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NAS1423C7LH

Flat Washer

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Description

Thread Size: 7/16", Nut Height: 5/32", Head Width: 5/8

Specifications

Bearing Surface Finish 125.0 microinches
Bearing Surface Type Chamfered
Countersink Angle 109.0 degrees minimum both ends and 111.0 degrees maximum both ends
Drilled Hole Diameter 0.045 inches minimum and 0.050 inches maximum
Hole Configuration Style Configuration b
Hole Type And Quantity 3 drilled
Material Iron
Material Specification Ams 5525 assn std single material response or ams 5731 assn std single material response or ams 5732 assn std single material response
Nut Height 0.146 inches minimum and 0.166 inches maximum
Nut Style Hexagon
Specification Data 80205-nas1423 professional/industrial association standard
Surface Treatment Passivate
Surface Treatment Specification Qq-p-35 fed spec single treatment response
Thread Class 3b
Thread Direction Left-hand
Thread Qty Per Inch (tpi) 20
Thread Series UNJF
Thread Size 0.4375
Width Across Flats 0.615 inches minimum and 0.627 inches maximum

Cross-reference

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