5305-00-845-6557 SCREW,CAP,SOCKET HEAD Index 5306-00-845-6559 BOLT,MACHINE

National Stock Number:
5310-00-845-6558

Federal Supply Class:
5310

National Item Identification Number:
008456558

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:
10594609-1318876U S ARMY AVIATION AND MISSILE COMMAND
B4-600141ROLLER BEARING CO OF AMERICA, INC
B4600141ROLLER BEARING CO OF AMERICA, INC


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.125 INCHES MINIMUM AND 0.130 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION-QQ-S-764 COND A,COLD ROLLED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL DIAMETER0.188 INCHES NOMINAL
MATERIALSTEEL COMP 303 OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION-MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
THICKNESS0.012 INCHES MINIMUM AND 0.016 INCHES MAXIMUM


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