5306-01-311-3449
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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.
right-hand thread direction, hexagon head style, 6.031 inches minimum and 6.078 inches maximum fastener length, 3a thread class, 0.422 inches nominal thread length
Product Characteristics
Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.
- Thread Class
- 3a
- Thread Direction
- right-hand
- Thread Length
- 0.422 inches nominal
- Fastener Length
- 6.031 inches minimum and 6.078 inches maximum
- Head Style
- hexagon
- Head Height
- 0.250 inches minimum and 0.266 inches maximum
- Width Between Flats
- 0.740 inches minimum and 0.752 inches maximum
- Grip Diameter
- 0.4982 inches minimum and 0.4991 inches maximum
- Shank Unthreaded Hole Diameter
- 0.106 inches minimum and 0.116 inches maximum first hole
- Nominal Thread Diameter
- 0.500 inches
- Grip Length
- 5.625 inches nominal
- Thread Quantity Per Inch
- 20
- Minimum Tensile Strength
- 160000 pounds per square inch
- Criticality Code Justification
- feat
- Distance From Head Largest Bearing Surface To Shank Hole Center
- 5.859 inches minimum and 5.891 inches maximum first hole
- Surface Finish
- 32.0 microinches bearing surface of head
- Surface Finish
- 32.0 microinches grip
- Special Features
- safety critical item. apply one coat of mil-p-23377, ty 1, cl 1 or 3 and two top coats of mil-c-46168, color code 33538 per fed-std-595 to top of head
- Material
- steel comp e4340 or steel comp 4140 or steel comp 8740 or steel comp 8735 or steel comp 6150 overall
- Material Document And Classification
- mil-s-5000 mil spec 1st material response or mil-s-5626 mil spec 2nd material response or mil-s-6049 mil spec 3rd material response or mil-s-6098 mil spec 4th material response or mil-s-8503 mil spec 5th material response overall
- Surface Treatment
- cadmium and chromate overall
- Surface Treatment Document And Classification
- qq-p-416 ty 2 cl 2 fed spec all treatment responses overall
- Thread Series Designator
- unjf
Related Parts
This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:
| Part Number | Name |
|---|---|
| 02551 | Shear Bolt |
| 8936417-01 | Shear Bolt |
FAQs
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