NSN 5310-01-031-8387

Part Details | FLAT WASHER

5310-01-031-8387 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.

Alternate Parts: 2510072, 5310-01-031-8387, 01-031-8387, 5310010318387, 010318387

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53DEC 02, 197601-031-838713393 ( WASHER, FLAT )
REFERENCE DRAWINGS & PICTURES

RECTANGULAR

ROUND

ROUND

Cross Reference | NSN 5310-01-031-8387
Part Number Cage Code Manufacturer
251007210001NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT
Technical Data | NSN 5310-01-031-8387
Characteristic Specifications
HARDNESS RATING27.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM
HOLE DIAMETER0.190 INCHES MINIMUM AND 0.196 INCHES MAXIMUM
PERIPHERAL SHAPE STYLE ROUND
OVERALL DIAMETER0.407 INCHES MINIMUM AND 0.469 INCHES MAXIMUM
CENTER HOLE SHAPE STYLE ROUND
CROSS-SECTIONAL SHAPE STYLE RECTANGULAR
THICKNESS0.088 INCHES MINIMUM AND 0.098 INCHES MAXIMUM
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY SPECIAL QUALITY CONTROL TESTING FOR MK 48 TORPED0
CRITICALITY CODE JUSTIFICATIONZZZW