NSN 5305-01-306-6031

Part Details | SOCKET HEAD CAP SCREW

5305-01-306-6031 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: 6375256, 5305-01-306-6031, 01-306-6031, 5305013066031, 013066031

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53AUG 26, 198901-306-603116282 ( SCREW, CAP, SOCKET HEAD )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK

HEXAGON

Cross Reference | NSN 5305-01-306-6031
Part Number Cage Code Manufacturer
637525653711NAVAL SEA SYSTEMS COMMAND
Technical Data | NSN 5305-01-306-6031
Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS2A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH1.000 INCHES MINIMUM
FASTENER LENGTH3.438 INCHES MINIMUM AND 3.500 INCHES MAXIMUM
HEAD STYLE0 HEXAGON COUNTERSUNK
HEAD DIAMETER0.480 INCHES MINIMUM AND 0.531 INCHES MAXIMUM
COUNTERSINK ANGLE82.0 DEGREES NOMINAL
INTERNAL DRIVE STYLE HEXAGON
WIDTH ACROSS FLATS0.156 INCHES MINIMUM AND 0.158 INCHES MAXIMUM