5310-01-211-1487 WASHER,FLAT Index 5310-01-211-1489 WASHER,LOCK

National Stock Number:
5310-01-211-1488

Federal Supply Class:
5310

National Item Identification Number:
012111488

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:
324633824876REAL ART PLASTIC AND METAL CO
324633882577RAYTHEON COMPANY


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.188 INCHES NOMINAL
OVERALL DIAMETER0.372 INCHES MINIMUM AND 0.378 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONL-P-509,TY 4,GR G-10,FORM R FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALPLASTIC EPOXY AND GLASS OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.090 INCHES NOMINAL


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