NASM173 THRU NASM186
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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.
hexagon head style, 3a thread class, right-hand thread direction, 0.656 inches nominal fastener length, 0.468 inches minimum 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
- 0.468 inches minimum
- Fastener Length
- 0.656 inches nominal
- Head Style
- hexagon
- Head Height
- 0.140 inches minimum and 0.172 inches maximum
- Width Between Flats
- 0.428 inches minimum and 0.440 inches maximum
- Hole Diameter
- 0.046 inches nominal
- Grip Diameter
- 0.2487 inches minimum and 0.2492 inches maximum
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 0.188 inches nominal
- Hole Quantity
- 1
- Hole Type
- drilled
- Thread Quantity Per Inch
- 28
- Minimum Tensile Strength
- 125000 pounds per square inch
- Hardness Rating
- 26.0 rockwell c minimum and 32.0 rockwell c maximum overall
- Hole Configuration Style
- hexagon flats
- Surface Finish
- 63.0 microinches bearing surface of head
- Surface Finish
- 63.0 microinches grip
- Material
- steel comp 4140 or steel comp 8740 or steel comp 8630 or steel comp 8735 or steel comp 4130 or steel comp 4037 overall
- Surface Treatment
- cadmium and chromate overall
- Surface Treatment Document And Classification
- qq-p-416,ty 2,cl 3 fed spec all treatment responses 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 |
|---|---|
| AN174H5A | Close Tolerance Bolt |
| N5108302105 | Close Tolerance Bolt |
| NASM173 THRU NASM186 | Close Tolerance Bolt |
FAQs
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What is the FSCG of the NSN 5306-00-141-4517?
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Does NSN 5306-00-141-4517 require demilitarization?
Does NSN 5306-00-141-4517 contain precious materials?
Does NSN 5306-00-141-4517 contain hazardous materials?
When the NSN 5306-00-141-4517 was assigned to the Federal Catalog?
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