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MS51831, KNH, NAS1395, RKK
> MS51831A - Heavy Duty & Thickwall - 4140 Alloy - Inch

Keensert® Inch & Mil-Spec Heavy Duty Inserts - MS51831A Series, Locking and Non-Locking - 4140 Alloy

Looking for 4140 Alloy Keenserts®?

We carry the MS51831A Heavy Duty series in both locking and non-locking styles.

Stock sizes include 8-32 through 1-12 in 4140 Alloy.

Scroll down to find your size, or search by part number.

Add to Cart and buy online or email us for a custom quote.  Most popular products are in stock and ship within 24 hours.

Can't find what you're looking for? Email us at [email protected] for a custom quote. "We have the right screw for you" is our motto after all!

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