NSN 5305-00-143-9781
Part Details | HEXAGON HEAD CAP SCREW
5305-00-143-9781 An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. Excludes BOLT,MACHINE; BOLT,EXTERNALLY RELIEVED BODY; BOLT,INTERNAL WRENCHING; and SCREW,CAP,SOCKET HEAD.
Alternate Parts: 4965179X187, 49651-79X1-87, MILS1222 TY1 GR 400, MIL-S-1222 TY1 GR 400, MILDTL1222J, MIL-DTL-1222J, 8032177917217, 803-2177917-2-17, 2663140OC87, 8032177917217, 803-2177917-2-17, 5305-00-143-9781, 00-143-9781, 5305001439781, 001439781
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JAN 10, 1973 | 00-143-9781 | 18257 ( SCREW, CAP, HEXAGON HEAD ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON
Cross Reference | NSN 5305-00-143-9781
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 49651-79X1-87 | 96169 | ELECTRIC BOAT CORPORATION |
| MIL-S-1222 TY1 GR 400 | 81349 | MILITARY SPECIFICATIONSPROMULGATED BY MILITARY |
| MIL-DTL-1222J | 81349 | MILITARY SPECIFICATIONSPROMULGATED BY MILITARY |
| 803-2177917-2-17 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
| 2663140OC87 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
| 803-2177917-2-17 | 30263 | PIMA VALVE, INC. |
Technical Data | NSN 5305-00-143-9781
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNC |
| THREAD LENGTH | 1.250 INCHES NOMINAL |
| FASTENER LENGTH | 2.500 INCHES NOMINAL |
| HEAD STYLE | HEXAGON |
| THREAD DIRECTION | RIGHT-HAND |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| THREAD QUANTITY PER INCH | 13 |
| THREAD CLASS | 2A |
| MINIMUM TENSILE STRENGTH | 80000 POUNDS PER SQUARE INCH |
| MINIMUM YIELD STRENGTH | 40000 POUNDS PER SQUARE INCH |
| HEAD HEIGHT | 0.302 INCHES MINIMUM AND 0.364 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.725 INCHES MINIMUM AND 0.750 INCHES MAXIMUM |