Part Details | CLOSE TOLERANCE BOLT
5306-00-300-2680 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: MS27576544, MS27576-5-44, MS27576544, MS27576-5-44, 5306-00-300-2680, 00-300-2680, 5306003002680, 003002680
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | SEP 28, 1973 | 00-300-2680 | 27851 ( BOLT, CLOSE TOLERANCE ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON COUNTERSUNK UNDERCUT
Cross Reference | NSN 5306-00-300-2680
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| MS27576-5-44 | 96906 | MILITARY STANDARDSPROMULGATED BY MILITARY DEPARTMENTS |
| MS27576-5-44 | 80205 | NATIONAL AEROSPACE STANDARDSCOMMITTEE AEROSPACE INDUSTRIES |
Technical Data | NSN 5306-00-300-2680
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.312 INCHES |
| THREAD QUANTITY PER INCH | 24 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.472 INCHES MINIMUM AND 0.488 INCHES MAXIMUM |
| FASTENER LENGTH | 3.238 INCHES NOMINAL |
| HEAD STYLE | HEXAGON COUNTERSUNK UNDERCUT |
| BOTTOM COUNTERSINK DIAMETER | 0.310 INCHES MINIMUM AND 0.311 INCHES MAXIMUM |
| HEAD HEIGHT | 0.157 INCHES MINIMUM AND 0.172 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 0.005 RADIANS MINIMUM AND 0.015 RADIANS MAXIMUM |
| GRIP LENGTH | 2.750 INCHES MINIMUM AND 2.766 INCHES MAXIMUM |
