72550-5-12
View detailed technical data, stock status, and sourcing information for: 72550-5-12
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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.
0.540 inches minimum and 0.630 inches maximum thread length, right-hand thread direction, 1.320 inches minimum and 1.350 inches maximum fastener length, 3a thread class, double hexagon w/hole head style
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
- 0.540 inches minimum and 0.630 inches maximum
- Fastener Length
- 1.320 inches minimum and 1.350 inches maximum
- Head Style
- double hexagon w/hole
- Head Height
- 0.338 inches minimum and 0.358 inches maximum
- Width Between Flats
- 0.367 inches minimum and 0.376 inches maximum
- Extended Washer Diameter
- 0.521 inches minimum and 0.531 inches maximum
- Extended Washer Thickness
- 0.072 inches minimum and 0.092 inches maximum
- Grip Diameter
- 0.3110 inches minimum and 0.3120 inches maximum
- Nominal Thread Diameter
- 0.312 inches
- Grip Length
- 0.720 inches minimum and 0.780 inches maximum
- Thread Quantity Per Inch
- 24
- Minimum Tensile Strength
- 220000 pounds per square inch
- Hardness Rating
- 46.0 rockwell c minimum and 50.0 rockwell c maximum overall
- Part Name Assigned By Controlling Agency
- navy special project
- Material
- steel overall
- Material Document And Classification
- sps-m-107,standard pressed steel co mfr ref single material response overall
- Surface Treatment
- cadmium overall
- Surface Treatment Document And Classification
- mil-c-8837,ty 2,cl 2 mil 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 |
|---|---|
| 3186979-3 | Shear Bolt |
| 72550-5-12 | Shear Bolt |
FAQs
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What is the FSCG of the NSN 5306-00-498-6159?
Does the NSN 5306-00-498-6159 have a Schedule B code assigned?
Does NSN 5306-00-498-6159 require demilitarization?
Does NSN 5306-00-498-6159 contain precious materials?
Does NSN 5306-00-498-6159 contain hazardous materials?
When the NSN 5306-00-498-6159 was assigned to the Federal Catalog?
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