NSN 5306-00-639-4250

Part Details | MACHINE BOLT

5306-00-639-4250 An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, BOLT, SHEAR. See also SCREW, CAP, HEXAGON HEAD and SCREW, MACHINE.

Alternate Parts: 245548, 245548, 245548, 245548, 5306-00-639-4250, 00-639-4250, 5306006394250, 006394250

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JAN 01, 196300-639-425001847 ( BOLT, MACHINE )
REFERENCE DRAWINGS & PICTURES

HEXAGON

HEXAGON FLATS

Cross Reference | NSN 5306-00-639-4250
Part Number Cage Code Manufacturer
24554892215ARCONIC GLOBAL FASTENERS & RINGS,INC.
24554880539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
24554806725SPS TECHNOLOGIES, LLCDBA AIR INDUSTRIES
24554877445UNITED TECHNOLOGIES CORPORATIONDBA PRATT WHITNEY-SPARE PARTS
Technical Data | NSN 5306-00-639-4250
Characteristic Specifications
HEAD STYLE HEXAGON
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
NONSTANDARD THREAD PITCH DIAMETER+0.2216 TO +0.2238 INCHES
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.357 INCHES MINIMUM AND 0.428 INCHES MAXIMUM
FASTENER LENGTH0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM
HEAD HEIGHT0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.431 INCHES MINIMUM AND 0.440 INCHES MAXIMUM
HOLE CONFIGURATION STYLE HEXAGON FLATS
HOLE TYPE DRILLED
HOLE QUANTITY1
HOLE DIAMETER0.065 INCHES NOMINAL
FEATURES PROVIDED FINISHED HEAD
PRECIOUS MATERIAL SILVER