NSN 5306-00-174-3871
Part Details | MACHINE BOLT
5306-00-174-3871 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: MILB857TYPE3GRADE2, 268420PC140, 5306-00-174-3871, 00-174-3871, 5306001743871, 001743871
Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
---|---|---|---|
53 | JAN 01, 1963 | 00-174-3871 | 01847 ( BOLT, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON

Cross Reference | NSN 5306-00-174-3871
Part Number | Cage Code | Manufacturer |
---|---|---|
MILB857TYPE3GRADE2 | 81349 | MILITARY SPECIFICATIONSPROMULGATED BY MILITARY |
268420PC140 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
Technical Data | NSN 5306-00-174-3871
Characteristic | Specifications |
---|---|
HEAD STYLE | HEXAGON |
THREAD SERIES DESIGNATOR | UNC |
NOMINAL THREAD DIAMETER | 0.438 INCHES |
THREAD QUANTITY PER INCH | 14 |
THREAD CLASS | 2A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 1.000 INCHES MAXIMUM |
FASTENER LENGTH | 1.000 INCHES NOMINAL |
MINIMUM TENSILE STRENGTH | 69000 POUNDS PER SQUARE INCH |
HEAD HEIGHT | 0.337 INCHES NOMINAL |
WIDTH BETWEEN FLATS | 0.612 INCHES MINIMUM AND 0.625 INCHES MAXIMUM |
FEATURES PROVIDED | FINISHED HEAD |
SPECIAL FEATURES | ONE HOLE DRILLED IN HEAD |
NONDEFINITIVE SPEC/STD DATA | 3 TYPE AND 2 GRADE |
DEPARTURE FROM CITED DESIGNATOR | AS MODIFIED BY HEAD H EIGHT AND DRILLED HOLE IN HEAD |