MS51971 is a military specification for a plain hexagon nut made of corrosion-resistant 300 series stainless steel. It is passivated and has UNC-2B threads. The specific dimensions and other details depend on the version of the specification (C, D, etc.).
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1/2"-13 Finished Hex Nuts, 304 Stainless Steel, MS51971-5 (10/Pkg.)
$73.28
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