PBF1478-12-49
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A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. 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. The unthreaded portion is of specific 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. A locking feature may be incorporated in the design of the head or threads. See bolt, machine and bolt, clevis.
right-hand thread direction, double hexagon w/hole head style, 3a thread class, 1.009 inches nominal thread length, 4.056 inches minimum and 4.086 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
- 3a
- Thread Direction
- right-hand
- Thread Length
- 1.009 inches nominal
- Fastener Length
- 4.056 inches minimum and 4.086 inches maximum
- Head Style
- double hexagon w/hole
- Head Height
- 0.701 inches minimum and 0.721 inches maximum
- Width Between Flats
- 0.803 inches minimum and 0.814 inches maximum
- Extended Washer Diameter
- 1.220 inches minimum and 1.230 inches maximum
- Extended Washer Thickness
- 0.178 inches nominal
- Grip Diameter
- 0.7485 inches minimum and 0.7490 inches maximum
- Nominal Thread Diameter
- 0.750 inches
- Grip Length
- 3.052 inches minimum and 3.072 inches maximum
- Thread Quantity Per Inch
- 16
- Minimum Tensile Strength
- 220000 pounds per square inch
- Surface Finish
- 32.0 microinches bearing surface of head32.0 microinches grip
- Material
- nickel alloy 718 overall
- Material Document And Classification
- ams 5662 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
- 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 |
|---|---|
| GB511GF-12-49 | Shear Bolt |
| GB511GF12-49 | Shear Bolt |
| PBF1478-12-49 | Shear Bolt |
| VCC0090-12-49 | Shear Bolt |
FAQs
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What is the FSCG of the NSN 5306-01-343-1751?
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Does NSN 5306-01-343-1751 require demilitarization?
Does NSN 5306-01-343-1751 contain precious materials?
Does NSN 5306-01-343-1751 contain hazardous materials?
When the NSN 5306-01-343-1751 was assigned to the Federal Catalog?
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