5306-01-057-0321
Find complete technical information, availability, and procurement data for: 5306-01-057-0321
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A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. 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. The unthreaded portion is of specific 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. A locking feature may be incorporated in the design of the head or threads. See bolt, machine and bolt, clevis.
0.579 inches minimum and 0.640 inches maximum thread length, right-hand thread direction, 1.777 inches minimum and 1.818 inches maximum fastener length, 3a thread class, dished hexagon head style
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
- 0.579 inches minimum and 0.640 inches maximum
- Fastener Length
- 1.777 inches minimum and 1.818 inches maximum
- Head Style
- dished hexagon
- Head Height
- 0.247 inches minimum and 0.267 inches maximum
- Width Between Flats
- 0.676 inches minimum and 0.689 inches maximum
- Grip Diameter
- 0.4360 inches minimum and 0.4370 inches maximum
- Nominal Thread Diameter
- 0.438 inches
- Grip Length
- 1.178 inches minimum and 1.198 inches maximum
- Thread Quantity Per Inch
- 20
- Minimum Tensile Strength
- 220000 pounds per square inch
- Hardness Rating
- 46.0 rockwell c minimum and 50.0 rockwell c maximum overall
- Part Name Assigned By Controlling Agency
- navy special project
- Surface Treatment
- cadmium 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 |
|---|---|
| 66051-7-19 | Shear Bolt |
FAQs
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