Home > Inserts for Manufacturers > Keenserts® for Manufacturers > Keenserts® - Metric Keylocking Inserts > Metric Keensert Cross Reference - 4140 Alloy, A286, & Mil-Spec

Metric Keensert® Cross Reference - 4140 Alloy, A286, & Mil-Spec

Here at MF Supply, we are a distributor for the most popular Metric Keensert® style inserts. One of our special skills is providing functional equivalents to expensive brand name fasteners. This helps our customers save money and reduce long lead times.

Use CTRL-F to find the part number you need and cross it to an equivalent.

Then, click the "More Info" link next to your part number or use the search bar to see our e-commerce offerings and buy online or request a quote.

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!
METRIC MINIATURE INSERTS - NON-LOCKING - 4140 ALLOY STEEL (NA0146 SERIES)
MIL-SPEC NA SPEC CHRISLYNN FAIRCHILD P/N I.D. O.D. LENGTH MATERIAL MORE INFO
- NA0146-020 80382 KNCM 2x0.4MX M2 x 0.4 M4 x 0.7 3 4140 ALLOY View Product
- NA0146-025 80383 KNCM 2.5x0.45MX M2.5 x 0.45 M4.5 x 0.75 3.81 4140 ALLOY View Product
- NA0146-030 80384 KNCM 3x0.5MX M3 x 0.5 M5 x 0.8 4.25 4140 ALLOY View Product
- NA0146-040 80386 KNCM 4x0.7MX M4 x 0.7 M6 x 0.75 5.25 4140 ALLOY View Product
METRIC THIN WALL INSERTS - NON-LOCKING - 4140 ALLOY STEEL (NA0148 SERIES)
MIL-SPEC NA SPEC CHRISLYNN FAIRCHILD P/N I.D. O.D. LENGTH MATERIAL MORE INFO
- NA0148-050 80351 KNM 5x0.8MX M5 x .8 M8 x 1.25 8 4140 ALLOY View Product
- NA0148-060 80352 KNM 6x1.0MX M6 x 1 M10 x 1.25 10 4140 ALLOY View Product
- - 80353 KNM 8x1.25MX M8 x 1.25 M12 x 1.25 12 4140 ALLOY View Product
- NA0148-080 80553 KNM 8x1.0MX M8 x 1 M12 x 1.25 12 4140 ALLOY View Product
- - 80355 KNM 10x1.5MX M10 x 1.5 M14 x 1.5 14 4140 ALLOY View Product
- NA0148-100 80555 KNM 10x1.25MX M10 x 1.25 M14 x 1.5 14 4140 ALLOY View Product
- - 80356 KNM 12x1.75MX M12 x 1.75 M16 x 1.5 16 4140 ALLOY View Product
- NA0148-120 80556 KNM 12x1.25MX M12 x 1.25 M16 x 1.5 16 4140 ALLOY View Product
METRIC HEAVY DUTY INSERTS - NON-LOCKING - 4140 ALLOY STEEL (NA0150 SERIES)
MIL-SPEC NA SPEC CHRISLYNN FAIRCHILD P/N I.D. O.D. LENGTH MATERIAL MORE INFO
- NA0150-040 80363 KNHM 4x0.7MX M4 x .7 M8 x 1.25 8 4140 ALLOY View Product
- NA0150-050 80364 KNHM 5x0.8MX M5 x .8 M10 x 1.25 10 4140 ALLOY View Product
- NA0150-060 80365 KNHM 6x1MX M6 x 1 M12 x 1.25 12 4140 ALLOY View Product
- - 80366 KNHM 8x1.25MX M8 x 1.25 M14 x 1.5 14 4140 ALLOY View Product
- NA0150-080 80566 KNHM 8x1MX M8 x 1 M14 x 1.5 14 4140 ALLOY View Product
- - 80367 KNHM 10x1.5MX M10 x 1.5 M16 x 1.5 16 4140 ALLOY View Product
- NA0150-100 80567 KNHM 10x1.25MX M10 x 1.25 M16 x 1.5 16 4140 ALLOY View Product
- - 80369 KNHM 12x1.75MX M12 x 1.75 M18 x 1.5 18 4140 ALLOY View Product
- NA0150-120 80569 KNHM 12x1.25MX M12 x 1.25 M18 x 1.5 18 4140 ALLOY View Product
- - 80370 KNHM 14x2MX M14 x 2 M20 x 1.5 20 4140 ALLOY View Product
- NA0150-140 80570 KNHM 14x1.5MX M14 x 1.5 M20 x 1.5 20 4140 ALLOY View Product
- - 80371 KNHM 16x2MX M16 x 2 M22 x 1.5 22 4140 ALLOY View Product
- NA0150-160 80571 KNHM 16x1.5MX M16 x 1.5 M22 x 1.5 22 4140 ALLOY View Product
- NA0150-180 80572 KNHM 18x1.5MX M18 x 1.5 M24 x 1.5 24 4140 ALLOY View Product
- - 80373 KNHM 20x2.5MX M20 x 2.5 M30 x 2 30 4140 ALLOY View Product
- NA0150-200 80573 KNHM 20x1.5MX M20 x 1.5 M30 x 2 30 4140 ALLOY View Product
- NA0150-220 80574 KNHM 22x1.5MX M22 x 1.5 M32 x 2 32 4140 ALLOY View Product
- - 80375 KNHM 24x3MX M24 x 3 M33 x 2 33 4140 ALLOY View Product
- NA0150-240 80575 KNHM 24x2MX M24 x 2 M33 x 2 33 4140 ALLOY View Product
METRIC MINIATURE INSERTS - LOCKING - 4140 ALLOY STEEL (NA0146 SERIES)
MIL-SPEC NA SPEC CHRISLYNN FAIRCHILD P/N I.D. O.D. LENGTH MATERIAL MORE INFO
- - 81382 KNCML 2x0.4MX M2 x 0.4 M4 x 0.7 3 4140 ALLOY View Product
- - 81383 KNCML 2.5x0.45MX M2.5 x 0.45 M4.5 x 0.75 3.81 4140 ALLOY View Product
- NA0146-E030 81384 KNCML 3x0.5MX M3 x 0.5 M5 x 0.8 4.25 4140 ALLOY View Product
- NA0146-E040 81386 KNCML 4x0.7MX M4 x 0.7 M6 x 0.75 5.25 4140 ALLOY View Product
METRIC THIN WALL INSERTS - LOCKING - 4140 ALLOY STEEL (NA0148 SERIES)
MIL-SPEC NA SPEC CHRISLYNN FAIRCHILD P/N I.D. O.D. LENGTH MATERIAL MORE INFO
- NA0148-E050 81351 KNML 5x0.8MX M5 x .8 M8 x 1.25 8 4140 ALLOY View Product
- NA0148-E060 81352 KNML 6x1.0MX M6 x 1 M10 x 1.25 10 4140 ALLOY View Product
- - 81353 KNML 8x1.25MX M8 x 1.25 M12 x 1.25 12 4140 ALLOY View Product
- NA0148-E080 81553 KNML 8x1.0MX M8 x 1 M12 x 1.25 12 4140 ALLOY View Product
- - 81355 KNML 10x1.5MX M10 x 1.5 M14 x 1.5 14 4140 ALLOY View Product
- NA0148-E100 81555 KNML 10x1.25MX M10 x 1.25 M14 x 1.5 14 4140 ALLOY View Product
- - 81356 KNML 12x1.75MX M12 x 1.75 M16 x 1.5 16 4140 ALLOY View Product
- NA0148-E120 81556 KNML 12x1.25MX M12 x 1.25 M16 x 1.5 16 4140 ALLOY View Product
METRIC HEAVY DUTY INSERTS - LOCKING- 4140 ALLOY STEEL (NA0150 SERIES)
MIL-SPEC NA SPEC CHRISLYNN FAIRCHILD P/N I.D. O.D. LENGTH MATERIAL MORE INFO
- NA0150-E040 81363 KNHML 4x0.7MX M4 x .7 M8 x 1.25 8 4140 ALLOY View Product
- NA0150-E050 81364 KNHML 5x0.8MX M5 x .8 M10 x 1.25 10 4140 ALLOY View Product
- NA0150-E060 81365 KNHML 6x1MX M6 x 1 M12 x 1.25 12 4140 ALLOY View Product
- - 81366 KNHML 8x1.25MX M8 x 1.25 M14 x 1.5 14 4140 ALLOY View Product
- NA0150-E080 81566 KNHML 8x1MX M8 x 1 M14 x 1.5 14 4140 ALLOY View Product
- - 81367 KNHML 10x1.5MX M10 x 1.5 M16 x 1.5 16 4140 ALLOY View Product
- NA0150-E100 81567 KNHML 10x1.25MX M10 x 1.25 M16 x 1.5 16 4140 ALLOY View Product
- - 81369 KNHML 12x1.75MX M12 x 1.75 M18 x 1.5 18 4140 ALLOY View Product
- NA0150-E120 81569 KNHML 12x1.25MX M12 x 1.25 M18 x 1.5 18 4140 ALLOY View Product
- - 81370 KNHML 14x2MX M14 x 2 M20 x 1.5 20 4140 ALLOY View Product
- NA0150-E140 81570 KNHML 14x1.5MX M14 x 1.5 M20 x 1.5 20 4140 ALLOY View Product
- - 81371 KNHML 16x2MX M16 x 2 M22 x 1.5 22 4140 ALLOY View Product
- NA0150-E160 81571 KNHML 16x1.5MX M16 x 1.5 M22 x 1.5 22 4140 ALLOY View Product
- NA0150-E180 81572 KNHML 18x1.5MX M18 x 1.5 M24 x 1.5 24 4140 ALLOY View Product
- - 81373 KNHML 20x2.5MX M20 x 2.5 M30 x 2 30 4140 ALLOY View Product
- NA0150-E200 81573 KNHML 20x1.5MX M20 x 1.5 M30 x 2 30 4140 ALLOY View Product
- NA0150-E220 81574 KNHML 22x1.5MX M22 x 1.5 M32 x 2 32 4140 ALLOY View Product
- - 81375 KNHML 24x3MX M24 x 3 M33 x 2 33 4140 ALLOY View Product
- NA0150-E240 81575 KNHML 24x2MX M24 x 2 M33 x 2 33 4140 ALLOY View Product
METRIC MINIATURE INSERTS - NON-LOCKING - A286 (NA0147 SERIES)
MIL-SPEC NA SPEC CHRISLYNN FAIRCHILD P/N I.D. O.D. LENGTH MATERIAL MORE INFO
- NA0147-020 78382 KNCM 2x0.4T M2 x 0.4 M4 x 0.7 3 A286 CRES View Product
- NA0147-025 78383 KNCM 2.5x0.45T M2.5 x 0.45 M4.5 x 0.75 3.81 A286 CRES View Product
- NA0147-030 78384 KNCM 3x0.5T M3 x 0.5 M5 x 0.8 4.25 A286 CRES View Product
- NA0147-040 78386 KNCM 4x0.7T M4 x 0.7 M6 x 0.75 5.25 A286 CRES View Product
METRIC THIN WALL INSERTS - NON-LOCKING - A286 (NA0149 SERIES)
MIL-SPEC NA SPEC CHRISLYNN FAIRCHILD P/N I.D. O.D. LENGTH MATERIAL MORE INFO
- NA0149-050 78351 KNM 5x0.8T M5 x .8 M8 x 1.25 8 A286 CRES View Product
- NA0149-060 78352 KNM 6x1.0T M6 x 1 M10 x 1.25 10 A286 CRES View Product
- - 78353 KNM 8x1.25T M8 x 1.25 M12 x 1.25 12 A286 CRES View Product
- NA0149-080 78553 KNM 8x1.0T M8 x 1 M12 x 1.25 12 A286 CRES View Product
- - 78355 KNM 10x1.5T M10 x 1.5 M14 x 1.5 14 A286 CRES View Product
- NA0149-100 78555 KNM 10x1.25T M10 x 1.25 M14 x 1.5 14 A286 CRES View Product
- - 78356 KNM 12x1.75T M12 x 1.75 M16 x 1.5 16 A286 CRES View Product
- NA0149-120 78556 KNM 12x1.25T M12 x 1.25 M16 x 1.5 16 A286 CRES View Product
METRIC HEAVY DUTY INSERTS - NON-LOCKING - A286 (NA0151 SERIES)
MIL-SPEC NA SPEC CHRISLYNN FAIRCHILD P/N I.D. O.D. LENGTH MATERIAL MORE INFO
- NA0151-040 78363 KNHM 4x0.7T M4 x .7 M8 x 1.25 8 A286 CRES View Product
- NA0151-050 78364 KNHM 5x0.8T M5 x .8 M10 x 1.25 10 A286 CRES View Product
- NA0151-060 78365 KNHM 6x1T M6 x 1 M12 x 1.25 12 A286 CRES View Product
- - 78366 KNHM 8x1.25T M8 x 1.25 M14 x 1.5 14 A286 CRES View Product
- NA0151-080 78566 KNHM 8x1T M8 x 1 M14 x 1.5 14 A286 CRES View Product
- - 78367 KNHM 10x1.5T M10 x 1.5 M16 x 1.5 16 A286 CRES View Product
- NA0151-100 78567 KNHM 10x1.25T M10 x 1.25 M16 x 1.5 16 A286 CRES View Product
- - 78369 KNHM 12x1.75T M12 x 1.75 M18 x 1.5 18 A286 CRES View Product
- NA0151-120 78569 KNHM 12x1.25T M12 x 1.25 M18 x 1.5 18 A286 CRES View Product
- - 78370 KNHM 14x2T M14 x 2 M20 x 1.5 20 A286 CRES View Product
- NA0151-140 78570 KNHM 14x1.5T M14 x 1.5 M20 x 1.5 20 A286 CRES View Product
- - 78371 KNHM 16x2T M16 x 2 M22 x 1.5 22 A286 CRES View Product
- NA0151-160 78571 KNHM 16x1.5T M16 x 1.5 M22 x 1.5 22 A286 CRES View Product
- NA0151-180 78572 KNHM 18x1.5T M18 x 1.5 M24 x 1.5 24 A286 CRES View Product
- - 78373 KNHM 20x2.5T M20 x 2.5 M30 x 2 30 A286 CRES View Product
- NA0151-200 78573 KNHM 20x1.5T M20 x 1.5 M30 x 2 30 A286 CRES View Product
- NA0151-220 78574 KNHM 22x1.5T M22 x 1.5 M32 x 2 32 A286 CRES View Product
- - 78375 KNHM 24x3T M24 x 3 M33 x 2 33 A286 CRES View Product
- NA0151-240 78575 KNHM 24x2T M24 x 2 M33 x 2 33 A286 CRES View Product
METRIC MINIATURE INSERTS - LOCKING - A286 (NA0147 SERIES)
MIL-SPEC NA SPEC CHRISLYNN FAIRCHILD P/N I.D. O.D. LENGTH MATERIAL MORE INFO
- - 79382 KNCML 2x0.4T M2 x 0.4 M4 x 0.7 3 A286 CRES View Product
- - 79383 KNCML 2.5x0.45T M2.5 x 0.45 M4.5 x 0.75 3.81 A286 CRES View Product
- NA0147-E030 79384 KNCML 3x0.5T M3 x 0.5 M5 x 0.8 4.25 A286 CRES View Product
- NA0147-E040 79386 KNCML 4x0.7T M4 x 0.7 M6 x 0.75 5.25 A286 CRES View Product
METRIC THIN WALL INSERTS - LOCKING - A286 (NA0149 SERIES)
MIL-SPEC NA SPEC CHRISLYNN FAIRCHILD P/N I.D. O.D. LENGTH MATERIAL MORE INFO
- NA0149-E050 79351 KNML 5x0.8T M5 x .8 M8 x 1.25 8 A286 CRES View Product
- NA0149-E060 79352 KNML 6x1.0T M6 x 1 M10 x 1.25 10 A286 CRES View Product
- - 79353 KNML 8x1.25T M8 x 1.25 M12 x 1.25 12 A286 CRES View Product
- NA0149-E080 79553 KNML 8x1.0T M8 x 1 M12 x 1.25 12 A286 CRES View Product
- - 79355 KNML 10x1.5T M10 x 1.5 M14 x 1.5 14 A286 CRES View Product
- NA0149-E100 79555 KNML 10x1.25T M10 x 1.25 M14 x 1.5 14 A286 CRES View Product
- - 79356 KNML 12x1.75T M12 x 1.75 M16 x 1.5 16 A286 CRES View Product
- NA0149-E120 79556 KNML 12x1.25T M12 x 1.25 M16 x 1.5 16 A286 CRES View Product
METRIC HEAVY DUTY INSERTS - LOCKING - A286 (NA0151 SERIES)
MIL-SPEC NA SPEC CHRISLYNN FAIRCHILD P/N I.D. O.D. LENGTH MATERIAL MORE INFO
- NA0151-E040 79363 KNHML 4x0.7T M4 x .7 M8 x 1.25 8 A286 CRES View Product
- NA0151-E050 79364 KNHML 5x0.8T M5 x .8 M10 x 1.25 10 A286 CRES View Product
- NA0151-E060 79365 KNHML 6x1T M6 x 1 M12 x 1.25 12 A286 CRES View Product
- - 79366 KNHML 8x1.25T M8 x 1.25 M14 x 1.5 14 A286 CRES View Product
- NA0151-E080 79566 KNHML 8x1T M8 x 1 M14 x 1.5 14 A286 CRES View Product
- - 79367 KNHML 10x1.5T M10 x 1.5 M16 x 1.5 16 A286 CRES View Product
- NA0151-E100 79567 KNHML 10x1.25T M10 x 1.25 M16 x 1.5 16 A286 CRES View Product
- - 79369 KNHML 12x1.75T M12 x 1.75 M18 x 1.5 18 A286 CRES View Product
- NA0151-E120 79569 KNHML 12x1.25T M12 x 1.25 M18 x 1.5 18 A286 CRES View Product
- - 79370 KNHML 14x2T M14 x 2 M20 x 1.5 20 A286 CRES View Product
- NA0151-E140 79570 KNHML 14x1.5T M14 x 1.5 M20 x 1.5 20 A286 CRES View Product
- - 79371 KNHML 16x2T M16 x 2 M22 x 1.5 22 A286 CRES View Product
- NA0151-E160 79571 KNHML 16x1.5T M16 x 1.5 M22 x 1.5 22 A286 CRES View Product
- NA0151-E180 79572 KNHML 18x1.5T M18 x 1.5 M24 x 1.5 24 A286 CRES View Product
- - 79373 KNHML 20x2.5T M20 x 2.5 M30 x 2 30 A286 CRES View Product
- NA0151-E200 79573 KNHML 20x1.5T M20 x 1.5 M30 x 2 30 A286 CRES View Product
- NA0151-E220 79574 KNHML 22x1.5T M22 x 1.5 M32 x 2 32 A286 CRES View Product
- - 79375 KNHML 24x3T M24 x 3 M33 x 2 33 A286 CRES View Product
- NA0151-E240 79575 KNHML 24x2T M24 x 2 M33 x 2 33 A286 CRES View Product