Part Details | MACHINE SCREW
5305-00-520-7681 An externally threaded fastener whose threaded portion is of one nominal diameter, No 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below No. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, CLEVIS; BOLT, EXTERNALLY RELIEVED BODY; SCREW, EXTERNALLY RELIEVED BODY; and SCREW, ASSEMBLED WASHER. See also, SCREW, INSTRUMENT; BOLT, MACHINE; BOLT, INTERNAL WRENCHING; and SCREW, CAP SOCKET HEAD.
Alternate Parts: 5207681, 5305-00-520-7681, 00-520-7681, 5305005207681, 005207681
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JAN 01, 1963 | 00-520-7681 | 06657 ( SCREW, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
CROWNED HEXAGON
CROSS RECESS TYPE 1
Cross Reference | NSN 5305-00-520-7681
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 5207681 | 19206 | ARMY, UNITED STATES DEPARTMENT OFTHE |
Technical Data | NSN 5305-00-520-7681
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.438 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.218 INCHES MINIMUM |
| FASTENER LENGTH | 0.510 INCHES MINIMUM AND 0.520 INCHES MAXIMUM |
| HEAD STYLE | 0 CROWNED HEXAGON |
| HEAD DIAMETER | 0.595 INCHES MINIMUM AND 0.605 INCHES MAXIMUM |
| HEAD HEIGHT | 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 80.0 DEGREES NOMINAL |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| SPECIAL FEATURES | 0.062 IN. LG THD RELIEF UNDER HEAD,0.367 IN. MIN AND 0.369 IN. MAX DIA BY 0.240 IN. LG PILOT LOCATED BELOW THDED PORTION |