5330-01-420-8820 GASKET Index 5310-01-420-8822 WASHER,LOCK

National Stock Number:
5310-01-420-8821

Federal Supply Class:
5310

National Item Identification Number:
014208821

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:
1135E11FN7290099NORTHROP GRUMMAN SYSTEMS CORPORATION
386B010-02490099NORTHROP GRUMMAN SYSTEMS CORPORATION


Techincal Specification:
MATERIALSTEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6709, COND F MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER1.560 INCHES NOMINAL
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER2.380 INCHES NOMINAL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
THICKNESS0.188 INCHES NOMINAL
SURFACE FINISH125.0 MICROINCHES TOP


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