5310-00-641-9545 WASHER,FLAT Index 5310-00-641-9557 WASHER,FLAT

National Stock Number:
5310-00-641-9551

Federal Supply Class:
5310

National Item Identification Number:
006419551

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:
19450806848HONEYWELL INTERNATIONAL INC


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM
HOLE DIAMETER0.251 INCHES MINIMUM AND 0.255 INCHES MAXIMUM
OVERALL DIAMETER0.562 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5620 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 420F OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENTPASSIVATE OVERALL
THICKNESS0.050 INCHES MINIMUM AND 0.054 INCHES MAXIMUM


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