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MS20500-428

Military Standard Locking Hexagon Nut Self

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Description

Nut

Specifications

Bearing Surface Finish 125.0 microinches
Bearing Surface Type Chamfered
Countersink Angle 88.0 degrees nut
Dimension C 0.273 in
Dimension C Tolerance 0.020 in
Features Heat Resistant
Finish Silver Plate
Industry Standards/Certification MIL-S-8879
Locking Feature Prevailing torque all metal design
Material CRES
Maximum Dimension H 0.328 in
Maximum Dimension W 0.439 in
Minimum Dimension H 0.280 in
Minimum Dimension N 0.488 in
Minimum Dimension W 0.430 in
NIIN 00-298-2747
NSN 5310-00-298-2747
Nut Height Between 0.280 inches and 0.328 inches
Nut Style Hexagon
Precious Material Silver
Precious Material And Location All surfaces silver
Service Temperature 1200 ºF
Surface Treatment Silver
Surface Treatment Specification Ams 2410 assn standard single treatment response
Temperature Rating 1200.0 degrees fahrenheit
Thread Class 3b
Thread Direction Right-hand
Thread Qty 28
Thread Qty Per Inch (tpi) 28
Thread Series Unjf (fine thread with external controlled root radius)
Thread Size 0.250, 1/4-28
Weight 0.007 lb
Width Across Flats Between 0.430 inches and 0.439 inches

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