NSN 5305-01-309-1521

Part Details | SOCKET HEAD CAP SCREW

5305-01-309-1521 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: 2155W, 7032298086 PIECE 11, 703-2298086 PIECE 11, 15603, 15603, 5305-01-309-1521, 01-309-1521, 5305013091521, 013091521

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53OCT 11, 198901-309-152116282 ( SCREW, CAP, SOCKET HEAD )
REFERENCE DRAWINGS & PICTURES

CROWNED HEXAGON

HEXAGON

Cross Reference | NSN 5305-01-309-1521
Part Number Cage Code Manufacturer
2155W08303LAKE REGION DEVELOPMENT CO INCBRADFORD MACHINE TOOL DIV
703-2298086 PIECE 1180064NAVAL SHIP SYSTEMS COMMAND
1560327647WARN INDUSTRIES INC
1560327646WARN INDUSTRIES, INC.DBA WARN
Technical Data | NSN 5305-01-309-1521
Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS2A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH2.860 INCHES MINIMUM AND 3.000 INCHES MAXIMUM
FASTENER LENGTH3.000 INCHES NOMINAL
HEAD STYLE9 CROWNED HEXAGON
HEAD DIAMETER0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
HEAD HEIGHT0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
INTERNAL DRIVE STYLE HEXAGON
WIDTH ACROSS FLATS0.188 INCHES NOMINAL