5998-00-435-5321 PRINTED WIRING BOARD Index 5310-00-435-5325 WASHER,FLAT

National Stock Number:
5310-00-435-5322

Federal Supply Class:
5310

National Item Identification Number:
004355322

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:
MS9549-060U583SAE INTERNATIONAL
MS9549-0681343SOCIETY OF AUTOMOTIVE ENGINEERS INC
MS9549-0696906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
MS9549-06U0J60ONTIC ENGINEERING & MANUFACTURING UK LIMITED


Techincal Specification:
MATERIALSTEEL COMP 321 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.145 INCHES MINIMUM AND
0.160 INCHES MAXIMUM
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER0.302 INCHES MINIMUM AND
0.322 INCHES MAXIMUM
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
THICKNESS0.014 INCHES MINIMUM AND
0.018 INCHES MAXIMUM
SURFACE FINISH63.0 MICROINCHES TOP
63.0 MICROINCHES BOTTOM


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