Part Details | CLOSE TOLERANCE SCREW
5305-00-891-1721 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: HT811538, HT8115-3-8, HT19538, HT195-3-8, HT811538, HT8115-3-8, 3M26338, 3M263-3-8, 3M26338, 3M263-3-8, 3M26338, 3M263-3-8, HT19538, HT195-3-8, HS26233Z8, HS2623-3Z8, HS26233Z8, HS2623-3Z8, 3M26338, 3M263-3-8, HT19538, HT195-3-8, HT19538, HT195-3-8, 66117H38, 66117H3-8, 3M26338, 3M263-3-8, 5305-00-891-1721, 00-891-1721, 5305008911721, 008911721
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JAN 20, 1967 | 00-891-1721 | 29294 ( SCREW, CLOSE TOLERANCE ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON COUNTERSUNK
HIGH-TORQUE
Cross Reference | NSN 5305-00-891-1721
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| HT8115-3-8 | C4293 | ALCOA FASTENING SYSTEMSFAIRCHILDFASTENERS EUROPE - VSD GMBH |
| HT195-3-8 | C4293 | ALCOA FASTENING SYSTEMSFAIRCHILDFASTENERS EUROPE - VSD GMBH |
| HT8115-3-8 | 92215 | ARCONIC GLOBAL FASTENERS & RINGS,INC. |
| 3M263-3-8 | 56540 | ASSOCIATED AIRCRAFT MANUFACTURING &SALES, INC. |
| 3M263-3-8 | 76301 | BOEING COMPANY, THEDBA BOEING |
| 3M263-3-8 | 8X044 | DERCO AEROSPACE, INC. |
| HT195-3-8 | 73197 | HI-SHEAR CORPORATION |
| HS2623-3Z8 | 17446 | HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND |
| HS2623-3Z8 | 97928 | HUCK INTL INC |
| 3M263-3-8 | 34087 | KITCO, LLCDBA KITCO DEFENSE |
| HT195-3-8 | L4528 | LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC |
| HT195-3-8 | R1120 | SATAIR A/S |
| 66117H3-8 | 50392 | SPS TECHNOLOGIES INC |
| 3M263-3-8 | 56878 | SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION |
Technical Data | NSN 5305-00-891-1721
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.190 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.305 INCHES MINIMUM AND 0.372 INCHES MAXIMUM |
| FASTENER LENGTH | 0.815 INCHES MINIMUM AND 0.862 INCHES MAXIMUM |
| MINIMUM TENSILE STRENGTH | 220000 POUNDS PER SQUARE INCH |
| HEAD STYLE | 0 HEXAGON COUNTERSUNK |
| HEAD DIAMETER | 0.376 INCHES MINIMUM AND 0.385 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| INTERNAL DRIVE STYLE | HIGH-TORQUE |
| GRIP LENGTH | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
| GRIP DIAMETER | 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM |