5310-01-306-7876 WASHER,FLAT Index 5310-01-306-7878 WASHER,FLAT

National Stock Number:
5310-01-306-7877

Federal Supply Class:
5310

National Item Identification Number:
013067877

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:
16H1206-781755LOCKHEED MARTIN CORPORATION


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.563 INCHES MINIMUM AND 0.588 INCHES MAXIMUM
PERIPHERAL SHAPE STYLEROUND W/FLATS
PROPRIETARY CHARACTERISTICSPACS
SPECIAL FEATURESDIMENSION STATED ON 86 1/2X1/26. O. 1F-16A-4-27 F14 INDEX3-65
WIDTH ACROSS FLATS1.090 INCHES MINIMUM AND 1.150 INCHES MAXIMUM
THICKNESS0.242 INCHES MINIMUM AND 0.258 INCHES MAXIMUM


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