Part Details | CLOSE TOLERANCE SCREW
5305-00-598-7278 A SCREW, MACHINE or SCREW, CAP, SOCKET HEAD whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 IN.) (0.025 mm) or less of a specific diameter for items (1.000 IN.) (25 mm) or less in diameter. Items over (1.000 IN.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 IN.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 IN.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the Screw Thread Standards, FED STD H28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.
Alternate Parts: AS169925, AS169-9-25, MS3369B925, MS3369B925, 5305-00-598-7278, 00-598-7278, 5305005987278, 005987278
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JAN 16, 1975 | 00-598-7278 | 29294 ( SCREW, CLOSE TOLERANCE ) |
REFERENCE DRAWINGS & PICTURES
CROWNED HEXAGON
CROSS RECESS TYPE 1
Cross Reference | NSN 5305-00-598-7278
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| AS169-9-25 | 84256 | AVIBANK MFG., INC. |
| MS3369B925 | 96906 | MILITARY STANDARDSPROMULGATED BY MILITARY DEPARTMENTS |
| MS3369B925 | 80205 | NATIONAL AEROSPACE STANDARDSCOMMITTEE AEROSPACE INDUSTRIES |
Technical Data | NSN 5305-00-598-7278
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.562 INCHES |
| THREAD QUANTITY PER INCH | 18 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.506 INCHES MINIMUM AND 0.557 INCHES MAXIMUM |
| FASTENER LENGTH | 2.349 INCHES MINIMUM AND 2.369 INCHES MAXIMUM |
| HEAD STYLE | CROWNED HEXAGON |
| HEAD HEIGHT | 0.282 INCHES MINIMUM AND 0.297 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.865 INCHES MINIMUM AND 0.877 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | 4 CROSS RECESS TYPE 1 |
| GRIP LENGTH | 1.562 INCHES MINIMUM AND 1.578 INCHES MAXIMUM |
| GRIP DIAMETER | 0.5611 INCHES MINIMUM AND 0.5616 INCHES MAXIMUM |
| SPECIAL FEATURES | RETAINING ELEMENT IN SHANK |