5306-00-145-6781
Find complete technical information, availability, and procurement data for: 5306-00-145-6781
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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.
1.375 inches minimum thread length, 3a thread class, right-hand thread direction, hexagon head style, 7.875 inches nominal fastener 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
- 1.375 inches minimum
- Fastener Length
- 7.875 inches nominal
- Head Style
- hexagon
- Head Height
- 0.515 inches minimum and 0.547 inches maximum
- Width Between Flats
- 1.428 inches minimum and 1.441 inches maximum
- Shank Unthreaded Hole Diameter
- 0.141 inches minimum first hole
- Nominal Thread Diameter
- 1.000 inches
- Grip Length
- 6.500 inches nominal
- Features Provided
- finished head
- Thread Quantity Per Inch
- 14
- Minimum Tensile Strength
- 125000 pounds per square inch
- Hardness Rating
- 26.0 rockwell c minimum and 32.0 rockwell c maximum overall
- Distance From Head Largest Bearing Surface To Shank Hole Center
- 7.594 inches nominal first hole
- Material
- steel comp 4140 or steel comp 8740 or steel comp 8630 or steel comp 8735 or steel comp 4130 or steel comp 4037 overall
- Material Document And Classification
- mil-s-5626 mil spec 1st material response or mil-s-6049 mil spec 2nd material response or mil-s-6050 mil spec 3rd material response or mil-s-6098 mil spec 4th material response or mil-s-6758 mil spec 5th material response overall
- Surface Treatment
- cadmium and chromate overall
- Surface Treatment Document And Classification
- qq-p-416,ty 2,cl 3 fed spec all treatment responses overall
- Thread Series Designator
- uns
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5306-00-612-1496 | No Name Available | 01/01/1963 |
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 |
|---|---|
| AN16-75 | Machine Bolt |
FAQs
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Does NSN 5306-00-145-6781 require demilitarization?
Does NSN 5306-00-145-6781 contain precious materials?
Does NSN 5306-00-145-6781 contain hazardous materials?
When the NSN 5306-00-145-6781 was assigned to the Federal Catalog?
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