NSN 5305-00-143-1855
Part Details | CLOSE TOLERANCE SCREW
5305-00-143-1855 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: 106334716, 106334-7-16, 106334716, 106334-7-16, 20215522716, 202-15522-7-16, 5305-00-143-1855, 00-143-1855, 5305001431855, 001431855
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | OCT 11, 1968 | 00-143-1855 | 29294 ( SCREW, CLOSE TOLERANCE ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON COUNTERSUNK
OFFSET CRUCIFORM (TORQUE SET)
Cross Reference | NSN 5305-00-143-1855
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 106334-7-16 | 56878 | SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION |
| 106334-7-16 | 80539 | SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP |
| 202-15522-7-16 | 80378 | TRIUMPH AEROSTRUCTURES, LLCDBA TRIUMPH AEROSTRUCTURES - VOUGHT |
Technical Data | NSN 5305-00-143-1855
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.437 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.427 INCHES MINIMUM AND 0.494 INCHES MAXIMUM |
| FASTENER LENGTH | 1.437 INCHES MINIMUM AND 1.484 INCHES MAXIMUM |
| HEAD STYLE | 0 HEXAGON COUNTERSUNK |
| HEAD DIAMETER | 0.634 INCHES MINIMUM AND 0.668 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 99.5 DEGREES MINIMUM AND 100.5 DEGREES MAXIMUM |
| INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) |
| GRIP LENGTH | 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM |
| GRIP DIAMETER | 0.4360 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM |