5310-01-292-7254 WASHER,FLAT Index 5310-01-292-7256 WASHER,FLAT

National Stock Number:
5310-01-292-7255

Federal Supply Class:
5310

National Item Identification Number:
012927255

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:
1160519B3010HUY6RIDEWELL CORPORATION
SW252305RQL2DRS ENVIRONMENTAL SYSTEMS INC
SW2523098255DRS SUSTAINMENT SYSTEMS INC


Techincal Specification:
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER2.090 INCHES MINIMUM AND 2.150 INCHES MAXIMUM
OVERALL DIAMETER4.470 INCHES MINIMUM AND 4.530 INCHES MAXIMUM
MATERIALSTEEL OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.1046 INCHES NOMINAL
CENTER HOLE SHAPE STYLEROUND


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