MS 51971 Hex Nuts | McMaster-Carr

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6 Products

Mil. Spec. Hex Nuts

These nuts are manufactured and tested to strict U.S. military standards for material and construction.

Corrosion-Resistant Stainless Steel

Image of Product. Front orientation. Hex Nuts. Mil. Spec. Hex Nuts.

18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

	Wd.	Ht.	Mil. Spec.	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel


	5/16"-18	1/2"	17/64"	MS51971-2	Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35	10	000000000	00000
	3/8"-16	9/16"	21/64"	MS51971-3	Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35	5	000000000	0000
	1/2"-13	3/4"	7/16"	MS51971-5	Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35	1	000000000	0000
	5/8"-11	15/16"	35/64"	MS51971-7	Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35	1	000000000	0000
	3/4"-10	1 1/8"	41/64"	MS51971-8	Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35	1	000000000	0000

Corrosion-Resistant Stainless Steel with Material Certificate

18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

	Wd.	Ht.	Mil. Spec.	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel


	1/4"-20	7/16"	7/32"	MS51971-1	Fed. Spec. FF-N-836, Fed. Spec. QQ-P-35	10	000000000	00000