7103-SS-20
View detailed technical data, stock status, and sourcing information for: 7103-SS-20
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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.
3a thread class, 0.365 inches minimum and 0.385 inches maximum thread length, knurled no. 1 head style, 0.500 inches nominal fastener length, right-hand thread direction
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
- 0.365 inches minimum and 0.385 inches maximum
- Fastener Length
- 0.500 inches nominal
- Head Style
- knurled no. 1
- Head Diameter
- 0.375 inches minimum and 0.395 inches maximum
- Head Height
- 0.173 inches minimum and 0.203 inches maximum
- Nominal Thread Diameter
- 0.138 inches
- Thread Quantity Per Inch
- 32
- Material
- steel corrosion resisting overall
- Material Document And Classification
- astm a581 assn std single material response or astm a582 assn std single material response overall
- Surface Treatment
- passivate overall
- Surface Treatment Document And Classification
- astm a380 assn std single treatment response overall
- Thread Series Designator
- unc
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 |
|---|---|
| 7103-SS-20 | Thumbscrew |
FAQs
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When the NSN 5305-01-339-3186 was assigned to the Federal Catalog?
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