MS21297-12037
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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, 3a thread class, 3.485 inches minimum and 3.515 inches maximum fastener length, 1.163 inches minimum and 1.213 inches maximum thread length, spline extended washer 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
- 1.163 inches minimum and 1.213 inches maximum
- Fastener Length
- 3.485 inches minimum and 3.515 inches maximum
- Head Style
- spline extended washer
- Head Height
- 0.472 inches minimum and 0.512 inches maximum
- Extended Washer Diameter
- 1.384 inches minimum and 1.394 inches maximum
- Extended Washer Thickness
- 0.098 inches minimum and 0.118 inches maximum
- Grip Diameter
- 0.7480 inches minimum and 0.7490 inches maximum
- Head Minor Diameter
- 0.904 inches minimum and 0.912 inches maximum
- Nominal Thread Diameter
- 0.750 inches
- Grip Length
- 2.302 inches minimum and 2.322 inches maximum
- Thread Quantity Per Inch
- 16
- Minimum Tensile Strength
- 220000 pounds per square inch
- Hardness Rating
- 46.0 rockwell c minimum and 50.0 rockwell c maximum overall
- Surface Finish
- 32.0 microinches bearing surface of head
- Surface Finish
- 32.0 microinches grip
- Material
- steel comp h11 overall
- Material Document And Classification
- ams 6487 assn std single material response overall
- Surface Treatment
- cadmium and chromate overall
- Surface Treatment Document And Classification
- mil-c-8837 ty 2 cl 2 mil spec single treatment response 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 |
|---|---|
| MS21297-12037 | Shear Bolt |
| VFK101G12-037 | Shear Bolt |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5306-01-077-9727?
Does the NSN 5306-01-077-9727 have a Schedule B code assigned?
Does NSN 5306-01-077-9727 require demilitarization?
Does NSN 5306-01-077-9727 contain precious materials?
Does NSN 5306-01-077-9727 contain hazardous materials?
When the NSN 5306-01-077-9727 was assigned to the Federal Catalog?
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