Eye Nut SUS 304 316 Stainless Steel Lifting Eye Nuts Threaded Eye Nut

Description

An eye nut is a type of fastener with a loop (or “eye”) at one end, designed for lifting, rigging, or securing loads. It is typically used with a shackle, hook, or rope to facilitate easy attachment and load handling. Eye nuts are commonly found in construction, marine, industrial, and transportation applications where secure lifting or anchoring is required.

Materials

Carbon Steel – General-purpose, cost-effective, suitable for moderate loads.
Alloy Steel – High strength, used in heavy-duty applications.
Stainless Steel (e.g., 304, 316) – Corrosion-resistant, ideal for marine and chemical environments.
Galvanized Steel – Zinc-coated for rust prevention in outdoor use.
Brass/Bronze – Used in electrical or marine applications for corrosion resistance.

Surface Treatments

Plain/Uncoated – Basic finish for indoor or non-corrosive environments.
Hot-Dip Galvanizing (HDG) – Zinc coating for rust resistance in harsh conditions.
Electroplating – Thin zinc or cadmium coating for moderate corrosion protection.
Passivation (Stainless Steel) – Chemical treatment to improve corrosion resistance.
Powder Coating – Decorative and protective layer for aesthetics and durability.

Specifications

Thread Size (Metric/Inch): M6, M8, M10, M12, M16, M20, 1/4″, 5/16″, 3/8″, 1/2″, etc.
Working Load Limit (WLL): Ranges from 0.1 ton to over 10 tons, depending on material and design.
Standards: DIN 582, DIN 581, ISO 3266, ASME B18.15, etc.
Safety Factor: Typically 4:1 or 5:1 (breaking strength vs. WLL).

Applications

Lifting & Rigging – Cranes, hoists, and material handling.
Marine & Offshore – Boat rigging, mooring, and deck hardware.
Construction – Scaffolding, structural anchoring, and suspension systems.
Transportation – Securing cargo in trucks, trailers, and shipping containers.
Industrial Machinery – Assembly lines, conveyor systems, and equipment mounting.
Electrical & Telecom – Antenna mounting and cable support.

Excellent Case: Eye Nut in Stage Rigging

In a large concert or theatrical production, eye nuts play a crucial role in safely suspending lighting fixtures, speakers, and other equipment from overhead rigging structures. Their reliability and ease of use make them indispensable in stage setups where quick adjustments and secure load-bearing are essential.

Why Eye Nuts Are Ideal for Stage Rigging?

Secure Attachment – Eye nuts provide a strong, threaded connection to beams, trusses, or rigging points, ensuring stability.
Quick & Flexible Setup – The “eye” loop allows for easy attachment of shackles, carabiners, or wire ropes, enabling fast adjustments during stage changes.
High Load Capacity – Made from carbon steel or stainless steel , they can safely support heavy lighting arrays, sound systems, and scenic elements.
Corrosion Resistance – Stainless steel (304/316) eye-nuts are preferred in humid or outdoor venues to prevent rust.
Safety Compliance – Rated for Working Load Limits (WLL) and often used with safety pins to prevent accidental loosening.

At a major music festival, stage technicians needed to suspend LED panels (500 kg total weight) from a steel truss system . They used:

Material: Stainless Steel (M12, DIN 582, WLL 1.2 tons)
Attachment: Secured to threaded rigging points on the truss.
Connection: Paired with grade-80 shackles and wire rope slings for flexibility.
Safety Check: Each eye nut was torqued properly and inspected before load-bearing.

Result:
✅ Stable & Adjustable Setup – Allowed quick height adjustments between performances.
✅ No Corrosion Issues – Stainless steel resisted moisture from outdoor conditions.
✅ Zero Failures – The rigging held securely throughout the event.