Part Details | SOCKET HEAD CAP SCREW
5305-01-377-3253 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: MILF18240 TYN 1420UNC3A, MIL-F-18240 TYN 1/4-20UNC-3A, 536166221, 5361662-21, 5361662 ITEM 21, 5305-01-377-3253, 01-377-3253, 5305013773253, 013773253
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JUL 14, 1993 | 01-377-3253 | 16282 ( SCREW, CAP, SOCKET HEAD ) |
REFERENCE DRAWINGS & PICTURES
CROWNED HEXAGON
HEXAGON
Cross Reference | NSN 5305-01-377-3253
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| MIL-F-18240 TYN 1/4-20UNC-3A | 81349 | MILITARY SPECIFICATIONSPROMULGATED BY MILITARY |
| 5361662-21 | 53711 | NAVAL SEA SYSTEMS COMMAND |
| 5361662 ITEM 21 | 53711 | NAVAL SEA SYSTEMS COMMAND |
Technical Data | NSN 5305-01-377-3253
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.520 INCHES MINIMUM AND 0.620 INCHES MAXIMUM |
| FASTENER LENGTH | 0.620 INCHES NOMINAL |
| MINIMUM TENSILE STRENGTH | 80000 POUNDS PER SQUARE INCH |
| HEAD STYLE | 9 CROWNED HEXAGON |
| HEAD DIAMETER | 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| HEAD HEIGHT | 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | HEXAGON |
| WIDTH ACROSS FLATS | 0.250 INCHES MINIMUM AND 0.253 INCHES MAXIMUM |