Part Details | SOCKET HEAD CAP SCREW
5305-01-388-5321 An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE.
Alternate Parts: 8016641191FNB18, 801-6641191FNB18, 5305-01-388-5321, 01-388-5321, 5305013885321, 013885321
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | APR 01, 1994 | 01-388-5321 | 16282 ( SCREW, CAP, SOCKET HEAD ) |
REFERENCE DRAWINGS & PICTURES
CROWNED HEXAGON
HEXAGON
Cross Reference | NSN 5305-01-388-5321
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 801-6641191FNB18 | 53711 | NAVAL SEA SYSTEMS COMMAND |
Technical Data | NSN 5305-01-388-5321
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.625 INCHES |
| THREAD QUANTITY PER INCH | 11 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 2.250 INCHES NOMINAL |
| FASTENER LENGTH | 3.000 INCHES NOMINAL |
| HEAD STYLE | 9 CROWNED HEXAGON |
| HEAD DIAMETER | 0.921 INCHES MINIMUM AND 0.938 INCHES MAXIMUM |
| HEAD HEIGHT | 0.616 INCHES MINIMUM AND 0.625 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | HEXAGON |
| WIDTH ACROSS FLATS | 0.500 INCHES NOMINAL |
| SPECIAL FEATURES | THREADS, SHANK AND BEARING SURFACE OF HEAD COATED WITH MIL-L-24478, FN42 OR NAVSEA APPROVED EQUIVALENT |