5310-01-222-5887 WASHER,FLAT Index 5330-01-222-5889 RETAINER,PACKING

National Stock Number:
5310-01-222-5888

Federal Supply Class:
5310

National Item Identification Number:
012225888

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:
935982219200US ARMY ARDEC RDECOM


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
COLORGREEN OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER1.520 INCHES NOMINAL
OVERALL DIAMETER2.250 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM-A576 ASSN STD ALL MATERIAL RESPONSES OVERALL
MATERIALSTEEL COMP 1008 OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-STD-171,FINISH 20.24 MIL STD ALL TREATMENT RESPONSES OVERALL
SURFACE TREATMENTPAINT OVERALL
THICKNESS0.250 INCHES NOMINAL


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