Part Details | HEXAGON HEAD CAP SCREW
5305-01-303-5631 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: B18231B08020N, B18.2.3.1M, AES07M08B020CG8A81, 12485434092, 12485434-092, 12485434092, 12485434-092, DIN931M8X20, 5305-01-303-5631, 01-303-5631, 5305013035631, 013035631
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JUL 01, 1989 | 01-303-5631 | 18257 ( SCREW, CAP, HEXAGON HEAD ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON
Cross Reference | NSN 5305-01-303-5631
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| B18231B08020N | 80204 | AMERICAN NATIONAL STANDARDSINSTITUTE, INCORPORATED |
| B18.2.3.1M | 05047 | AMERICAN SOCIETY OF MECHANICALENGINEERS, THE |
| AES07M08B020CG8A81 | 05047 | AMERICAN SOCIETY OF MECHANICALENGINEERS, THE |
| 12485434-092 | 0FW39 | BAE SYSTEMS TACTICAL VEHICLE SYSTEMSLP |
| 12485434-092 | 19207 | U S ARMY TANK AUTOMOTIVE COMMANDAMSTA-IM-MM |
| DIN931M8X20 | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH |
Technical Data | NSN 5305-01-303-5631
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | M |
| THREAD LENGTH | 17.5 MILLIMETERS MINIMUM AND 20.0 MILLIMETERS MAXIMUM |
| FASTENER LENGTH | 20.0 MILLIMETERS NOMINAL |
| HEAD STYLE | HEXAGON |
| THREAD DIRECTION | RIGHT-HAND |
| NOMINAL THREAD DIAMETER | 8.0 MILLIMETERS |
| THREAD PITCH IN MILLIMETERS | 1.25 |
| EXTERNAL THREAD TOLERANCE CLASS | 6G |
| HEAD HEIGHT | 5.10 MILLIMETERS MINIMUM AND 5.50 MILLIMETERS MAXIMUM |
| WIDTH BETWEEN FLATS | 12.73 MILLIMETERS MINIMUM AND 13.00 MILLIMETERS MAXIMUM |
| END ITEM IDENTIFICATION | MRAP RG-31/ROUTE CLEARANCE VEHICLE |