5310-00-143-5682 WASHER,LOCK Index 5310-00-143-5684 WASHER,FLAT

National Stock Number:
5310-00-143-5683

Federal Supply Class:
5310

National Item Identification Number:
001435683

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:
113B4399P189954BAE SYSTEMS CONTROLS INC.


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING37.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM
HOLE DIAMETER0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM
OVERALL DIAMETER0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-766 COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 410 OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENTPASSIVATE OVERALL
THICKNESS0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM


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