5310-01-042-8871 WASHER,FLAT Index 5310-01-042-8873 WASHER,RECESSED

National Stock Number:
5310-01-042-8872

Federal Supply Class:
5310

National Item Identification Number:
010428872

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:
BACW10BP5C81205THE BOEING COMPANY


Techincal Specification:
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
HOLE DIAMETER0.313 INCHES MINIMUM AND 0.324 INCHES MAXIMUM
OUTSIDE DIAMETER0.585 INCHES MINIMUM AND 0.605 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-18729 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18728 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-18733 MIL SPEC 3RD MATERIAL RESPONSE OVERALL
MATERIAL THICKNESS0.057 INCHES MINIMUM AND 0.069 INCHES MAXIMUM
MATERIALSTEEL COMP 4130 OR STEEL COMP 8630 OR STEEL COMP 4135 OVERALL
RECESS ANGLE90.0 DEGREES MINIMUM AND 100.0 DEGREES MAXIMUM
RECESS DIAMETER0.394 INCHES MINIMUM AND 0.414 INCHES MAXIMUM
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSITEM IS FAA CERTIFIED
SPECIFICATION/STANDARD DATA81205-BACW10BP MANUFACTURERS STANDARD
STYLE DESIGNATORRECESSED
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTNICKEL AND CADMIUM OVERALL


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