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MS21055-3K

Military Standard Nut

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Description

Thread Size: 1/4", Nut Length: 5/8", Nut Height: 1/4"

Specifications

Counterbore Diameter 0.194 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
Lubrication Soluble lubricant
Material Steel
Mounting Hole Arrangement Style 2 holes
Mounting Hole Countersink Angle 98.0 degrees minimum and 102.0 degrees maximum
Mounting Hole Diameter 0.098 inches minimum and 0.103 inches maximum
Mounting Provision Location Opposite nut projection side
Nut Counterbore Depth 0.062 inches minimum nut
Nut Height 0.250 inches maximum
Nut Length 0.653 inches maximum
Nut Mounting Provision Countersunk holes
Nut Style Plate
Plate Thickness 0.047 inches maximum
Surface Treatment Cadmium and chromate
Surface Treatment Specification Qq-p-416,ty 2,cl 2 fed spec all treatment responses
Temperature Rating 450.0 deg fahrenheit maximum
Thread Class 3b
Thread Direction Right-hand
Thread Qty 32
Thread Qty Per Inch (tpi) 32
Thread Series UNJF
Thread Size 0.190

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