NSN 5305-01-178-3688

Part Details | SOCKET HEAD CAP SCREW

5305-01-178-3688 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: FFS86, FF-S-86, 246243840, 2462438-40, 5305-01-178-3688, 01-178-3688, 5305011783688, 011783688

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53MAY 04, 198401-178-368816282 ( SCREW, CAP, SOCKET HEAD )
REFERENCE DRAWINGS & PICTURES

CROWNED HEXAGON

HEXAGON

Cross Reference | NSN 5305-01-178-3688
Part Number Cage Code Manufacturer
FF-S-8681348FEDERAL SPECIFICATIONSPROMULGATED BY GENERAL SERVICES
2462438-4010001NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT
Technical Data | NSN 5305-01-178-3688
Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER0.164 INCHES
THREAD QUANTITY PER INCH32
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH1.938 INCHES MINIMUM AND 2.000 INCHES MAXIMUM
FASTENER LENGTH2.000 INCHES NOMINAL
MINIMUM TENSILE STRENGTH80000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH30000 POUNDS PER SQUARE INCH
HEAD STYLE9 CROWNED HEXAGON
HEAD DIAMETER0.270 INCHES NOMINAL
HEAD HEIGHT0.159 INCHES MINIMUM AND 0.164 INCHES MAXIMUM
INTERNAL DRIVE STYLE HEXAGON
WIDTH ACROSS FLATS0.141 INCHES NOMINAL
NONDEFINITIVE SPEC/STD DATA6 TYPE