5305-01-330-7571 SCREW,CAP,SOCKET HEAD Index 5305-01-330-7573 SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-01-330-7572

Federal Supply Class:
5305

National Item Identification Number:
013307572

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:
256-6603687-VHBM-9953711NAVAL SEA SYSTEMS COMMAND
5959304-8996169ELECTRIC BOAT CORPORATION
803-5959304-X-8953711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
THREAD SERIES DESIGNATORUNRC
NOMINAL THREAD DIAMETER0.375 INCHES
THREAD QUANTITY PER INCH16
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH1.125 INCHES NOMINAL
FASTENER LENGTH1.250 INCHES NOMINAL
MATERIALPLASTIC POLYAMIDE LOCKING FEATURE
STEEL FASTENER
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A574 Y 2 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
SURFACE TREATMENTALUMINUM AND
CHROMATE FASTENER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-83488 TY 2 CL 3 MIL SPEC SINGLE TREATMENT RESPONSE FASTENER
HARDNESS RATING39.0 ROCKWELL C MINIMUM AND
45.0 ROCKWELL C MAXIMUM FASTENER
MINIMUM TENSILE STRENGTH180000 POUNDS PER SQUARE INCH
HEAD STYLEFLAT CHAMFER
HEAD DIAMETER0.550 INCHES MINIMUM AND
0.562 INCHES MAXIMUM
HEAD HEIGHT0.368 INCHES MINIMUM AND
0.375 INCHES MAXIMUM
INTERNAL DRIVE STYLEHEXAGON
WIDTH ACROSS FLATS0.312 INCHES NOMINAL
LOCKING FEATUREPELLET OR
STRIP OR
PATCH THREADS


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