5310-01-304-7972 NUT,SELF-LOCKING,EXTENDED WASHER Index 5310-01-304-7974 WASHER,RECESSED

National Stock Number:
5310-01-304-7973

Federal Supply Class:
5310

National Item Identification Number:
013047973

Description:
WASHER,FLAT

Detail:
A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use SHIM. For items fabricated from ceramic or electrically rated materials by specification or industry standards use INSULATOR (1), WASHER. Excludes DISK, VALVE, graphite impregnated and lubricated items.


Manufacturer Information:
3251588P110001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER1.010 INCHES MINIMUM AND 1.020 INCHES MAXIMUM
OUTSIDE LEFT CORNER CHAMFER ANGLE45.0 DEGREES NOMINAL
OUTSIDE RIGHT CORNER CHAMFER ANGLE45.0 DEGREES NOMINAL
OVERALL DIAMETER3.190 INCHES MINIMUM AND 3.250 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAISI 4140 ASSN STD 1ST MATERIAL RESPONSE OR QQ-S-626 FED SPEC 2ND MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 4140 OVERALL
PERIPHERAL SHAPE STYLEROUND
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSAS DIFFERENTIATED BY SPECIAL TEST FEATURES
SPECIAL TEST FEATURESNAVORD OD36190
SURFACE FINISH63.0 MICROINCHES TOP
SURFACE FINISH125.0 MICROINCHES COUNTERBORE FACE
SURFACE FINISH125.0 MICROINCHES INNER
SURFACE FINISH63.0 MICROINCHES BOTTOM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-P-16232,TYPE Z,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPHOSPHATE OVERALL
THICKNESS0.470 INCHES MINIMUM AND 0.530 INCHES MAXIMUM


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