NSN 5306-00-031-6388

Part Details | MACHINE BOLT

5306-00-031-6388 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: 221394, 221394, 5306-00-031-6388, 00-031-6388, 5306000316388, 000316388

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53APR 06, 196700-031-638801847 ( BOLT, MACHINE )
REFERENCE DRAWINGS & PICTURES

UNDERCUT HEXAGON

Cross Reference | NSN 5306-00-031-6388
Part Number Cage Code Manufacturer
22139480539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
22139477445UNITED TECHNOLOGIES CORPORATIONDBA PRATT WHITNEY-SPARE PARTS
Technical Data | NSN 5306-00-031-6388
Characteristic Specifications
HEAD STYLE5 UNDERCUT HEXAGON
THREAD SERIES DESIGNATOR UNS
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
NONSTANDARD THREAD PITCH DIAMETER+0.2213 TO +0.2238 INCHES
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.579 INCHES MINIMUM AND 0.599 INCHES MAXIMUM
FASTENER LENGTH0.650 INCHES MINIMUM AND 0.670 INCHES MAXIMUM
HEAD DIAMETER0.510 INCHES MINIMUM AND 0.530 INCHES MAXIMUM
HEAD HEIGHT0.140 INCHES MINIMUM AND 0.160 INCHES MAXIMUM
DISTANCE FROM CENTERLINE TO FLAT0.140 INCHES MINIMUM AND 0.150 INCHES MAXIMUM
FEATURES PROVIDED UNFINISHED HEAD