1620-00-485-6991 PIN,RETRACTINGCYLI Index 2840-00-485-6998 CASE,TURBINE,AIRCRAFT GAS TURBIN

National Stock Number:
5310-00-485-6992

Federal Supply Class:
5310

National Item Identification Number:
004856992

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:
8657A6713002GOODRICH CORPORATION
8657A676K4C8GOODRICH CORPORATION


Techincal Specification:
CENTER HOLE SHAPE STYLEHEXAGON
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE WIDTH ACROSS FLATS0.505 INCHES MINIMUM AND 0.510 INCHES MAXIMUM
OVERALL DIAMETER1.000 INCHES NOMINAL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENTCADMIUM OVERALL
THICKNESS0.120 INCHES NOMINAL


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