The Grade 80 Eye Nut (ENT Type) is a high-strength, female-threaded lifting component designed to serve as a reliable, removable attachment point for heavy machinery and equipment. Conforming to DIN 582 standards, it provides a secure connection for hooks and slings in rigorous industrial rigging and hoisting applications.
*Screws onto existing studs for heavy lifting
| Product | Material | Lifting Capacity (WLL)* |
|---|---|---|
| Standard DIN 582 | Carbon Steel (C15) | approx. 1.2 Tonnes |
| Grade 80 Eye Nut (This Product) |
Alloy Steel | approx. 6.0 Tonnes (Up to 5x Stronger) |
| Item No. | Size (mm) | WLL (Tonnes) | Dimensions (mm) | Weight (kg) |
Product Code | |||
|---|---|---|---|---|---|---|---|---|
| Vertical (0°) | Side (90°) | D | Φ | L | ||||
| 8-ENT-6 | M6 | 0.4 | 0.15 | 36 | 20 | 36 | 0.05 | 502037006 |
| 8-ENT-8 | M8 | 0.8 | 0.4 | 36 | 20 | 36 | 0.05 | 502037008 |
| 8-ENT-10 | M10 | 1 | 0.4 | 45 | 25 | 45 | 0.09 | 502037010 |
| 8-ENT-12 | M12 | 2 | 0.75 | 54 | 30 | 53 | 0.16 | 502037012 |
| 8-ENT-14 | M14 | 3 | 1 | 63 | 35 | 62 | 0.24 | 502037014 |
| 8-ENT-16 | M16 | 4 | 1.5 | 63 | 35 | 62 | 0.24 | 502037016 |
| 8-ENT-18 | M18 | 5 | 2 | 72 | 40 | 71 | 0.34 | 502037018 |
| 8-ENT-20 | M20 | 6 | 2.3 | 72 | 40 | 71 | 0.36 | 502037020 |
| 8-ENT-22 | M22 | 7 | 2.8 | 81 | 45 | 81 | 0.58 | 502037022 |
| 8-ENT-24 | M24 | 8 | 3.2 | 90 | 50 | 90 | 0.72 | 502037024 |
| 8-ENT-27 | M27 | 10 | 4 | 90 | 50 | 90 | 0.72 | 502037027 |
| 8-ENT-30 | M30 | 12 | 4.5 | 108 | 60 | 109 | 1.32 | 502037030 |
| 8-ENT-33 | M33 | 14 | 5 | 108 | 60 | 109 | 1.29 | 502037033 |
| 8-ENT-36 | M36 | 16 | 7 | 126 | 70 | 128 | 2.09 | 502037036 |
| 8-ENT-39 | M39 | 20 | 8 | 126 | 70 | 128 | 2.09 | 502037039 |
| 8-ENT-42 | M42 | 24 | 9 | 144 | 80 | 147 | 3.11 | 502037042 |
| 8-ENT-45 | M45 | 28 | 10 | 144 | 80 | 147 | 3.05 | 502037045 |
| 8-ENT-48 | M48 | 32 | 12 | 166 | 90 | 168 | 5.02 | 502037048 |
| 8-ENT-52 | M52 | 36 | 13.5 | 166 | 90 | 168 | 4.94 | 502037052 |
| 8-ENT-56 | M56 | 40 | 15 | 184 | 100 | 187 | 6.69 | 502037056 |
| 8-ENT-64 | M64 | 50 | 17 | 206 | 110 | 208 | 9.30 | 502037064 |
Types, Installation, Safety & Working Load Limits
An eye bolt is a mechanical fastener with a threaded shaft and a loop (eye) at one end. It is designed to be screwed into a structure or equipment to provide a secure lifting point or a tie-down point.
Eye bolts are critical components in rigging operations, allowing wire ropes, shackles, or cables to be attached to loads such as motors, containers, mold plates, and machinery for lifting, tensioning, or securing.
Choosing the correct pattern is crucial for safety. The two most common types are:
Features: Has a "shoulder" or "collar" between the eye and the threaded shank.
Use: Essential for angular lifting (lifting at an angle). The shoulder presses against the mating surface to support the bolt and prevent bending.
Features: No shoulder; the thread transitions directly to the eye.
Use: Designed strictly for vertical lifting only (in line with the bolt axis).
Features: Designed to be passed through a hole and secured with a nut on the other side.
Use: Typically used when there is no pre-tapped hole available, such as through a beam or a post.
Features: Has a coarse lag screw thread and a sharp point.
Use: Designed for screwing into wood or light duty anchors. Not for heavy machinery lifting.
For Machinery Eye Bolts (Shoulder Pattern), the shoulder must sit completely flush and firm against the mating surface. If there is a gap, the bolt is acting as a lever and is significantly weaker.
Lifting at an angle significantly reduces the Working Load Limit (WLL) of an eye bolt. Plain pattern eye bolts must NEVER be used for angular lifts.
When lifting at an angle, you must de-rate the bolt's capacity. Standard carbon steel eye bolts generally follow these guidelines:
| Direction of Pull | Angle (from Vertical) | Remaining Capacity (% of WLL) |
|---|---|---|
| Vertical Pull | 0° | 100% WLL |
| Slight Angle | 1° – 15° | 55% - 80% WLL (Check Mfr Specs) |
| Standard Angular Lift | 16° – 45° | 25% - 30% WLL |
| Extreme Angle | > 45° | NOT RECOMMENDED (Use Swivel Hoist Ring) |
*Note: Always consult the specific manufacturer's load chart, as values can vary by brand and material (e.g., DIN 580 vs. ASTM A489).
Grade 80 Sling Components are the long-established industry standard for chain slings and heavy lifting. Fully compliant with international lifting regulations and designed for durability.
Used to connect the sling to a crane or hoist hook.
End fittings for secure load attachment.
Essential hardware to join chains or fittings.
The core lifting medium and adjustment tools.
| Feature | Grade 80 | Grade 100 |
|---|---|---|
| Strength Level | Standard Industry Standard | +25% Higher |
| Component Size | Larger | Smaller (for same WLL) |
| Weight | Heavier | Lighter |
| Cost | More Cost-Effective | Higher |
