- Precision-formed eye ensures secure load attachment
- Consistent thread accuracy for stable installation
- Suitable for vertical and angled lifting applications
- Durable construction for long-term reliability
- Compatible with cables, hooks, and rigging hardware
- Description
- Features
- Specifications
Machine eye bolts are precision-engineered lifting and rigging fasteners designed for secure load attachment in industrial, construction, and manufacturing applications. With a fully threaded shank and precision-formed eye loop, these bolts provide reliable vertical lifting, anchoring, and fastening solutions across diverse operational environments.
G-Fast Distribution supplies industrial-grade machine eye bolts manufactured to exacting dimensional tolerances and industry standards, ensuring consistent performance under demanding load conditions.
What Are Machine Eye Bolts?
Machine eye bolts are externally threaded fasteners featuring a closed eye loop at the top, specifically designed for vertical lifting and anchoring applications. The eye formed from the bolt head creates an attachment point for cables, chains, shackles, and hoisting hardware.
Unlike forged eye bolts, machine eye bolts are machined from bar stock, providing:
- Uniform thread accuracy and consistency
- Precision eye geometry for optimal load distribution
- Smooth shank finish for easier insertion
- Suitable for machinery, structural assemblies, and equipment installations
These fasteners are essential components in material handling, rigging operations, and permanent or temporary anchor point installations where strength and reliability are non-negotiable.
Typical Applications
Material Handling & Logistics Machine eye bolts serve as attachment points in warehousing, bulk material handling systems, and cargo securing operations.
Machinery Installation & Maintenance Used for equipment mounting, suspended component installation, and temporary rigging during assembly or service work.
Anchor Point Installation Permanent anchoring for cables, chains, and structural bracing in industrial facilities and infrastructure projects.
Hoisting & Lifting Operations Provide secure lifting eyes for hand-operated hoists, chain hoists, and machinery-mounted lifting equipment.
Construction & Fabrication Essential hardware for securing structural elements, connecting heavy components, and managing loads on job sites.
Electrical & HVAC Systems Used in cable routing, duct suspension, and equipment mounting in commercial building installations.
Material & Finish Selection Guide
Carbon Steel with Zinc-Plating Recommended for general industrial use, indoor applications, and cost-sensitive projects. Zinc-plating provides basic corrosion resistance suitable for standard factory environments.
Hot-Dip Galvanized Carbon Steel Ideal for outdoor, construction, and weather-exposed applications. Offers superior long-term corrosion protection in harsh environments.
Stainless Steel (304) Best choice for marine, food processing, chemical, and coastal applications. Provides excellent corrosion resistance with moderate strength.
Stainless Steel (316) Premium option for marine and severely corrosive environments. Superior resistance to chloride attack and harsh chemicals.
Load Capacity & Safety Considerations
Machine eye bolt working load limits depend on:
- Thread diameter and size
- Material grade and tensile strength
- Lifting angle (vertical vs. angled applications)
- Load distribution (single vs. multiple attachment points)
Key Features & Benefits
Precision-Formed Eye Design The carefully engineered eye ensures secure load distribution and safe cable or chain attachment without deformation during heavy-duty operations.
Consistent Thread Accuracy Machine threads provide reliable engagement, stable installation, and predictable holding strength across all size ranges.
Versatile Lifting Capability Suitable for vertical lifting applications where precision and stability are critical. Thread design allows easy installation and removal.
Durable Construction Available in carbon steel and stainless steel for long-term reliability in corrosive and non-corrosive environments.
Machined Eye Bolt Broad Material & Finish Options
- Carbon steel with zinc-plated or hot-dip galvanized finishes for standard industrial use
- Stainless steel (304/316) for marine, chemical, and outdoor applications
- Multiple finish options for enhanced corrosion resistance
UNC/UNF Thread Standards Manufactured to unified thread specifications for compatibility with standard nuts, washers, and rigging hardware.
| Specification | Details |
| Material Options | Carbon Steel, Stainless Steel (304/316) |
| Thread Types | UNC (Unified Coarse), UNF (Unified Fine) |
| Eye Type | Standard Machine Eye (Closed Loop) |
| Finish Options | Zinc-Plated, Hot-Dip Galvanized, Self-Colored |
| Load Rating | Based on size, thread pitch, and material |
| Manufacturing Standard | ASME B18.15 Type 2, ASTM A489 |
| Thread Accuracy | Class 2A tolerance for consistent performance |
Available Sizes & Thread Options
Machine eye bolts are offered in a comprehensive range of imperial and metric sizes to accommodate diverse load requirements:
- Imperial Sizes: #10-24 through 1.25-7 (commonly stocked 1/4-20 through 3/4-10)
- Metric Sizes: M5-0.8 through M20-2.5 (DIN/ISO compatible)
- Shank Lengths: Standard and custom lengths available
- Custom Configurations: Special thread pitches and eye diameters available upon request