5305-01-158-5552 SCREW,MACHINE Index 5305-01-158-5554 SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-01-158-5553

Federal Supply Class:
5305

National Item Identification Number:
011585553

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:
509441-810CA80020NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION CODE 4.8.8.0.0.B BLDG 148-2


Techincal Specification:
FASTENER LENGTH1.250 INCHES NOMINAL
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT0.500 INCHES NOMINAL
HOLE CONFIGURATION STYLEHEXAGON FLATS
HOLE DIAMETER0.061 INCHES MINIMUM AND 0.067 INCHES MAXIMUM
HOLE QUANTITY6
HOLE TYPEDRILLED
INTERNAL DRIVE STYLEHEXAGON
LOCKING FEATUREDISTORTIONS THREADS
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
NOMINAL THREAD DIAMETER0.500 INCHES
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
WIDTH ACROSS FLATS0.375 INCHES MINIMUM AND 0.378 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.750 INCHES NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS2416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM AND NICKEL OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH1.250 INCHES NOMINAL
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH20


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