded					Coarse	160,000	NAS1352N4-44	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A138	00000	25	92423A238	000000


		3"	3/8"	1/4"	Partially Threaded					Coarse	160,000	NAS1352N4-48	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A139	00000	25	92423A239	000000
		3 1/2"	3/8"	1/4"	Partially Threaded					Coarse	160,000	NAS1352N4-56	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A140	00000	25	92423A240	000000
		4"	3/8"	1/4"	Partially Threaded					Coarse	160,000	NAS1352N4-64	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A141	00000	25	92423A241	000000
		5"	3/8"	1/4"	Partially Threaded					Coarse	160,000	NAS1352N4-80	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A142	00000	25	92423A242	000000
		6"	3/8"	1/4"	Partially Threaded					Coarse	160,000	NAS1352N4-96	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A143	00000	25	92423A243	000000




				5/16"-18

				1/2"	15/32"	5/16"	Fully Threaded			Coarse	160,000	NAS1352N5-8	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A144	00000	25	92423A244	000000


				3/4"	15/32"	5/16"	Fully Threaded			Coarse	160,000	NAS1352N5-12	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A145	0000	25	92423A245	000000
				1"	15/32"	5/16"	Fully Threaded			Coarse	160,000	NAS1352N5-16	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A146	0000	25	92423A246	000000
				1 1/4"	15/32"	5/16"	Fully Threaded			Coarse	160,000	NAS1352N5-20	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A147	0000	25	92423A247	000000
				1 1/2"	15/32"	5/16"	Fully Threaded			Coarse	160,000	NAS1352N5-24	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A148	00000	25	92423A248	000000
				2"	15/32"	5/16"	Partially Threaded			Coarse	160,000	NAS1352N5-32	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A149	00000	25	92423A249	000000
				2 1/4"	15/32"	5/16"	Partially Threaded			Coarse	160,000	NAS1352N5-36	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A150	00000	25	92423A250	000000
				2 3/4"	15/32"	5/16"	Partially Threaded			Coarse	160,000	NAS1352N5-44	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A151	00000	25	92423A251	000000
				4"	15/32"	5/16"	Partially Threaded			Coarse	160,000	NAS1352N5-64	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A152	00000	25	92423A252	000000
				5"	15/32"	5/16"	Partially Threaded			Coarse	160,000	NAS1352N5-80	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A153	00000	25	92423A253	000000




						3/8"-16

						3/4"	9/16"	3/8"	Fully Threaded	Coarse	160,000	NAS1352N6-12	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A156	00000	25	92423A256	000000


						1"	9/16"	3/8"	Fully Threaded	Coarse	160,000	NAS1352N6-16	Fed. Spec. FF-S-86, SAE AMS5737	92423A573	00000	25	92423A572	000000
						1 1/4"	9/16"	3/8"	Fully Threaded	Coarse	160,000	NAS1352N6-20	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A157	00000	25	92423A257	000000
						1 1/2"	9/16"	3/8"	Fully Threaded	Coarse	160,000	NAS1352N6-24	Fed. Spec. FF-S-86, SAE AMS5737	92423A577	00000	25	92423A578	000000
						1 3/4"	9/16"	3/8"	Partially Threaded	Coarse	160,000	NAS1352N6-28	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A158	00000	25	92423A258	000000
						2"	9/16"	3/8"	Partially Threaded	Coarse	160,000	NAS1352N6-32	Fed. Spec. FF-S-86, SAE AMS5737	92423A118	00000	25	92423A218	000000
						3 1/2"	9/16"	3/8"	Partially Threaded	Coarse	160,000	NAS1352N6-56	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A159	00000	25	92423A259	000000
						4"	9/16"	3/8"	Partially Threaded	Coarse	160,000	NAS1352N6-64	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A160	00000	25	92423A260	000000
						5"	9/16"	3/8"	Partially Threaded	Coarse	160,000	NAS1352N6-80	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A161	00000	25	92423A261	000000
						6"	9/16"	3/8"	Partially Threaded	Coarse	160,000	NAS1352N6-96	ASME B18.3, SAE AMS5731, SAE AMS5737	92423A162	00000	25	92423A262	000000