5310-00-939-0903 WASHER,LOCK Index 5305-00-939-0906 SCREW,CAP,HEXAGON HEAD

National Stock Number:
5310-00-939-0904

Federal Supply Class:
5310

National Item Identification Number:
009390904

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:
2W1-13-10-2543999THE BOEING COMPANY


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.203 INCHES MINIMUM AND 0.213 INCHES MAXIMUM
OVERALL DIAMETER0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 1010 OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
PERIPHERAL SHAPE STYLEROUND
SPECIFICATION/STANDARD DATA43999-2W1 MANUFACTURERS STANDARD
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
THICKNESS0.025 INCHES NOMINAL


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