5310-00-579-3820 WASHER,FLAT Index 5310-00-579-3827 NUT,PLAIN,HEXAGON

National Stock Number:
5310-00-579-3823

Federal Supply Class:
5310

National Item Identification Number:
005793823

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:
Q8H756-50WLU1GENERAL DYNAMICS CORP CONVAIR DIV LINDBERGH FIELD FACILITY
Q8H756-514170HUGHES MISSILE SYSTEMS CO SAN DIEGO
Q8H756-563910BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION I
Q8H756-57B709TRACOR FLIGHT SYSTEMS INC SUB OF TRACOR INC


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING10.0 ROCKWELL C MINIMUM AND 27.0 ROCKWELL C MAXIMUM
HOLE DIAMETER0.266 INCHES NOMINAL
OVERALL DIAMETER0.625 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-18729,COND N MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 4130 OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENTCADMIUM OVERALL
THICKNESS0.078 INCHES NOMINAL


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