According to ASME B30.26, non-shouldered eyebolts shall only be used when the angle of loading is

• A. 0°
• B. 15°
• C. 30°
• D. 45°

Answer: (A)

Non-shouldered eyebolts are designed for straight, axial loading. When the load is applied exactly along the bolt’s axis (0°), the force is purely in line with the eye, which keeps the stress right where the eye and threads are strongest. Any angle away from 0° introduces a bending and lateral component to the load. That bending moment concentrates stress on the eye and threads, increasing the risk of deformation, cracking, or failure. Because non-shouldered eyebolts aren’t built to handle those angled forces, ASME B30.26 specifies that they must be used only with a loading angle of 0°.

Smaller angles (like 15°) or larger ones (30°, 45°) would create those undesirable bending effects, which is why they’re not allowed for non-shouldered eyebolts.