Spec hardware, served at warp speed.

nuts › self-locking nutplates

MS21076-4R

Military Standard Locking Nutplate Self

View quote list → Saved parts →

Description

MS21076 series nut, MS21076-4N is the new call out

Specifications

Center To Center Distance Between Mounting Holes Along Length 0.560 inches minimum and 0.564 inches maximum
Counterbore Diameter 0.254 inches nominal nut
Distance From Aperture Center To Mounting Hole Center 0.276 inches minimum and 0.286 inches maximum
Features Provided Floating nut
Hardness Rating 49.0 rockwell c maximum
Locking Feature Prevailing torque all metal design
Material Iron
Material Specification Ams 5525 assn std single material response or ams 5737 assn std single material response or ams 5732 assn std single material response
Mounting Hole Arrangement Style 2 holes
Mounting Hole Diameter 0.098 inches minimum and 0.103 inches maximum
Nut Counterbore Depth 0.062 inches minimum nut
Nut Height 0.281 inches maximum
Nut Length 0.801 inches maximum
Nut Mounting Provision Straight holes
Nut Style Plate
Plate Thickness 0.027 inches minimum and 0.090 inches maximum
Plate Width 0.350 inches minimum and 0.500 inches maximum
Precious Material Silver
Surface Treatment Silver
Surface Treatment Specification Ams 2410 assn std single treatment response
Temperature Rating 800.0 deg fahrenheit
Thread Class 3b
Thread Direction Right-hand
Thread Qty 28
Thread Qty Per Inch (tpi) 28
Thread Series UNJF
Thread Size 0.250

Other sizes

Parts that share this base number, ordered by size. Always verify the full specification before substituting.

Cross-reference

Similar parts

Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.

Looking for a specific part? Use the cross-reference lookup.

Catalog data updated 2026-07-05. Report a data error