5310-01-191-0447 WASHER,FLAT Index 5310-01-191-0449 WASHER,FLAT

National Stock Number:
5310-01-191-0448

Federal Supply Class:
5310

National Item Identification Number:
011910448

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:
236MR022P0191FH08LEHIGH ARMSTRONG INC
236MR022P0193B150RAYTHEON COMPANY
236MR022P01949956RAYTHEON COMPANY
236MR022P01954X10RAYTHEON COMPANY


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.219 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-766,CL 4,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 302 OVERALL
PERIPHERAL SHAPE STYLEROUND
PROPRIETARY CHARACTERISTICSPACS
OVERALL DIAMETER0.438 INCHES MINIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONVA296MR-105,DSCM 49956 MFR REF SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
THICKNESS0.047 INCHES MINIMUM AND 0.050 INCHES MAXIMUM


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