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MS21045-3

Military Standard Locking Hexagon Nut Self

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Description

Nut

Specifications

Alternate Part Number 404-887
Bearing Surface Finish 125.0 microinches, 125.0 µin
Bearing Surface Type Chamfered Faced, Chamfered or washer faced
Countersink Angle 88.0 degrees nominal nut
Features Regular Height
Industry Standards/Certification MS21045
Locking Feature Prevailing Torque All Metal Design
Lubricant Non-Dry Lubricant
Lubrication Soluble Lubricant
Material Steel
Maximum Dimension A 0.250 in
Maximum Dimension B 0.376 in
Maximum Nut Height 0.250 in
Maximum Width Across Flats 0.376 in
Minimum Dimension A 0.208 in
Minimum Dimension B 0.367 in
Minimum Dimension C 0.410 in
Minimum Dimension F 0.085 in
Minimum Nut Height 0.208 in
Minimum Width Across Flats 0.367 in
NIIN 00-061-7326
NSN 5310-00-061-7326
Nominal Countersunk Angle (Nut) 88.0 º
Nominal Temperature Rating 450.0 ºF
Nominal Thread Size 0.190 in
Nut Height 0.208 inches minimum and 0.250 inches maximum
Nut Style Hexagon
Service Temperature 450 ºF
Surface Treatment Cadmium
Surface Treatment Document and Classification QQ-P-416,TY 2,CL 3 FED SPEC Single Treatment Response
Surface Treatment Specification Qq-p-416,ty 2,cl 3 fed spec single treatment response
Temperature Rating 450.0 deg fahrenheit
Thread Class 3b
Thread Direction Right-hand
Thread MIL-S-8879 0.1900-32
Thread Qty 32
Thread Qty Per Inch (tpi) 32
Thread Quantity per Inch 32
Thread Series UNJF
Thread Size 0.190, 10-32
Type Self-Locking Nut
Weight 0.0044 lb
Width Across Flats 0.367 inches minimum and 0.376 inches maximum

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