5306-00-121-8901
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An externally threaded fastener whose unthreaded portion is of a specified 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. 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. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.
right-hand thread direction, 3a thread class, dished hexagon head style, 1.122 inches minimum and 1.142 inches maximum fastener length, 0.236 inches minimum and 0.318 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
- 0.236 inches minimum and 0.318 inches maximum
- Fastener Length
- 1.122 inches minimum and 1.142 inches maximum
- Head Style
- dished hexagon
- Head Height
- 0.095 inches minimum and 0.110 inches maximum
- Width Between Flats
- 0.367 inches minimum and 0.376 inches maximum
- Grip Diameter
- 0.1885 inches minimum and 0.1894 inches maximum
- Shank Unthreaded Hole Diameter
- 0.070 inches minimum and 0.080 inches maximum first hole
- Nominal Thread Diameter
- 0.190 inches
- Grip Length
- 0.750 inches minimum and 0.766 inches maximum
- Thread Quantity Per Inch
- 32
- Hardness Rating
- 36.0 rockwell c minimum and 41.0 rockwell c maximum overall
- Distance From Head Largest Bearing Surface To Shank Hole Center
- 1.029 inches minimum and 1.059 inches maximum first hole
- Surface Finish
- 63.0 microinches bearing surface of head
- Surface Finish
- 63.0 microinches grip
- Special Features
- w/retaining element on shank
- Material
- steel overall
- Material Document And Classification
- mil-b-83050 mil spec single material response overall
- Surface Treatment
- cadmium and chromate overall
- Surface Treatment Document And Classification
- qq-p-416 ty 2 cl 2 fed spec all treatment responses overall
- Thread Series Designator
- unjf
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| Part Number | Name |
|---|---|
| 106467-3-12 | Close Tolerance Bolt |
| AS194-3-12 | Close Tolerance Bolt |
| CA4510-3-12 | Close Tolerance Bolt |
| CIPRD-MS27576-3-12R | Close Tolerance Bolt |
| MS27576-3-12 | Close Tolerance Bolt |
FAQs
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When the NSN 5306-00-121-8901 was assigned to the Federal Catalog?
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