NSN 5305-00-489-0388

Part Details | SOCKET HEAD CAP SCREW

5305-00-489-0388 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.

Alternate Parts: 9157796161, 9157796-161, 5305-00-489-0388, 00-489-0388, 5305004890388, 004890388

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JUN 03, 197000-489-038816282 ( SCREW, CAP, SOCKET HEAD )
REFERENCE DRAWINGS & PICTURES

CROWNED HEXAGON

HEXAGON

Cross Reference | NSN 5305-00-489-0388
Part Number Cage Code Manufacturer
9157796-16118876U S ARMY AVIATION AND MISSILECOMMAND
Technical Data | NSN 5305-00-489-0388
Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER0.312 INCHES
THREAD QUANTITY PER INCH18
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.625 INCHES MINIMUM
FASTENER LENGTH0.625 INCHES NOMINAL
MINIMUM TENSILE STRENGTH90000 POUNDS PER SQUARE INCH
HEAD STYLE9 CROWNED HEXAGON
HEAD DIAMETER0.457 INCHES MINIMUM AND 0.468 INCHES MAXIMUM
HEAD HEIGHT0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM
INTERNAL DRIVE STYLE HEXAGON
WIDTH ACROSS FLATS0.250 INCHES NOMINAL
CRITICALITY CODE JUSTIFICATIONCQBC