Part Details | CLOSE TOLERANCE SCREW
5305-01-026-0831 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.
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| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | AUG 15, 1976 | 01-026-0831 | 29294 ( SCREW, CLOSE TOLERANCE ) |
REFERENCE DRAWINGS & PICTURES
CROWNED HEXAGON
OFFSET CRUCIFORM (TORQUE SET)
ROUND
Cross Reference | NSN 5305-01-026-0831
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| NAS1121-25H | 08938 | AIR INDUSTRIES CO INC |
| NAS1121-25H | 50568 | APCOM INC |
| NAS1121-25H | 92215 | ARCONIC GLOBAL FASTENERS & RINGS,INC. |
| NAS1121-25H | 30902 | F AND C SALES INC |
| NAS1121-25H | 58998 | FASTENER INNOVATION TECHNOLOGY, INC.DBA F I T |
| NAS1121-25H | 73197 | HI-SHEAR CORPORATION |
| NAS1121-25H | 17446 | HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND |
| NAS1121-25H | 97928 | HUCK INTL INC |
| NAS1121-25H | 04348 | LAWRENCE ENGINEERING AND SUPPLY INC |
| NAS1121-25H | L4528 | LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC |
| NAS1121-25H | 80205 | NATIONAL AEROSPACE STANDARDSCOMMITTEE AEROSPACE INDUSTRIES |
| NAS1121-25H | 07851 | NOR-CAL SUPPLY CO.INC. |
| NAS1121-25H | 53606 | PLASTIC AND METAL PRODUCTSCORPORATION |
| NAS1121-25H | 30485 | QUALIFIED AIR COMPONENTS INC. |
| NAS1121-25H | 56878 | SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION |
| NAS1121-25H | 80539 | SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP |
Technical Data | NSN 5305-01-026-0831
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNJC |
| NOMINAL THREAD DIAMETER | 0.138 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.251 INCHES MINIMUM AND 0.301 INCHES MAXIMUM |
| FASTENER LENGTH | 1.823 INCHES MINIMUM AND 1.853 INCHES MAXIMUM |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| HEAD STYLE | 9 CROWNED HEXAGON |
| HEAD DIAMETER | 0.221 INCHES MINIMUM AND 0.226 INCHES MAXIMUM |
| HEAD HEIGHT | 0.074 INCHES MINIMUM AND 0.086 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) |
| HOLE CONFIGURATION STYLE | ROUND |
| HOLE TYPE | DRILLED |
| HOLE QUANTITY | 2 |
| HOLE DIAMETER | 0.038 INCHES NOMINAL |
| GRIP LENGTH | 1.552 INCHES MINIMUM AND 1.572 INCHES MAXIMUM |
| GRIP DIAMETER | 0.1365 INCHES MINIMUM AND 0.1375 INCHES MAXIMUM |
| SPECIFICATION/STANDARD DATA | 80205-NAS1121 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |