NSN 5306-00-638-8271

Part Details | MACHINE BOLT

5306-00-638-8271 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: 220781, 5306-00-638-8271, 00-638-8271, 5306006388271, 006388271

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JAN 01, 196300-638-827101847 ( BOLT, MACHINE )
REFERENCE DRAWINGS & PICTURES

HEXAGON

HEXAGON FLATS

Cross Reference | NSN 5306-00-638-8271
Part Number Cage Code Manufacturer
22078177445UNITED TECHNOLOGIES CORPORATIONDBA PRATT WHITNEY-SPARE PARTS
Technical Data | NSN 5306-00-638-8271
Characteristic Specifications
HEAD STYLE HEXAGON
THREAD SERIES DESIGNATOR UNS
NOMINAL THREAD DIAMETER0.312 INCHES
THREAD QUANTITY PER INCH24
NONSTANDARD THREAD PITCH DIAMETER+0.2797 TO +0.2824 INCHES
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.752 INCHES MINIMUM AND 0.812 INCHES MAXIMUM
FASTENER LENGTH1.678 INCHES MINIMUM AND 1.698 INCHES MAXIMUM
HEAD HEIGHT0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM
HOLE CONFIGURATION STYLE HEXAGON FLATS
HOLE TYPE DRILLED
HOLE QUANTITY1
HOLE DIAMETER0.070 INCHES NOMINAL
GRIP LENGTH0.886 INCHES MINIMUM AND 0.926 INCHES MAXIMUM
FEATURES PROVIDED FINISHED HEAD