NSN 5305-00-421-7846

Part Details | SOCKET HEAD CAP SCREW

5305-00-421-7846 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: 160A799PC2, 5305-00-421-7846, 00-421-7846, 5305004217846, 004217846

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53DEC 21, 197000-421-784616282 ( SCREW, CAP, SOCKET HEAD )
REFERENCE DRAWINGS & PICTURES

CROWNED HEXAGON

HEXAGON

DOUBLE HEXAGON FLATS

Cross Reference | NSN 5305-00-421-7846
Part Number Cage Code Manufacturer
160A799PC204808CURTISS-WRIGHT ELECTRO-MECHANICALCORPORATION
Technical Data | NSN 5305-00-421-7846
Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS2A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.259 INCHES MINIMUM AND 0.391 INCHES MAXIMUM
FASTENER LENGTH0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM
MINIMUM TENSILE STRENGTH160000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH130000 POUNDS PER SQUARE INCH
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 MINIMUM AND 0.190 INCHES MAXIMUM
HOLE CONFIGURATION STYLE1 DOUBLE HEXAGON FLATS
HOLE TYPE DRILLED
HOLE QUANTITY2
HOLE DIAMETER0.094 INCHES NOMINAL
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSCERTIFIED FREE FROM MERCURY CONTAMINATION
CRITICALITY CODE JUSTIFICATIONZZZY