MS21297-14054
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A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. Items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (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. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.
3a thread class, right-hand thread direction, 4.723 inches minimum and 4.753 inches maximum fastener length, spline extended washer head style, 1.338 inches minimum and 1.388 inches maximum 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
- 3a
- Thread Direction
- right-hand
- Thread Length
- 1.338 inches minimum and 1.388 inches maximum
- Fastener Length
- 4.723 inches minimum and 4.753 inches maximum
- Head Style
- spline extended washer
- Head Height
- 0.554 inches minimum and 0.594 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
- Head Minor Diameter
- 1.034 inches minimum and 1.042 inches maximum
- Nominal Thread Diameter
- 0.875 inches
- Grip Length
- 3.365 inches minimum and 3.385 inches maximum
- Thread Quantity Per Inch
- 14
- 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 |
|---|---|
| MS21297-14054 | Shear Bolt |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5306-01-059-1949?
Does the NSN 5306-01-059-1949 have a Schedule B code assigned?
Does NSN 5306-01-059-1949 require demilitarization?
Does NSN 5306-01-059-1949 contain precious materials?
Does NSN 5306-01-059-1949 contain hazardous materials?
When the NSN 5306-01-059-1949 was assigned to the Federal Catalog?
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