NSN 5306-01-320-1331

Part Details | MACHINE BOLT

5306-01-320-1331 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: ST213806, ST2138-06, 5306-01-320-1331, 01-320-1331, 5306013201331, 013201331

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53MAY 19, 199001-320-133101847 ( BOLT, MACHINE )
REFERENCE DRAWINGS & PICTURES

UNDERCUT HEXAGON

DOUBLE HEXAGON FLATS

Cross Reference | NSN 5306-01-320-1331
Part Number Cage Code Manufacturer
ST2138-0677445UNITED TECHNOLOGIES CORPORATIONDBA PRATT WHITNEY-SPARE PARTS
Technical Data | NSN 5306-01-320-1331
Characteristic Specifications
HEAD STYLE4 UNDERCUT HEXAGON
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.507 INCHES MINIMUM AND 0.598 INCHES MAXIMUM
FASTENER LENGTH0.688 INCHES NOMINAL
HEAD DIAMETER0.730 INCHES MINIMUM AND 0.737 INCHES MAXIMUM
HEAD HEIGHT0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.320 INCHES NOMINAL
HOLE CONFIGURATION STYLE3 DOUBLE HEXAGON FLATS
HOLE TYPE DRILLED
HOLE QUANTITY2
HOLE DIAMETER0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM
SPECIAL FEATURESCHAMFER 0.015/0.025 IN. X 45 DEG ON BOTTOM OF HEAD;HEAD HOLE CENTERS 0.260 IN. FROM CENTER OF HEAD,AND ARESPACED 180 DEGREES APART
END ITEM IDENTIFICATIONF100PW0229 ENGINE