5310-01-566-0990 NUT,PLAIN,HEXAGON Index 5310-01-566-1004 WASHER,FLAT

National Stock Number:
5310-01-566-0991

Federal Supply Class:
5310

National Item Identification Number:
015660991

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:
12423650076M6BAE SYSTEMS LAND & ARMAMENTS L.P.
124236500FW39BAE SYSTEMS TACTICAL VEHICLE SYSTEMS LP
1242365019207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
COLORBLACK OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER6.4 MILLIMETERS NOMINAL
OVERALL DIAMETER18.0 MILLIMETERS NOMINAL
MATERIALSTEEL OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER,PLAIN
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-DTL-13924. CLASS 4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTOXIDE OVERALL
THICKNESS1.6 MILLIMETERS NOMINAL


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