S293 US Type Eye Bolt

1. Eye Bolt:
   • This is the fundamental component. It’s a bolt with a looped head (the “eye”) instead of a traditional hexagonal or square head.
   • The “eye” is designed to have ropes, cables, slings, shackles, or hooks attached to it for lifting, pulling, or securing objects.
2. US Type:
   • This generally indicates that the eye bolt conforms to design standards, dimensions, and thread types commonly used in the United States.
   • Key characteristics often implied by “US Type” include:
     • Inch-based threading typically refers to Unified National Coarse (UNC) threads, which are the standard in the US.
     • Specific design proportions: The shape and size of the eye and shank often adhere to established US industry standards.
     • Most importantly for S293, “US Type” typically refers to a shouldered eye bolt.
3. S293:
   • This designation typically refers to a specific standard or style, often linked to or derived from US Federal Specification FF-B-580 (or similar industry standards, such as ASME B18.15). This specification outlines requirements for:
     • Material: Commonly forged carbon steel (e.g., C1030, C1035). Forging aligns the grain structure of the steel, making it significantly stronger and more durable than cast or machined alternatives, particularly for lifting applications.
     • Design: It specifies a shoulder-eyebolt. The “shoulder” is a distinct flange or collar located at the base of the eye, just before the threaded shank begins.
     • Dimensions and Tolerances: Ensures consistency, proper fit, and interchangeability.
     • Strength and Testing: The specification often includes requirements for proof load testing to ensure the eye bolt can handle its rated capacity.

Key Features and Importance of an S293 (Shouldered) Eye Bolt:

• Shoulder: This is a critical feature. The shoulder is designed to sit flush and bear firmly against the surface of the object being lifted or anchored.
  • Allows for Angular Lifts: Unlike plain pattern (non-shouldered or “regular pattern”) eye bolts, which are ONLY rated for perfectly vertical (0-degree) lifts, shouldered eye bolts like the S293 can safely handle angular loads (typically up to 45 degrees from the vertical axis of the bolt). The shoulder helps distribute the load and prevents bending stress on the threaded shank at the point where it enters the load.
  • Reduced Capacity at Angles: It’s crucial to note that the Working Load Limit (WLL) or rated capacity of a shouldered eye bolt decreases significantly as the angle of the lift increases. Always consult the manufacturer’s specifications for derating factors at different angles.
• Forged Construction: This manufacturing process provides superior strength, impact resistance, and fatigue life compared to cast or machined eye bolts.
• Applications: Widely used in industrial settings for:
  • Lifting machinery, dies, fixtures, and other heavy equipment.
  • Creating secure anchoring points for rigging.
  • Securing loads.

An S293 US Type Eye Bolt is a robust, forged steel, shouldered eye bolt manufactured to specific US standards. Its shoulder design is essential for its ability to handle both vertical and (appropriately derated) angular lifting applications, providing a reliable and strong attachment point in rigging and material handling operations. Always ensure it’s installed correctly and used within its specified Working Load Limits for the given angle of pull.