NSN 5306-00-025-3749

Part Details | MACHINE BOLT

5306-00-025-3749 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: B1821BH031F038D, 5306-00-025-3749, 00-025-3749, 5306000253749, 000253749

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53OCT 21, 197200-025-374901847 ( BOLT, MACHINE )
REFERENCE DRAWINGS & PICTURES

HEXAGON

HEXAGON FLATS

Cross Reference | NSN 5306-00-025-3749
Part Number Cage Code Manufacturer
B1821BH031F038D80204AMERICAN NATIONAL STANDARDSINSTITUTE, INCORPORATED
Technical Data | NSN 5306-00-025-3749
Characteristic Specifications
HEAD STYLE HEXAGON
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER0.312 INCHES
THREAD QUANTITY PER INCH24
THREAD CLASS2A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.240 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
HEAD HEIGHT0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM
HOLE CONFIGURATION STYLE HEXAGON FLATS
HOLE TYPE DRILLED
HOLE QUANTITY1
HOLE DIAMETER0.062 INCHES NOMINAL
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 10P STYLE
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT