Part Details | MACHINE SCREW
5305-00-471-7990 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: F273799, F273799, 530599603, 5305-99-603, 5305-00-471-7990, 00-471-7990, 5305004717990, 004717990
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | MAY 08, 1970 | 00-471-7990 | 06657 ( SCREW, MACHINE ) |
REFERENCE DRAWINGS & PICTURES
DISHED HEXAGON
CROSS RECESS TYPE 1
Cross Reference | NSN 5305-00-471-7990
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| F273799 | U9143 | BAE SYSTEMS (OPERATIONS) LTD |
| F273799 | K0289 | BRITISH AEROSPACE MILITARYAIRCRAFT & AEROSTRUCTURES |
| 5305-99-603 | 99995 | NATO STOCK NUMBER ASSIGNEDBY ANOTHER NATION |
Technical Data | NSN 5305-00-471-7990
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.420 INCHES MINIMUM AND 0.430 INCHES MAXIMUM |
| FASTENER LENGTH | 0.790 INCHES MINIMUM AND 0.810 INCHES MAXIMUM |
| SCREW MATERIAL | STEEL |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | S948 FSCM K0289 MFR REF SINGLE MATERIAL RESPONSE |
| HEAD STYLE | 9 DISHED HEXAGON |
| HEAD DIAMETER | 0.810 INCHES MINIMUM AND 0.820 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| INTERNAL DRIVE STYLE | 0 CROSS RECESS TYPE 1 |
| SPECIAL FEATURES | HOLE DRILL THROUGHLG OF SCREW 0.328 IN. DIA |