Part Details | HEXAGON HEAD CAP SCREW
5305-00-638-1212 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: 2337991508, 2337991-508, 2337991508, 2337991-508, 5305-00-638-1212, 00-638-1212, 5305006381212, 006381212
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JAN 01, 1963 | 00-638-1212 | 18257 ( SCREW, CAP, HEXAGON HEAD ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON
Cross Reference | NSN 5305-00-638-1212
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 2337991-508 | 88277 | BOEING COMPANY, THEDBA BOEING |
| 2337991-508 | 18355 | BOEING COMPANY, THEDBA BOEING |
Technical Data | NSN 5305-00-638-1212
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNF |
| THREAD LENGTH | 1.000 INCHES MINIMUM AND 1.188 INCHES MAXIMUM |
| FASTENER LENGTH | 2.594 INCHES MINIMUM AND 2.688 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| THREAD DIRECTION | RIGHT-HAND |
| NOMINAL THREAD DIAMETER | 0.375 INCHES |
| THREAD QUANTITY PER INCH | 24 |
| THREAD CLASS | 3A |
| HEAD HEIGHT | 0.219 INCHES NOMINAL |
| WIDTH BETWEEN FLATS | 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |
| DEPARTURE FROM CITED DESIGNATOR | AS MODIFIED BY HEAD HEIGHT AND FASTENER LENGTH |
| NONDEFINITIVE SPEC/STD DATA | 2 TYPE AND 10P STYLE |