5306-00-139-6950
Find complete technical information, availability, and procurement data for: 5306-00-139-6950
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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, double hexagon w/hole head style, right-hand thread direction, 1.375 inches nominal fastener length, 0.750 inches minimum and 0.810 inches maximum 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
- 0.750 inches minimum and 0.810 inches maximum
- Fastener Length
- 1.375 inches nominal
- Head Style
- double hexagon w/hole
- Head Height
- 0.300 inches nominal
- Width Between Flats
- 0.312 inches nominal
- Extended Washer Diameter
- 0.438 inches nominal
- Extended Washer Thickness
- 0.060 inches minimum
- Hole Diameter
- 0.070 inches nominal
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 0.565 inches minimum and 0.625 inches maximum
- Hole Quantity
- 4
- Hole Type
- drilled
- Features Provided
- finished head
- Thread Quantity Per Inch
- 28
- Minimum Tensile Strength
- 130000 pounds per square inch
- Hardness Rating
- 248.0 brinell standard minimum and 341.0 brinell standard maximum overall
- Minimum Yield Strength
- 85000 pounds per square inch
- Hole Configuration Style
- double hexagon longitudinal hole
- Surface Finish
- 32.0 microinches bearing surface of head
- Surface Finish
- 32.0 microinches grip
- Surface Finish
- 32.0 microinches threads
- Material
- iron alloy 660 overall
- Material Document And Classification
- ams 5731 assn std single material response overall
- Thread Series Designator
- unjf
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5306-00-325-2673 | No Name Available | 06/22/1980 |
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 |
|---|---|
| MS9566-20 | Machine Bolt |
FAQs
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When the NSN 5306-00-139-6950 was assigned to the Federal Catalog?
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