NSN 5306-01-421-1978
Part Details | MACHINE BOLT
5306-01-421-1978 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: NAS428476, NAS428-4-76, 5306-01-421-1978, 01-421-1978, 5306014211978, 014211978
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | NOV 03, 1995 | 01-421-1978 | 01847 ( BOLT, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
CROWNED HEXAGON
Cross Reference | NSN 5306-01-421-1978
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| NAS428-4-76 | 80205 | NATIONAL AEROSPACE STANDARDSCOMMITTEE AEROSPACE INDUSTRIES |
Technical Data | NSN 5306-01-421-1978
| Characteristic | Specifications |
|---|---|
| HEAD STYLE | CROWNED HEXAGON |
| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 7.804 INCHES MAXIMUM |
| FASTENER LENGTH | 7.875 INCHES MINIMUM AND 7.897 INCHES MAXIMUM |
| MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH |
| HEAD HEIGHT | 0.141 INCHES NOMINAL |
| WIDTH BETWEEN FLATS | 0.428 INCHES MINIMUM AND 0.442 INCHES MAXIMUM |
| SPECIFICATION/STANDARD DATA | 80205-NAS428 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |