5310-01-499-3986 WASHER,FLAT Index 5940-01-499-3988 SPLICE,CONDUCTOR

National Stock Number:
5310-01-499-3987

Federal Supply Class:
5310

National Item Identification Number:
014993987

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:
BACW10BN4AC81205THE BOEING COMPANY
BACW10BN4ACZ03F0BOEING DEFENCE AUSTRALIA LTD
BACW10BN4ACZ8T75BOEING DEFENCE AUSTRALIA LTD


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.255 INCHES NOMINAL
OVERALL DIAMETER0.485 INCHES NOMINAL
MATERIALALUMINUM ALLOY 5052 OVERALL
PERIPHERAL SHAPE STYLEROUND
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSITEM IS FAA CERTIFIED
THICKNESS0.057 INCHES MINIMUM AND 0.069 INCHES MAXIMUM


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