Part Details | SOCKET HEAD CAP SCREW
5305-01-321-9731 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: 1213UNC3A 2 34 IN. LG, 1/2-13UNC-3A 2 3/4 IN. LG, FFS86, FF-S-86, 5305-01-321-9731, 01-321-9731, 5305013219731, 013219731
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JUN 27, 1990 | 01-321-9731 | 16282 ( SCREW, CAP, SOCKET HEAD ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON COUNTERSUNK
HEXAGON
Cross Reference | NSN 5305-01-321-9731
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 1/2-13UNC-3A 2 3/4 IN. LG | 80204 | AMERICAN NATIONAL STANDARDSINSTITUTE, INCORPORATED |
| FF-S-86 | 81348 | FEDERAL SPECIFICATIONSPROMULGATED BY GENERAL SERVICES |
Technical Data | NSN 5305-01-321-9731
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| THREAD QUANTITY PER INCH | 13 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.500 INCHES MINIMUM AND 2.380 INCHES MAXIMUM |
| FASTENER LENGTH | 2.750 INCHES NOMINAL |
| HEAD STYLE | 0 HEXAGON COUNTERSUNK |
| HEAD DIAMETER | 0.872 INCHES MINIMUM AND 0.938 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 80.0 DEGREES MINIMUM AND 84.0 DEGREES MAXIMUM |
| INTERNAL DRIVE STYLE | HEXAGON |
| WIDTH ACROSS FLATS | 0.312 INCHES NOMINAL |
| NONDEFINITIVE SPEC/STD DATA | 4 TYPE |