NSN 5306-01-251-4991
Part Details | MACHINE BOLT
5306-01-251-4991 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: 9427997, MILB45912, MIL-B-45912, 9427997, 5306-01-251-4991, 01-251-4991, 5306012514991, 012514991
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | MAR 19, 1987 | 01-251-4991 | 01847 ( BOLT, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
DOUBLE HEXAGON EXTENDED WASHER
Cross Reference | NSN 5306-01-251-4991
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 9427997 | 24617 | GENERAL MOTORS CORP |
| MIL-B-45912 | 81349 | MILITARY SPECIFICATIONSPROMULGATED BY MILITARY |
| 9427997 | 72582 | MTU AMERICA INC. |
Technical Data | NSN 5306-01-251-4991
| Characteristic | Specifications |
|---|---|
| HEAD STYLE | 0 DOUBLE HEXAGON EXTENDED WASHER |
| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.625 INCHES |
| THREAD QUANTITY PER INCH | 18 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.500 INCHES NOMINAL |
| FASTENER LENGTH | 5.900 INCHES MINIMUM AND 6.000 INCHES MAXIMUM |
| MINIMUM TENSILE STRENGTH | 150000 POUNDS PER SQUARE INCH |
| HEAD HEIGHT | 0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.860 INCHES MINIMUM AND 0.875 INCHES MAXIMUM |
| FEATURES PROVIDED | FINISHED HEAD |
| SPECIFICATION/STANDARD DATA | 81349-MIL-B-45912 GOVERNMENT SPECIFICATION AND 24617-9427997 MANUFACTURERS STANDARD |
| NONDEFINITIVE SPEC/STD DATA | B COMPOSITION |
| DEPARTURE FROM CITED DESIGNATOR | AS MODIFIED BY PLAIN FIN. |
| SUPPLEMENTARY FEATURES | MFR TYPE AA HEX. LOCK BOLT; U/O DETROIT DIESEL 149 ENGINE MARINE GEAR |