5310-01-144-3125 WASHER,FLAT Index 5310-01-144-3127 WASHER,SPRING TENSION

National Stock Number:
5310-01-144-3126

Federal Supply Class:
5310

National Item Identification Number:
011443126

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:
BACW10DH-C581205THE BOEING COMPANY


Techincal Specification:
BOTTOM RECESS ANGLE86.0 DEGREES MINIMUM AND 94.0 DEGREES MAXIMUM
BOTTOM RECESS DIAMETER0.401 INCHES MINIMUM AND 0.420 INCHES MAXIMUM
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
HOLE DIAMETER0.315 INCHES MINIMUM AND 0.324 INCHES MAXIMUM
OUTSIDE DIAMETER0.583 INCHES MINIMUM AND 0.603 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL THICKNESS0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM
MATERIALSTEEL COMP 4130 OVERALL
SPECIFICATION/STANDARD DATA81025-BACW10DH MANUFACTURERS STANDARD
STYLE DESIGNATORRECESSED BOTH SIDES
SURFACE FINISH63.0 MICROINCHES BOTTOM
SURFACE FINISH63.0 MICROINCHES TOP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
TOP RECESS ANGLE86.0 DEGREES MINIMUM AND 94.0 DEGREES MAXIMUM
TOP RECESS DIAMETER0.401 INCHES MINIMUM AND 0.420 INCHES MAXIMUM


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