CV21-409523-1
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A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. The unthreaded portion is of specific grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. A locking feature may be incorporated in the design of the head or threads. See bolt, machine and bolt, clevis.
right-hand thread direction, 0.717 inches minimum and 0.767 inches maximum thread length, double hexagon extended washer head style, 1.845 inches minimum and 1.875 inches maximum fastener length, 3a thread class
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
- 0.717 inches minimum and 0.767 inches maximum
- Fastener Length
- 1.845 inches minimum and 1.875 inches maximum
- Head Style
- double hexagon extended washer
- Head Height
- 0.290 inches minimum and 0.310 inches maximum
- Width Between Flats
- 0.306 inches minimum and 0.315 inches maximum
- Extended Washer Diameter
- 0.428 inches minimum and 0.438 inches maximum
- Extended Washer Thickness
- 0.059 inches minimum and 0.079 inches maximum
- Grip Diameter
- 0.2485 inches minimum and 0.2495 inches maximum
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 1.108 inches minimum and 1.128 inches maximum
- Thread Quantity Per Inch
- 28
- Minimum Tensile Strength
- 180000 pounds per square inch
- Hardness Rating
- 39.0 rockwell c minimum and 43.0 rockwell c maximum overall
- Material
- steel comp 430fse or steel comp 81b45 or steel comp 8735 or steel comp 302b or steel comp 4140 overall
- Surface Treatment
- cadmium overall
- Surface Treatment Document And Classification
- nas 672 assn std single treatment response overall
- Thread Series Designator
- unf
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 |
|---|---|
| CV21-409523-1 | Shear Bolt |
FAQs
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What is the FSCG of the NSN 5306-00-056-9787?
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Does NSN 5306-00-056-9787 require demilitarization?
Does NSN 5306-00-056-9787 contain precious materials?
Does NSN 5306-00-056-9787 contain hazardous materials?
When the NSN 5306-00-056-9787 was assigned to the Federal Catalog?
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