NSN 5305-00-026-6543

Part Details | SOCKET HEAD CAP SCREW

5305-00-026-6543 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: FFS86TYPE1STYLE11, 734908PC15, 5305-00-026-6543, 00-026-6543, 5305000266543, 000266543

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JAN 01, 196300-026-654316282 ( SCREW, CAP, SOCKET HEAD )
REFERENCE DRAWINGS & PICTURES

CROWNED HEXAGON

HEXAGON

DOUBLE HEXAGON FLATS

Cross Reference | NSN 5305-00-026-6543
Part Number Cage Code Manufacturer
FFS86TYPE1STYLE1181348FEDERAL SPECIFICATIONSPROMULGATED BY GENERAL SERVICES
734908PC1510001NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT
Technical Data | NSN 5305-00-026-6543
Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER0.312 INCHES
THREAD QUANTITY PER INCH18
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH1.295 INCHES MINIMUM
FASTENER LENGTH1.359 INCHES MINIMUM AND 1.406 INCHES MAXIMUM
MINIMUM TENSILE STRENGTH160000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH130000 POUNDS PER SQUARE INCH
HEAD STYLE9 CROWNED HEXAGON
HEAD DIAMETER0.428 INCHES MINIMUM AND 0.429 INCHES MAXIMUM
HEAD HEIGHT0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM
INTERNAL DRIVE STYLE HEXAGON
WIDTH ACROSS FLATS0.219 INCHES NOMINAL
HOLE CONFIGURATION STYLE1 DOUBLE HEXAGON FLATS
HOLE TYPE DRILLED
HOLE QUANTITY4
HOLE DIAMETER0.047 INCHES NOMINAL
NONDEFINITIVE SPEC/STD DATA1 TYPE
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY HEAD HOLE CONFIGURATION AND THREAD LENGTH AND FASTENER LENGTH