7530-01-017-6157 PAPER,TABULATING MACHINE,CONTINU Index 5310-01-017-6159 WASHER,FLAT

National Stock Number:
5310-01-017-6158

Federal Supply Class:
5310

National Item Identification Number:
010176158

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:
10121972A486GNIMIKKEISTOKESKUS NCB FINLAND
5310PL07196749009HINSPEKTORAT WSPARCIA SIL ZBROJNYCH
MS21206-C396906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
HOLE DIAMETER0.191 INCHES MINIMUM AND 0.195 INCHES MAXIMUM
OUTSIDE DIAMETER0.362 INCHES MINIMUM AND 0.372 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL THICKNESS0.057 INCHES MINIMUM AND 0.069 INCHES MAXIMUM
MATERIALSTEEL COMP 4130 OVERALL
RECESS ANGLE90.0 DEGREES NOMINAL
RECESS DIAMETER0.280 INCHES MINIMUM AND 0.290 INCHES MAXIMUM
STYLE DESIGNATORRECESSED
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL


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