5310-01-167-0256 WASHER,FLAT Index 5310-01-167-0258 WASHER,RECESSED

National Stock Number:
5310-01-167-0257

Federal Supply Class:
5310

National Item Identification Number:
011670257

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:
LD153-0027-101243999THE BOEING COMPANY


Techincal Specification:
CRITICALITY CODE JUSTIFICATIONFEAT
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
HOLE DIAMETER0.752 INCHES MINIMUM AND 0.756 INCHES MAXIMUM
OUTSIDE DIAMETER1.230 INCHES MINIMUM AND 1.250 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL THICKNESS0.054 INCHES MINIMUM AND 0.070 INCHES MAXIMUM
MATERIALSTEEL COMP XM-13 OVERALL
RECESS ANGLE90.0 DEGREES NOMINAL
RECESS DIAMETER0.918 INCHES MINIMUM AND 0.928 INCHES MAXIMUM
SPECIAL FEATURESDEEP LOOK PROJECT--LANDING GEAR
STYLE DESIGNATORRECESSED
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL


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