5340-01-528-5489 GLOW PLUG,AIRCRAFT, Index 1680-01-528-5491 SPACER,SLEEVE,AIRCR

National Stock Number:
5310-01-528-5490

Federal Supply Class:
5310

National Item Identification Number:
015285490

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:
140-001-1197499BELL TEXTRON INC


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.100 INCHES MINIMUM AND 0.110 INCHES MAXIMUM
OVERALL DIAMETER0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM
MATERIALALUMINUM ALLOY 2024 OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM


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