5305-01-237-1025 SCREW,CAP,SOCKETHEAD Index 5305-01-237-1027 SETSCREW

National Stock Number:
5305-01-237-1026

Federal Supply Class:
5305

National Item Identification Number:
012371026

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:
103-4645417 ITEM 4-680064NAVAL SHIP SYSTEMS COMMAND
60-16-580396169ELECTRIC BOAT CORPORATION


Techincal Specification:
THREAD SERIES DESIGNATORUNC
NOMINAL THREAD DIAMETER0.625 INCHES
THREAD QUANTITY PER INCH11
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.818 INCHES MINIMUM AND
1.000 INCHES MAXIMUM
FASTENER LENGTH1.000 INCHES NOMINAL
MATERIALSTEEL OVERALL
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND
45.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH170000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH150000 POUNDS PER SQUARE INCH
HEAD STYLEFLAT CHAMFER
HEAD DIAMETER0.921 INCHES MINIMUM AND
0.938 INCHES MAXIMUM
HEAD HEIGHT0.616 INCHES MINIMUM AND
0.625 INCHES MAXIMUM
INTERNAL DRIVE STYLEHEXAGON
WIDTH ACROSS FLATS0.500 INCHES NOMINAL
LOCKING FEATUREPATCH OR
PELLET OR
STRIP THREADS
SPECIAL FEATURESCONTACT SURFACES AND MALE THREADS COATED WITH MOLYBDENUM DISULFIDE IN ISOPROPANOL PER MIL-L-24478,P/N 52-11-1305


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