5310-01-121-8525 WASHER,RECESSED Index 5310-01-121-8527 WASHER,SHOULDERED

National Stock Number:
5310-01-121-8526

Federal Supply Class:
5310

National Item Identification Number:
011218526

Description:
WASHER,RECESSED

Detail:
A WASHER OF ANY PERIPHERAL SHAPE HAVING A CENTRALLY LOCATED HOLE. BOTH BEARING SURFACES ARE PARALLEL AND FLAT, BUT ONE OR BOTH OF THE BEARING SURFACES MUST BE BROKEN BY A COUNTERBORE, COUNTERSINK, OR SIMILARLY SHAPED RECESS. THE THICKNESS MUST NOT EXCEED 25 PER CENT OF THE OUTSIDE DIAMETER OR THE LARGEST OUTSIDE DIMENSION. THE MAXIMUM LIMIT OF THE TOLERANCE OR RANGE APPLIED TO THE THICKNESS AND/OR LARGEST OUTSIDE DIMENSION MUST BE USED TO DETERMINE COMPLIANCE. EXCLUDES WASHER, CONCAVE, RETAINER, PACKING, AND THRUST TYPE WASHERS. SEE ALSO SPACER, SLEEVE; AND SPACER, STEPPED.


Manufacturer Information:
10109387A486GNIMIKKEISTOKESKUS NCB FINLAND
5310PL21304249009HINSPEKTORAT WSPARCIA SIL ZBROJNYCH
MS21299C380205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE
MS21299C396906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
721009663500A1140LEONARDO SPA DIVISIONE SISTEMI DI DIFESA
MS21299-C3D9182ZF INDUSTRIEANTRIEBE WITTEN GMBH


Techincal Specification:
MATERIALSTEEL COMP 4130 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OR
MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTCADMIUM AND
CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING39.0 ROCKWELL C MINIMUM AND
45.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORRECESSED
HOLE DIAMETER0.191 INCHES MINIMUM AND
0.195 INCHES MAXIMUM
OUTSIDE DIAMETER0.377 INCHES MINIMUM AND
0.387 INCHES MAXIMUM
RECESS DIAMETER0.280 INCHES MINIMUM AND
0.290 INCHES MAXIMUM
MATERIAL THICKNESS0.067 INCHES MINIMUM AND
0.069 INCHES MAXIMUM
RECESS ANGLE90.0 DEGREES NOMINAL


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