5306-00-281-5124
Find complete technical information, availability, and procurement data for: 5306-00-281-5124
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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, 1.250 inches minimum thread length, 1.875 inches nominal fastener length, right-hand thread direction, 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
- 1.250 inches minimum
- Fastener Length
- 1.875 inches nominal
- Head Style
- hexagon
- Head Height
- 0.312 inches nominal
- Width Between Flats
- 0.840 inches nominal
- Nominal Thread Diameter
- 0.500 inches
- Features Provided
- finished head
- Thread Quantity Per Inch
- 20
- Hardness Rating
- 27.6 rockwell c minimum and 34.3 rockwell c maximum overall
- Minimum Yield Strength
- 110000 pounds per square inch
- Material
- steel comp 8740 or steel comp 4140 or steel comp 8640 overall
- Material Document And Classification
- astm a331 assn std 1st material response or aastm a304 assn std 2nd material response or astm a331 assn std 3rd material response overall
- Thread Series Designator
- unf
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5306-00-298-2728 | No Name Available | 01/01/1960 |
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FAQs
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When the NSN 5306-00-281-5124 was assigned to the Federal Catalog?
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