NSN 5306-01-377-7278
Part Details | CLOSE TOLERANCE BOLT
5306-01-377-7278 An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (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 not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see BOLT, SHEAR. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see BOLT, MACHINE.
Alternate Parts: VS3190424, VS3190-4-24, VS3190424, VS3190-4-24, ST3M753424, ST3M753-4-24, MB156424, MB156-4-24, S343424, S343-4-24, S343424, S343-4-24, MB156424, MB156-4-24, 10116274, 11829424, 11829-4-24, 12897424, 12897-4-24, AIC763424, AIC763-4-24, PBF 1267, VFK600424, VFK600-4-24, 5306-01-377-7278, 01-377-7278, 5306013777278, 013777278
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | JUL 23, 1993 | 01-377-7278 | 27851 ( BOLT, CLOSE TOLERANCE ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON
Cross Reference | NSN 5306-01-377-7278
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| VS3190-4-24 | 92215 | ARCONIC GLOBAL FASTENERS & RINGS,INC. |
| VS3190-4-24 | 06950 | ARCONIC GLOBAL FASTENERS & RINGS,INC. |
| ST3M753-4-24 | 76301 | BOEING COMPANY, THEDBA BOEING |
| MB156-4-24 | 73197 | HI-SHEAR CORPORATION |
| S343-4-24 | 17446 | HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND |
| S343-4-24 | 97928 | HUCK INTL INC |
| MB156-4-24 | L4528 | LISI AEROSPACE CANADA CORPDIV HI SHEAR HOLDINGS INC |
| 10116274 | A486G | NIMIKKEISTOKESKUS NCB FINLAND |
| 11829-4-24 | 59563 | REID PRODUCTS INC.DBA REID PRODUCTS |
| 12897-4-24 | 80539 | SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP |
| AIC763-4-24 | 06725 | SPS TECHNOLOGIES, LLCDBA AIR INDUSTRIES |
| PBF 1267 | 27624 | SPS TECHNOLOGIES, LLCDBA PB FASTENERS |
| VFK600-4-24 | 06710 | VALLEY-TODECO, INC.DBA ARCONIC FASTENING SYSTEMS AND |
Technical Data | NSN 5306-01-377-7278
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.298 INCHES MINIMUM AND 0.399 INCHES MAXIMUM |
| FASTENER LENGTH | 1.982 INCHES NOMINAL |
| MINIMUM TENSILE STRENGTH | 220000 POUNDS PER SQUARE INCH |
| HEAD STYLE | 1 HEXAGON |
| HEAD HEIGHT | 0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM |
| EXTENDED WASHER DIAMETER | 0.470 INCHES MINIMUM AND 0.480 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.162 INCHES MINIMUM AND 0.182 INCHES MAXIMUM |
| HEAD MINOR DIAMETER | 0.297 INCHES MINIMUM AND 0.312 INCHES MAXIMUM |
| GRIP LENGTH | 1.500 INCHES NOMINAL |
| GRIP DIAMETER | 0.2480 INCHES MINIMUM AND 0.2485 INCHES MAXIMUM |
