AN177-11
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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, 0.525 inches minimum and 0.704 inches maximum thread length, right-hand thread direction, 1.203 inches minimum and 1.250 inches maximum fastener length, 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
- 0.525 inches minimum and 0.704 inches maximum
- Fastener Length
- 1.203 inches minimum and 1.250 inches maximum
- Head Style
- hexagon
- Head Height
- 0.234 inches minimum and 0.266 inches maximum
- Width Between Flats
- 0.615 inches minimum and 0.627 inches maximum
- Hole Diameter
- 0.070 inches nominal
- Grip Diameter
- 0.4362 inches minimum and 0.4367 inches maximum
- Shank Unthreaded Hole Diameter
- 0.106 inches nominal first hole
- Nominal Thread Diameter
- 0.437 inches
- Grip Length
- 0.546 inches minimum and 0.578 inches maximum
- Hole Quantity
- 1
- Hole Type
- drilled
- Thread Quantity Per Inch
- 20
- 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
- Distance From Head Largest Bearing Surface To Shank Hole Center
- 0.046 inches nominal first hole
- Surface Finish
- 63.0 microinches bearing surface of head
- Surface Finish
- 63.0 microinches grip
- Material
- steel comp 8740 or steel comp 8630 or steel comp 8735 or steel comp 4037 or steel comp 4140 or steel comp 4130 overall
- Surface Treatment
- cadmium and chromate overall
- Surface Treatment Document And Classification
- qq-p-416 ty2 cl3 fed spec single treatment response overall
- Thread Series Designator
- unf
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5306-00-180-0544 | No Name Available | 03/01/2008 |
| 5306-00-803-1040 | No Name Available | 01/01/1960 |
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FAQs
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When the NSN 5306-00-275-9549 was assigned to the Federal Catalog?
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