5310-00-132-1826 WASHER,FLAT Index 5306-00-132-1830 BOLT,SHOULDER

National Stock Number:
5310-00-132-1827

Federal Supply Class:
5310

National Item Identification Number:
001321827

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:
4G13773-101A02068SUMNER INDUSTRIES INC
4G13773-101A06671BETA CORP
4G13773-101A65506FEDERAL INDUSTRIES, INC.
4G13773-101A6Z800A AND M AEROSPACE, INC.
4G13773-101A98897LOCKHEED MARTIN CORP


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CRITICALITY CODE JUSTIFICATIONFEAT
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.405 INCHES MINIMUM AND 0.410 INCHES MAXIMUM
OVERALL DIAMETER0.680 INCHES MINIMUM AND 0.685 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7720,COND B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 302 OVERALL
PERIPHERAL SHAPE STYLEROUND
SPECIAL FEATURESC-5 LANDING GEAR SPECIFIC
SURFACE FINISH63.0 MICROINCHES BOTTOM
SURFACE FINISH63.0 MICROINCHES TOP
THICKNESS0.050 INCHES MINIMUM AND 0.055 INCHES MAXIMUM


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