NASM51958 Screws | McMaster-Carr

These stainless steel pan head Phillips screws won't rust or corrode when exposed to moisture and chemicals. They have a moderate height and width profile, offering a middle ground between narrower button heads and wider truss heads. The Phillips drive easily aligns with drivers and withstands more torque than slotted drives, but drivers slip when you apply too much force.

Length is measured from under the head.

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.

Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these screws have a dark, matte coating to create a finished look. They won't rust in wet and outdoor environments, but they don't hold up to the harsh chemicals that 316 stainless steel can.

Military Specification—These screws are manufactured and tested to meet strict U.S. military standards for material and construction.

		Head
	Lg.	Dia.	Ht.	Threading	Tensile Strength, psi	Specs. Met	Mil. Spec.	Certificate Type	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				0-80

				1/8"	0.116"	0.044"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-120, NASM51958	—	100	91400A030	000000


				3/16"	0.116"	0.044"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-121, NASM51958	Material Certificate	100	91400A035	00000
				1/4"	0.116"	0.044"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-122, NASM51958	—	100	91400A041	00000
				5/16"	0.116"	0.044"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-123, NASM51958	—	100	91400A043	00000
				3/8"	0.116"	0.044"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-124, NASM51958	—	100	91400A046	00000
				7/16"	0.116"	0.044"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-125, NASM51958	—	25	91400A047	00000
				1/2"	0.116"	0.044"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-126, NASM51958	—	25	91400A049	00000




						6-40

						1/4"	0.27"	0.097"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-26, NASM51958	—	25	91400A170	00000


						5/16"	0.27"	0.097"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-27, NASM51958	—	25	91400A173	00000
						3/8"	0.27"	0.097"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-28, NASM51958	—	25	91400A176	00000




								10-32

								1/4"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-59, NASM51958	—	50	91400A821	00000


								5/16"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-60, NASM51958	Material Certificate	50	91400A825	00000
								3/8"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-61, NASM51958	Material Certificate	50	91400A827	00000
								7/16"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-62, NASM51958	—	50	91400A828	00000
								1/2"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-63, NASM51958	Material Certificate	50	91400A829	00000
								5/8"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-64, NASM51958	—	50	91400A830	00000
								3/4"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-65, NASM51958	Material Certificate	25	91400A831	0000
								7/8"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-66, NASM51958	—	25	91400A832	00000
								1"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-67, NASM51958	—	25	91400A833	00000
								1 1/4"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-68, NASM51958	Material Certificate	25	91400A836	00000
								1 1/2"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-69, NASM51958	—	25	91400A838	00000


								2"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-71, NASM51958	—	10	91400A841	00000




										1/4"-28

										1/2"	0.492"	0.175"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-79, NASM51958	—	25	91400A850	00000


										5/8"	0.492"	0.175"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-80, NASM51958	—	25	91400A851	00000
										3/4"	0.492"	0.175"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-81, NASM51958	—	10	91400A853	00000
										7/8"	0.492"	0.175"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-82, NASM51958	—	10	91400A854	00000
										1"	0.492"	0.175"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-83, NASM51958	—	10	91400A856	00000
1 1/4"										0.492"	0.175"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-84, NASM51958	—	10	91400A859	00000
1 1/2"	0.492"									0.175"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35	MS51958-85, NASM51958	—	10	91400A862	00000


Black-Oxide 18-8 Stainless Steel







										10-32

										1/4"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92	MS51958-59B, NASM51958	—	10	90988A101	0000


										3/8"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92	MS51958-61B, NASM51958	Material Certificate	10	90988A103	0000
										1/2"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92	MS51958-63B, NASM51958	—	10	90988A105	0000
										3/4"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92	MS51958-65B, NASM51958	—	10	90988A107	0000
										1"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92	MS51958-67B, NASM51958	—	10	90988A109	00000