NSN 5306-00-285-1257
Part Details | INTERNAL WRENCHING BOLT
5306-00-285-1257 An externally threaded fastener whose threaded portion is of one nominal diameter, No. 10 (0.190 IN.) (5 mm) or larger. It is designed with an internal socket or internal multiple spline for use with an internal driver. The head is beveled (conical) or cylindrical in shape. Items with cylindrical shaped heads must have an externally relieved body. A locking feature may be incorporated in the design of the head or threads. See also SCREW, CAP, SOCKET HEAD. Excludes SETSCREW; SCREW, SHOULDER; BOLT, SHOULDER; SCREW, EXTERNALLY RELIEVED BODY; BOLT, EXTERNALLY RELIEVED BODY; and SCREW, MACHINE.
Alternate Parts: 14423, 144-23, 5306-00-285-1257, 00-285-1257, 5306002851257, 002851257
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JAN 01, 1963 | 00-285-1257 | 06666 ( BOLT, INTERNAL WRENCHING ) |
REFERENCE DRAWINGS & PICTURES
UNDERCUT HEXAGON
HEXAGON
Cross Reference | NSN 5306-00-285-1257
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 144-23 | 80205 | NATIONAL AEROSPACE STANDARDSCOMMITTEE AEROSPACE INDUSTRIES |
Technical Data | NSN 5306-00-285-1257
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.500 INCHES NOMINAL |
| FASTENER LENGTH | 1.423 INCHES MINIMUM AND 1.453 INCHES MAXIMUM |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| HEAD STYLE | 8 UNDERCUT HEXAGON |
| HEAD DIAMETER | 0.430 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| HEAD HEIGHT | 0.226 INCHES NOMINAL |
| INTERNAL DRIVE STYLE | HEXAGON |
| WIDTH ACROSS FLATS | 0.219 INCHES MINIMUM AND 0.221 INCHES MAXIMUM |
