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MS51831, KNH, NAS1395, RKK > RKK - Heavy Duty & Thickwall - Carbon Steel - Inch

Keensert® Inch & Mil-Spec Heavy Duty Inserts - RKK Series, Locking and Non-Locking - Steel

Looking for Steel Keenserts®?

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

Stock sizes include 8-32 through 1-1/2-6 in Carbon Steel.

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.

Trademark Notice & Disclaimer

KEENSERTS® is a registered trademark of Huck Patents, Inc. and Howmet Aerospace Inc. MF Supply is an independent distributor not affiliated with or endorsed by the trademark owners. Any reference to KEENSERTS® is strictly for descriptive compatibility and cross-referencing. Unless explicitly noted, products offered are functionally equivalent alternatives, not original KEENSERTS® brand inserts.

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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RKK8-32-MF RKK8-32-MF Equivalent | 8-32 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $7.04 / Quantity Discounts Available
RKK10-24-MF RKK10-24-MF Equivalent | 10-24 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $4.32 / Quantity Discounts Available
RKK10-32-MF RKK10-32-MF Equivalent | 10-32 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $4.30 / Quantity Discounts Available
RKK5/16-18-MF RKK5/16-18-MF Equivalent | 5/16-18 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $4.72 / Quantity Discounts Available
RKK5/16-24-MF RKK5/16-24-MF Equivalent | 5/16-24 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $5.34 / Quantity Discounts Available
RKK3/8-16-MF RKK3/8-16-MF Equivalent | 3/8-16 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $6.48 / Quantity Discounts Available
RKK3/8-24-MF RKK3/8-24-MF Equivalent | 3/8-24 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $5.48 / Quantity Discounts Available
RKK7/16-MF RKK7/16-14-MF Equivalent | 7/16-14 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $7.04 / Quantity Discounts Available
RKK7/16-20-MF RKK7/16-20-MF Equivalent | 7/16-20 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $7.04 / Quantity Discounts Available
RKK1/2-13-MF RKK1/2-13-MF Equivalent | 1/2-13 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $7.84 / Quantity Discounts Available
RKK1/2-20-MF RKK1/2-20-MF Equivalent | 1/2-20 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $8.02 / Quantity Discounts Available
RKK1/4-20-MF RKK1/4-20-MF Equivalent | 1/4-20 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $4.34 / Quantity Discounts Available
RKK1/4-28-MF RKK1/4-28-MF Equivalent | 1/4-28 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $4.40 / Quantity Discounts Available
RKK9/16-12-MF RKK9/16-12-MF Equivalent | 9/16-12 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $13.62 / Quantity Discounts Available
RKK9/16-18-MF RKK9/16-18-MF Equivalent | 9/16-18 Heavy Duty Keensert® Alternative Carbon Steel
Price: $15.82 Get a custom quote today!
RKK5/8-11-MF RKK5/8-11-MF Equivalent | 5/8-11 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $14.52 / Quantity Discounts Available
RKK5/8-18-MF RKK5/8-18-MF Equivalent | 5/8-18 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $14.52 / Quantity Discounts Available
RKK3/4-10-MF RKK3/4-10-MF Equivalent | 3/4-10 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $20.16 / Quantity Discounts Available
RKK3/4-16-MF RKK3/4-16-MF Equivalent | 3/4-16 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $23.52 / Quantity Discounts Available
RKK7/8-9-MF RKK7/8-9-MF Equivalent | 7/8-9 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $29.26 / Quantity Discounts Available
RKK7/8-14-MF RKK7/8-14-MF Equivalent | 7/8-14 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $51.18 / Quantity Discounts Available
RKK1-8-MF RKK1-8-MF Equivalent | 1-8 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $52.08 / Quantity Discounts Available
RKK1-12-MF RKK1-12-MF Equivalent | 1-12 Heavy Duty Keensert® Alternative Carbon Steel
Price: $68.42 Get a custom quote today!
RKK1-14-MF RKK1-14-MF Equivalent | 1-14 Heavy Duty Keensert® Alternative Carbon Steel
Price: $68.42 Get a custom quote today!
RKK1-1/87-MF RKK1-1/8-7-MF Equivalent | 1-1/8-7 Heavy Duty Keensert® Alternative Carbon Steel
Price: $169.30 Get a custom quote today!
RKK1-1/8-12-MF RKK1-1/8-12-MF Equivalent | 1-1/8-12 Heavy Duty Keensert® Alternative Carbon Steel
Get a custom quote today!
RKK1-1/4-7-MF RKK1-1/4-7-MF Equivalent | 1-1/4-7 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $178.81 / Quantity Discounts Available
RKK1-1/4-12-MF RKK1-1/4-12-MF Equivalent | 1-1/4-12 Heavy Duty Keensert® Alternative Carbon Steel
Price Each: $70.13 / Quantity Discounts Available
RKK1-1/2-6-MF RKK1-1/2-6-MF Equivalent | 1-1/2-6 Heavy Duty Keensert® Alternative Carbon Steel
Price: $330.07 Get a custom quote today!
RKK1-1/2-12-MF RKK1-1/2-12-MF Equivalent | 1-1/2-12 Heavy Duty Keensert® Alternative Carbon Steel
Get a custom quote today!
   
 
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