5310-00-350-4988 WASHER,FLAT Index 5970-00-350-4990 WASHER

National Stock Number:
5310-00-350-4989

Federal Supply Class:
5310

National Item Identification Number:
003504989

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:
360559S7S823040FORD MOTOR CO FORD PARTS AND SERVICE DIV GOVERNMENT PART SALES
360559S7S857526FORD MOTOR COMPANY
705873619207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM
360559S823040FORD MOTOR CO FORD PARTS AND SERVICE DIV GOVERNMENT PART SALES
360559S857526FORD MOTOR COMPANY


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING75.0 ROCKWELL B MINIMUM AND 85.0 ROCKWELL B MAXIMUM
HOLE DIAMETER0.510 INCHES MINIMUM AND 0.520 INCHES MAXIMUM
OVERALL DIAMETER0.860 INCHES MINIMUM AND 0.870 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5040 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 1010 OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM AND ZINC OVERALL
THICKNESS0.080 INCHES MINIMUM AND 0.100 INCHES MAXIMUM


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