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MS21052-08

Military Standard One Lug Locknut Plate

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Description

Thread Size: 1/8", Nut Length: 7/8", Nut Height: 1/4"

Specifications

Center To Center Distance Between Mounting Holes Along Length 0.310 inches minimum and 0.314 inches maximum
Counterbore Diameter 0.168 inches minimum nut
Distance From Aperture Center To Mounting Hole Center 0.339 inches minimum and 0.349 inches maximum
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 5732 assn std single material response or ams 5737 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 0.250 inches maximum
Nut Length 0.935 inches maximum
Nut Mounting Provision Straight holes
Nut Style Plate
Plate Thickness 0.047 inches maximum
Plate Width 0.277 inches minimum and 0.297 inches maximum
Precious Material Silver
Precious Material And Location All surfaces silver
Surface Treatment Silver
Surface Treatment Specification Ams 2410 assn std single treatment response
Temperature Rating 800.0 deg fahrenheit maximum
Thread Class 3b
Thread Direction Right-hand
Thread Qty 32
Thread Qty Per Inch (tpi) 32
Thread Series UNJC
Thread Size 0.164

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