5310-00-177-1155 WASHER,FLAT Index 5315-00-177-1157 PIN,COTTER

National Stock Number:
5310-00-177-1156

Federal Supply Class:
5310

National Item Identification Number:
001771156

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:
5310PL09834779009HINSPEKTORAT WSPARCIA SIL ZBROJNYCH
81726202280AMERICAN HOIST AND DERRICK CO
81726249185TEREX AMERICAN CRANE CORP
AN961-416T80205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE
AN961-416T88044AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE
NASM961-416T80205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.225 INCHES MINIMUM AND 0.275 INCHES MAXIMUM
OVERALL DIAMETER0.495 INCHES MINIMUM AND 0.520 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-W-321 1/2 HARD FED SPEC 1ST MATERIAL RESPONSE OR QQ-B-626 1/2 HARD FED SPEC 2ND MATERIAL RESPONSE OVERALL
MATERIALCOPPER ALLOY 270 OR COPPER ALLOY 268 OVERALL
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-T-10727 TY 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTTIN OVERALL
THICKNESS0.054 INCHES MINIMUM AND 0.074 INCHES MAXIMUM


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