5305-01-266-8538 SCREW,ASSEMBLED WASHER Index 5305-01-266-8540 SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-01-266-8539

Federal Supply Class:
5305

National Item Identification Number:
012668539

Description:
SCREW,CAP,SOCKET HEAD

Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE.


Manufacturer Information:
NAS7204P50F620CBS FASTENERS, LLC
NAS7204P51ER653-V FASTENER CO., INC.
NAS7204P580205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE


Techincal Specification:
MATERIALIRON ALLOY 660 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR
AMS 5737 ASSN STD 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
43.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH160000 POUNDS PER SQUARE INCH
SINGLE SHEAR STRENGTH95000 POUNDS PER SQUARE INCH
HEAD STYLEFLAT COUNTERSUNK
HEAD DIAMETER0.338 INCHES MINIMUM AND
0.381 INCHES MAXIMUM
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND
101.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
LOCKING FEATUREPATCH THREADS
SURFACE FINISH32.0 MICROINCHES BEARING SURFACE OF HEAD
32.0 MICROINCHES GRIP
32.0 MICROINCHES THREADS
SPECIFICATION/STANDARD DATA80205-NAS7204 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
THREAD SERIES DESIGNATORUNJF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.400 INCHES MINIMUM AND
0.450 INCHES MAXIMUM
FASTENER LENGTH0.722 INCHES MINIMUM AND
0.752 INCHES MAXIMUM


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