5305-00-721-7398 SCREW,MACHINE Index 5310-00-721-7402 WASHER,FLAT

National Stock Number:
5310-00-721-7400

Federal Supply Class:
5310

National Item Identification Number:
007217400

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:
618882GB99166SUNDSTRAND CORP SUNDSTRAND HYDRAULICS DIV
618882GB99167HAMILTON SUNDSTRAND CORPORATION
LD153-0011-001143999THE BOEING COMPANY


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.203 INCHES MINIMUM AND 0.233 INCHES MAXIMUM
OVERALL DIAMETER0.433 INCHES MINIMUM AND 0.458 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 302 OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENTPASSIVATE OVERALL
THICKNESS0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM


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