Part Details | CLOSE TOLERANCE SCREW
5305-01-270-8515 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: FT15598, FT1559-8, 360100303, 3601-0030-3, FT15598, FT1559-8, 5305-01-270-8515, 01-270-8515, 5305012708515, 012708515
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JAN 14, 1988 | 01-270-8515 | 29294 ( SCREW, CLOSE TOLERANCE ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON
CROSS RECESS TYPE II
Cross Reference | NSN 5305-01-270-8515
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| FT1559-8 | 29372 | ARCONIC GLOBAL FASTENERS & RINGS,INC. |
| 3601-0030-3 | 04577 | CARLETON TECHNOLOGIES INC |
| FT1559-8 | 58794 | FASTENER TECHNOLOGY CORP. |
Technical Data | NSN 5305-01-270-8515
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.286 INCHES MINIMUM AND 0.336 INCHES MAXIMUM |
| FASTENER LENGTH | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| HEAD HEIGHT | 0.104 INCHES MINIMUM AND 0.110 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE II |
| GRIP LENGTH | 0.084 INCHES MINIMUM AND 0.104 INCHES MAXIMUM |
| GRIP DIAMETER | 0.1625 INCHES MINIMUM AND 0.1635 INCHES MAXIMUM |
| SPECIAL FEATURES | CHAMFER DOG POINT AT THREADED END; TWO KEYWAYS ALONG THREADS 180 DEGRESS APART |