NSN 5306-00-025-3789
Part Details | CLOSE TOLERANCE BOLT
5306-00-025-3789 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: NAS1225C4, LK1225C4, 5306-00-025-3789, 00-025-3789, 5306000253789, 000253789
Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
---|---|---|---|
53 | OCT 21, 1972 | 00-025-3789 | 27851 ( BOLT, CLOSE TOLERANCE ) |
REFERENCE DRAWINGS & PICTURES
DISHED HEXAGON
Cross Reference | NSN 5306-00-025-3789
Part Number | Cage Code | Manufacturer |
---|---|---|
NAS1225C4 | 80205 | NATIONAL AEROSPACE STANDARDSCOMMITTEE AEROSPACE INDUSTRIES |
LK1225C4 | 26304 | TORKON FASTENER CORP |
Technical Data | NSN 5306-00-025-3789
Characteristic | Specifications |
---|---|
THREAD SERIES DESIGNATOR | UNJF |
NOMINAL THREAD DIAMETER | 0.313 INCHES |
THREAD QUANTITY PER INCH | 24 |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM |
FASTENER LENGTH | 0.704 INCHES MINIMUM AND 0.734 INCHES MAXIMUM |
MINIMUM TENSILE STRENGTH | 140000 POUNDS PER SQUARE INCH |
HEAD STYLE | DISHED HEXAGON |
HEAD HEIGHT | 0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM |
WIDTH BETWEEN FLATS | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM |
GRIP LENGTH | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM |
GRIP DIAMETER | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM |
SPECIAL FEATURES | WITH STRIP OR PATCH OR BUTTON TYPE ELEMENT ON THREADS FOR LOCKING FEATURE |
SPECIFICATION/STANDARD DATA | 80205-NAS1225 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |