5306-00-078-3422
Find complete technical information, availability, and procurement data for: 5306-00-078-3422
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An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. See also screw, cap, hexagon head and screw, machine.
3a thread class, 0.687 inches minimum thread length, 0.875 inches nominal fastener length, right-hand thread direction, double hexagon extended washer 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
- 0.687 inches minimum
- Fastener Length
- 0.875 inches nominal
- Head Style
- double hexagon extended washer
- Head Height
- 0.490 inches nominal
- Width Between Flats
- 0.678 inches minimum and 0.689 inches maximum
- Extended Washer Diameter
- 0.980 inches minimum and 0.990 inches maximum
- Extended Washer Thickness
- 0.188 inches nominal
- Nominal Thread Diameter
- 0.625 inches
- Grip Length
- 0.188 inches nominal
- Features Provided
- finished head
- Thread Quantity Per Inch
- 11
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 36.0 rockwell c minimum and 40.0 rockwell c maximum overall
- Part Name Assigned By Controlling Agency
- navy special project
- Material
- steel overall
- Surface Treatment
- cadmium and chromate overall
- Thread Series Designator
- unc
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 |
|---|---|
| A414778-1 | Machine Bolt |
FAQs
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