4540-01-142-0324 HEATING ELEMENT,ELECTRICAL,NONIMMERSION TYPE Index 5310-01-142-0326 WASHER,LOCK

National Stock Number:
5310-01-142-0325

Federal Supply Class:
5310

National Item Identification Number:
011420325

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:
65651-06048-10678286SIKORSKY AIRCRAFT CORPORATION


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.443 INCHES MINIMUM AND 0.463 INCHES MAXIMUM
MATERIALALUMINUM ALLOY 6061 OVERALL
PERIPHERAL SHAPE STYLEDEE
PROPRIETARY CHARACTERISTICSPACS
SPECIAL FEATURESTEMPER T651 OR TEMPER T6511 OR TEMPER 6
THICKNESS0.060 INCHES NOMINAL


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