5306-01-374-5389
Find complete technical information, availability, and procurement data for: 5306-01-374-5389
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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.
2a thread class, right-hand thread direction, 0.056 inches nominal thread length, hexagon head style, 1.910 inches minimum and 1.970 inches maximum fastener 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
- 2a
- Thread Direction
- right-hand
- Thread Length
- 0.056 inches nominal
- Fastener Length
- 1.910 inches minimum and 1.970 inches maximum
- Head Style
- hexagon
- Head Height
- 0.150 inches minimum and 0.180 inches maximum
- Width Between Flats
- 0.438 inches nominal
- Hole Diameter
- 0.046 inches nominal
- Grip Diameter
- 0.2480 inches minimum and 0.2485 inches maximum
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 1.380 inches nominal
- Hole Quantity
- 3
- Hole Type
- drilled
- Thread Quantity Per Inch
- 28
- Hole Configuration Style
- hexagon corners
- Surface Finish
- 32.0 microinches bearing surface of head32.0 microinches grip
- Special Features
- item has cup point
- Material
- steel comp xm-13 overall
- Material Document And Classification
- ams 5629 assn std single material response overall
- Surface Treatment
- passivate overall
- Surface Treatment Document And Classification
- qq-p-35 fed spec single treatment response 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 |
|---|---|
| PC91055-3 | Close Tolerance Bolt |
FAQs
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