5310-01-340-4641 WASHER,FLAT Index 5310-01-340-4643 WASHER,FLAT

National Stock Number:
5310-01-340-4642

Federal Supply Class:
5310

National Item Identification Number:
013404642

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:
4M36-0306776301THE BOEING COMPANY
KAC11286-40099-11S002CHARLES REED KNIGHT JR


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.375 INCHES NOMINAL
OVERALL DIAMETER0.560 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5059 MIL SPEC 1ST MATERIAL RESPONSE OR QQ-S-763 FED SPEC 1ST MATERIAL RESPONSE OR MIL-T-8506 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 302 OR STEEL COMP 304 OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENTPASSIVATE OVERALL
THICKNESS0.063 INCHES NOMINAL


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