MS 51958 Machine Screws | McMaster-Carr

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Military Specification

System of Measurement

Thread Size

Length

Drive Style

Specifications Met

Federal Specification

Material

Rounded Head Style

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DFARS Specialty Metals

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Threading

Head Diameter

Thread Spacing

RoHS

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REACH

Drive Size

Thread Fit

Unified Standard Class 2A

Performance

Head Height

Tensile Strength

30,000 psi to 99,999 psi

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34 Products

Stainless Steel Pan Head Phillips Screws

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.	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, NASM51958	MS51958-120	100	000000000	000000


				3/16"	0.116"	0.044"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-121	100	000000000	00000
				1/4"	0.116"	0.044"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-122	100	000000000	00000
				5/16"	0.116"	0.044"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-123	100	000000000	00000
				3/8"	0.116"	0.044"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-124	100	000000000	00000
				7/16"	0.116"	0.044"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-125	25	000000000	00000
				1/2"	0.116"	0.044"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-126	25	000000000	00000




						6-40

						1/4"	0.27"	0.097"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-26	25	000000000	00000


						5/16"	0.27"	0.097"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-27	25	000000000	00000
						3/8"	0.27"	0.097"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-28	25	000000000	00000




								10-32

								1/4"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-59	50	000000000	00000


								5/16"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-60	50	000000000	00000
								3/8"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-61	50	000000000	00000
								7/16"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-62	50	000000000	00000
								1/2"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-63	50	000000000	00000
								5/8"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-64	50	000000000	00000
								3/4"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-65	25	000000000	0000
								7/8"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-66	25	000000000	00000
								1"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-67	25	000000000	00000
								1 1/4"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-68	25	000000000	00000
								1 1/2"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-69	25	000000000	00000


								2"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-71	10	000000000	00000




										1/4"-28

										1/2"	0.492"	0.175"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-79	25	000000000	00000


										5/8"	0.492"	0.175"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-80	25	000000000	00000
										3/4"	0.492"	0.175"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-81	10	000000000	00000
										7/8"	0.492"	0.175"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-82	10	000000000	00000
										1"	0.492"	0.175"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-83	10	000000000	00000
1 1/4"										0.492"	0.175"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-84	10	000000000	00000
1 1/2"	0.492"									0.175"	Fully Threaded	80,000	Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, NASM51958	MS51958-85	10	000000000	00000


Black-Oxide 18-8 Stainless Steel







										10-32

										1/4"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, NASM51958	MS51958-59B	10	000000000	0000


										3/8"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, NASM51958	MS51958-61B	10	000000000	0000
										1/2"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, NASM51958	MS51958-63B	10	000000000	0000
										3/4"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, NASM51958	MS51958-65B	10	000000000	0000
										1"	0.373"	0.133"	Fully Threaded	80,000	Fed. Spec. FF-S-92, NASM51958	MS51958-67B	10	000000000	00000