Part Details | INTERNAL WRENCHING BOLT
5306-00-637-8612 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: BL90711, BL90711, 7604339, 5306-00-637-8612, 00-637-8612, 5306006378612, 006378612
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JAN 01, 1963 | 00-637-8612 | 06666 ( BOLT, INTERNAL WRENCHING ) |
REFERENCE DRAWINGS & PICTURES
CROWNED HEXAGON
HEXAGON
Cross Reference | NSN 5306-00-637-8612
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| BL90711 | 64959 | AMERICAN TELEPHONE AND TELEGRAPH CO |
| BL90711 | 70408 | AT AND T CORP |
| 7604339 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 5306-00-637-8612
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.453 INCHES MINIMUM AND 0.485 INCHES MAXIMUM |
| FASTENER LENGTH | 3.734 INCHES MINIMUM AND 3.766 INCHES MAXIMUM |
| HEAD STYLE | 9 CROWNED HEXAGON |
| HEAD DIAMETER | 0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM |
| HEAD HEIGHT | 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | HEXAGON |
| WIDTH ACROSS FLATS | 0.184 INCHES MINIMUM AND 0.194 INCHES MAXIMUM |
| FIRST DIAMETER FROM HEAD | 0.167 INCHES MINIMUM AND 0.177 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 3.249 INCHES MINIMUM AND 3.313 INCHES MAXIMUM |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |