MS21297-14056
View detailed technical data, stock status, and sourcing information for: MS21297-14056
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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, 4.848 inches minimum and 4.878 inches maximum fastener length, 1.338 inches minimum and 1.388 inches maximum thread length, spline extended washer head style, 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
- 1.338 inches minimum and 1.388 inches maximum
- Fastener Length
- 4.848 inches minimum and 4.878 inches maximum
- Head Style
- spline extended washer
- Head Height
- 0.690 inches minimum and 0.710 inches maximum
- Extended Washer Diameter
- 1.615 inches minimum and 1.625 inches maximum
- Extended Washer Thickness
- 0.116 inches minimum and 0.136 inches maximum
- Grip Diameter
- 0.8730 inches minimum and 0.8740 inches maximum
- Nominal Thread Diameter
- 0.875 inches
- Grip Length
- 3.490 inches minimum and 3.510 inches maximum
- Thread Quantity Per Inch
- 14
- Surface Finish
- 32.0 microinches bearing surface of head
- Surface Finish
- 32.0 microinches grip
- Material
- steel comp h11 overall
- Surface Treatment
- cadmium overall
- Thread Series Designator
- unjf
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 |
|---|---|
| MS21297-14056 | Close Tolerance Bolt |
FAQs
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What is the FSCG of the NSN 5306-01-059-1948?
Does the NSN 5306-01-059-1948 have a Schedule B code assigned?
Does NSN 5306-01-059-1948 require demilitarization?
Does NSN 5306-01-059-1948 contain precious materials?
Does NSN 5306-01-059-1948 contain hazardous materials?
When the NSN 5306-01-059-1948 was assigned to the Federal Catalog?
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Pricing
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In Stock
This item is currently available and ready for prompt shipment. Units may be offered in various conditions — new, surplus, or refurbished — and stored at verified global facilities. Request a quote to confirm current stock and delivery time.
| New Surplus | 247 |
| New Material | 461 |
| Total | 708 |