Eye Nut
What are Eye Nuts?
An Eye Nut is a type of internally threaded fastener with a circular loop or “eye” on one end, designed primarily for lifting and rigging applications. It is screwed onto a bolt or threaded rod to provide an attachment point for slings, hooks, chains, or ropes.
Asiad Steel Industries is a trusted manufacturer, supplier, and exporter of premium-quality eye nuts available in diverse sizes, grades, and finishes, ensuring secure lifting and fastening applications for a wide range of industrial uses globally.
Key Features
Leak-Proof
Jointing
Durable
Construction
Easy Installation
& Removal
Wide
Compatibility
Corrosion
Resistant
Specifications
| Specification Category | Parameter / Feature | Details / Options |
|---|---|---|
| Size Range | Nominal Size | M6 to M100 (custom sizes available) |
| Load Ratings | Working Load Limit (WLL) | 0.1 to 50+ Tonnes (depending on size & material) |
| Safety Factor | 4:1 or 5:1 (as per lifting standards) | |
| Product Types | Eye Nut Variants | DIN 582 Eye Nuts, Lifting Eye Nuts, Heavy-Duty Eye Nuts |
| Material Options | Steel Grades | Carbon Steel (C15, C20), Alloy Steel |
| Stainless Steel | AISI 304, AISI 316 | |
| Other Options | Galvanized Steel, Zinc-Plated, Hot-Dip Galvanized | |
| Standards & Certifications | DIN | DIN 582 |
| ASTM | ASTM A193 (for threaded fasteners), ASTM A276 (for SS) | |
| ISO | ISO 3266 | |
| Certifications | ISO 9001, CE Marking, Test Certificates (EN 10204 3.1) | |
| Design Features | Thread Types | Metric (M6 – M100), UNC, UNF |
| Thread Tolerance | As per ISO 965 / DIN 13 | |
| Eye Shape | Circular (standard), Reinforced Heavy-Duty | |
| Manufacturing Process | Forged / Machined | |
| Coating & Surface Finish | Anti-Corrosion Coating | Hot-Dip Galvanized, Electro-Galvanized |
| Optional Coatings | PTFE, Phosphate, Black Oxide | |
| Surface Finish | Plain, Polished, Pickled | |
| Testing & Inspection | Proof Load Test | 2 × WLL |
| Breaking Load Test | Minimum 4–5 × WLL | |
| Non-Destructive Testing | Ultrasonic (UT), Magnetic Particle Testing (MPT) | |
| Destructive Testing | Tensile, Hardness, Impact |
Dimensions
| Nominal Thread (d) | Eye Outer Diameter (D) | Eye Inner Diameter (d1) | Height (h) | Eye Thickness (e) | Base Diameter (D2) | Base Height (m) | Working Load Limit (WLL) |
|---|---|---|---|---|---|---|---|
| M6 | 20 mm | 12 mm | 36 mm | 7 mm | 16 mm | 6 mm | 0.07 T |
| M8 | 25 mm | 15 mm | 40 mm | 8 mm | 20 mm | 7 mm | 0.14 T |
| M10 | 30 mm | 18 mm | 45 mm | 9 mm | 25 mm | 9 mm | 0.23 T |
| M12 | 36 mm | 20 mm | 54 mm | 11 mm | 30 mm | 10 mm | 0.34 T |
| M14 | 40 mm | 23 mm | 58 mm | 12 mm | 34 mm | 11 mm | 0.50 T |
| M16 | 45 mm | 25 mm | 63 mm | 13 mm | 38 mm | 12 mm | 0.70 T |
| M18 | 50 mm | 30 mm | 70 mm | 14 mm | 42 mm | 13 mm | 0.80 T |
| M20 | 50 mm | 30 mm | 70 mm | 14 mm | 42 mm | 13 mm | 1.20 T |
| M24 | 60 mm | 35 mm | 90 mm | 18 mm | 50 mm | 15 mm | 1.80 T |
| M27 | 65 mm | 40 mm | 100 mm | 20 mm | 55 mm | 17 mm | 2.50 T |
| M30 | 70 mm | 45 mm | 110 mm | 22 mm | 60 mm | 18 mm | 3.60 T |
| M33 | 75 mm | 50 mm | 115 mm | 24 mm | 66 mm | 20 mm | 4.30 T |
| M36 | 80 mm | 55 mm | 125 mm | 26 mm | 70 mm | 22 mm | 5.10 T |
| M39 | 90 mm | 60 mm | 135 mm | 28 mm | 75 mm | 24 mm | 6.20 T |
| M42 | 100 mm | 65 mm | 140 mm | 30 mm | 80 mm | 26 mm | 7.20 T |
| M45 | 110 mm | 70 mm | 150 mm | 32 mm | 85 mm | 28 mm | 8.20 T |
| M48 | 120 mm | 75 mm | 160 mm | 34 mm | 90 mm | 30 mm | 9.20 T |
| M52 | 130 mm | 80 mm | 170 mm | 36 mm | 100 mm | 32 mm | 11.0 T |
| M56 | 140 mm | 90 mm | 180 mm | 38 mm | 110 mm | 34 mm | 13.0 T |
| M64 | 160 mm | 100 mm | 200 mm | 42 mm | 120 mm | 36 mm | 16.0 T |
| M72 | 180 mm | 110 mm | 220 mm | 46 mm | 135 mm | 40 mm | 20.0 T |
| M80 | 200 mm | 120 mm | 240 mm | 50 mm | 150 mm | 45 mm | 25.0 T |
| M100 | 240 mm | 140 mm | 280 mm | 60 mm | 180 mm | 50 mm | 35.0 T |
Mechanical Properties
| Property | Value | Unit / Standard |
|---|---|---|
| Tensile Strength | 400 – 750 | MPa (Carbon Steel, Stainless Steel grades) |
| Yield Strength | 170 – 450 | MPa |
| Hardness | 120 – 220 | HB (Brinell, material-dependent) |
| Elongation | ≥ 18 – 30 | % |
| Density | 7.85 (Carbon/Alloy Steel), 8.0 (Stainless Steel) | g/cm³ |
| Impact Toughness | ≥ 27 – 70 | J (Charpy V-notch, grade-dependent) |
| Modulus of Elasticity (E) | ~200 | GPa |
| Fatigue Strength | 250 – 450 | MPa |
| Corrosion Resistance | Good to Excellent (Best in SS 316, lower in CS) | – |
| Thermal Conductivity | 15 – 50 | W/m·K |
| Coefficient of Thermal Expansion | 11 – 17 ×10⁻⁶ | /°C |
| Yield Ratio (YS/UTS) | 0.40 – 0.65 | – |
| Poisson’s Ratio | 0.27 – 0.30 | – |
| Brinell Hardness Range | 120 – 220 | HB |
| Surface Finish | Galvanized / Polished / Coated (as per DIN 582 or ASTM) | – |
| Thread Standard | Metric (M6–M100), UNC/UNF (optional) | DIN 582 / ISO 3266 |
| Operating Temperature Range | -40 to 400 | °C (depending on alloy & coating) |
| Safety Factor | 4:1 or 5:1 | Lifting applications |
| Working Load Limit (WLL) | 0.1 to 50+ Tonnes | As per size & grade |
Chemical Composition
| Element | SS 304 (%) | SS 304L (%) | SS 316 (%) | SS 316L (%) |
|---|---|---|---|---|
| Chromium (Cr) | 18.0 – 20.0 | 18.0 – 20.0 | 16.0 – 18.0 | 16.0 – 18.0 |
| Nickel (Ni) | 8.0 – 10.5 | 8.0 – 12.0 | 10.0 – 14.0 | 10.0 – 14.0 |
| Carbon (C) | ≤ 0.08 | ≤ 0.03 | ≤ 0.08 | ≤ 0.03 |
| Manganese (Mn) | ≤ 2.00 | ≤ 2.00 | ≤ 2.00 | ≤ 2.00 |
| Silicon (Si) | ≤ 1.00 | ≤ 1.00 | ≤ 1.00 | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.045 | ≤ 0.045 | ≤ 0.045 | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 | ≤ 0.030 | ≤ 0.030 | ≤ 0.030 |
| Iron (Fe) | Balance | Balance | Balance | Balance |
| Molybdenum (Mo) | — | — | 2.0 – 3.0 | 2.0 – 3.0 |
Applications of Eye Nuts
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What is the primary use of an eye nut?
Can eye nuts be used for overhead lifting?
Are stainless steel eye nuts available?
Do you provide test certificates for lifting hardware like eye nuts?
