5306-00-042-6939
Find complete technical information, availability, and procurement data for: 5306-00-042-6939
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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.
square head style, 2a thread class, 4.500 inches nominal fastener length, right-hand thread direction, 1.250 inches minimum 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
- 2a
- Thread Direction
- right-hand
- Thread Length
- 1.250 inches minimum
- Fastener Length
- 4.500 inches nominal
- Head Style
- square
- Head Height
- 0.308 inches minimum and 0.348 inches maximum
- Width Between Flats
- 0.725 inches minimum and 0.750 inches maximum
- Nominal Thread Diameter
- 0.500 inches
- Grip Length
- 3.250 inches nominal
- Features Provided
- unfinished head
- Thread Quantity Per Inch
- 13
- Minimum Tensile Strength
- 55000 pounds per square inch
- Hardness Rating
- 95.0 rockwell b maximum overall
- Material
- steel overall
- Material Document And Classification
- ff-b-575,gr 1 fed spec single material response overall
- Surface Treatment
- cadmium or zinc overall
- Surface Treatment Document And Classification
- qq-p-416,ty 2,cl 3 fed spec 1st treatment response or qq-z-325,ty 2,cl 3 fed spec 2nd treatment response overall
- Thread Series Designator
- unc
- Nondefinitive Spec/Std Data
- 1 type and 1 grade
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5306-00-010-9229 | No Name Available | 08/01/2023 |
| 5306-00-207-1699 | No Name Available | 09/07/2022 |
| 5306-00-207-9712 | Machine Bolt | 07/01/2025 |
| 5306-00-263-7649 | Machine Bolt | 07/01/2025 |
| 5306-00-660-3059 | No Name Available | 09/01/2023 |
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 |
|---|---|
| 1-2X41-2 | Machine Bolt |
| 426939 | Machine Bolt |
| MS35355-132 | Machine Bolt |
FAQs
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Does NSN 5306-00-042-6939 require demilitarization?
Does NSN 5306-00-042-6939 contain precious materials?
Does NSN 5306-00-042-6939 contain hazardous materials?
When the NSN 5306-00-042-6939 was assigned to the Federal Catalog?
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