5305-01-423-7139 SCREW,CAP,SOCKET HEAD Index 5340-01-423-7141 COVER,ACCESS

National Stock Number:
5310-01-423-7140

Federal Supply Class:
5310

National Item Identification Number:
014237140

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:
BMC-3479A PART 1323798BIDORO MFG CO PO BOX 103 HUNTINGTON STA NY 11746
BMC-3479C PART 1323798BIDORO MFG CO PO BOX 103 HUNTINGTON STA NY 11746
BMC-3479CCN PART 1323798BIDORO MFG CO PO BOX 103 HUNTINGTON STA NY 11746
BMC-3479CCN PART 136W889AMMCON CORP.


Techincal Specification:
MATERIALRUBBER SILICONE CLASS Q OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.312 INCHES NOMINAL
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER1.262 INCHES NOMINAL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
THICKNESS0.120 INCHES NOMINAL


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