.250-28 UNJF-3A: A Comprehensive Guide
Overview
The .250-28 UNJF-3A is a type of fastener commonly used in various industries, including aerospace, defense, and automotive. In this article, we will delve into the details of this fastener, its specifications, applications, and benefits.
Specifications
The .250-28 UNJF-3A fastener is a hexagonal bodied, self-locking nut with a thread size of 0.250 inches and 28 threads per inch. The "UNJF" designation indicates that it is a unified national fine thread, while the "3A" signifies that it meets the Aerospace Standard AS9477.
Dimensions
The .250-28 UNJF-3A fastener has the following dimensions:
- Major Diameter: 0.250 inches
- Minor Diameter: 0.212 inches
- Thread Length: 0.250 inches
- Width Across Flats: 0.375 inches
- Width Across Corners: 0.435 inches
- Height: 0.250 inches
Applications
The .250-28 UNJF-3A fastener is widely used in various applications, including:
- Aerospace: Used in aircraft and spacecraft applications, such as engine mounts, landing gear, and structural components.
- Defense: Used in military applications, such as firearms, artillery, and armored vehicles.
- Automotive: Used in high-performance vehicles, such as racing cars and motorcycles.
- Industrial: Used in various industrial applications, such as heavy machinery, pumps, and valves.
Benefits
The .250-28 UNJF-3A fastener offers several benefits, including:
- High Strength: The fastener has a high tensile strength, making it suitable for high-stress applications.
- Corrosion Resistance: The fastener is made from corrosion-resistant materials, such as stainless steel or titanium, making it suitable for harsh environments.
- Self-Locking: The fastener's self-locking feature ensures that it stays in place, even in high-vibration applications.
- High Reliability: The fastener meets strict aerospace standards, ensuring high reliability and performance.
Conclusion
The .250-28 UNJF-3A fastener is a high-performance fastener widely used in various industries. Its unique specifications, dimensions, and applications make it an ideal choice for demanding environments. By understanding the benefits and characteristics of this fastener, engineers and designers can ensure the safety and reliability of their products.
