ST3M569-3-31-15
View detailed technical data, stock status, and sourcing information for: ST3M569-3-31-15
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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.
1.908 inches minimum and 1.968 inches maximum fastener length, thumb no. 3 head style, right-hand thread direction, 2a thread class, 1.846 inches minimum and 1.968 inches maximum 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
- 2a
- Thread Direction
- right-hand
- Thread Length
- 1.846 inches minimum and 1.968 inches maximum
- Fastener Length
- 1.908 inches minimum and 1.968 inches maximum
- Head Style
- thumb no. 3
- Head Height
- 0.750 inches minimum and 0.810 inches maximum
- Width Between Flats
- 0.840 inches minimum and 0.900 inches maximum
- Point Style
- flat
- Nominal Thread Diameter
- 0.190 inches
- Thread Quantity Per Inch
- 32
- Part Name Assigned By Controlling Agency
- navy special project
- Special Features
- cotter pin hole located 0.150 in. from end of screw to center of hole; hole dia 0.078 in. min 0.083 in. max
- Material
- steel corrosion resisting overall
- Surface Treatment
- passivate 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 |
|---|---|
| ST3M569-3-31-15 | Thumbscrew |
FAQs
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What is the FSCG of the NSN 5305-01-310-1598?
Does the NSN 5305-01-310-1598 have a Schedule B code assigned?
Does NSN 5305-01-310-1598 require demilitarization?
Does NSN 5305-01-310-1598 contain precious materials?
Does NSN 5305-01-310-1598 contain hazardous materials?
When the NSN 5305-01-310-1598 was assigned to the Federal Catalog?
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