NSN 5306-01-277-4979
Part Details | MACHINE BOLT
5306-01-277-4979 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: 1428UNFX1.25BOLT,STLZINCPLATED, 1/4-28UNFX1.25BOLT,STLZINCPLATED, MILS1222, MIL-S-1222, MILDTL1222, MIL-DTL-1222, M1222RN4F220GHLZX, MILF18240 .25028UNF2AX1.250LG, MILF18240 .250-28UNF-2AX1.250LG, 5306-01-277-4979, 01-277-4979, 5306012774979, 012774979
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | APR 22, 1988 | 01-277-4979 | 01847 ( BOLT, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON
Cross Reference | NSN 5306-01-277-4979
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 1/4-28UNFX1.25BOLT,STLZINCPLATED | 80204 | AMERICAN NATIONAL STANDARDSINSTITUTE, INCORPORATED |
| MIL-S-1222 | 81349 | MILITARY SPECIFICATIONSPROMULGATED BY MILITARY |
| MIL-DTL-1222 | 81349 | MILITARY SPECIFICATIONSPROMULGATED BY MILITARY |
| M1222RN4F220GHLZX | 81349 | MILITARY SPECIFICATIONSPROMULGATED BY MILITARY |
| MILF18240 .250-28UNF-2AX1.250LG | 81349 | MILITARY SPECIFICATIONSPROMULGATED BY MILITARY |
Technical Data | NSN 5306-01-277-4979
| Characteristic | Specifications |
|---|---|
| HEAD STYLE | HEXAGON |
| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.750 INCHES MINIMUM |
| FASTENER LENGTH | 1.210 INCHES MINIMUM AND 1.270 INCHES MAXIMUM |
| MINIMUM TENSILE STRENGTH | 150000 POUNDS PER SQUARE INCH |
| MINIMUM YIELD STRENGTH | 130000 POUNDS PER SQUARE INCH |
| HEAD HEIGHT | 0.150 INCHES MINIMUM AND 0.188 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.425 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| FEATURES PROVIDED | FINISHED HEAD |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 8 GRADE |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | HEX BOLT |