5307-01-018-5259 STUD,BEARING Index 5310-01-018-5261 WASHER,FLAT

National Stock Number:
5310-01-018-5260

Federal Supply Class:
5310

National Item Identification Number:
010185260

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:
9210303990INGERSOLL-RAND CO
S-11109-12209257TRELLEBORG SEALING SOLUTIONS US, INC.
S-11109-122-109275BAIRD DYNAMIC CO INC


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER1.125 INCHES NOMINAL
OVERALL DIAMETER1.312 INCHES NOMINAL
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.025 INCHES NOMINAL


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