Eye Bolts and Eye Nuts
G277 Shoulder Nut Eye Bolt Lifting Eye Bolts and Eye Nuts
A drop-forged steel shoulder nut eye bolt with a threaded shank and a shoulder nut that locks the eye in place under load. It provides a secure, vibration-resistant lifting point for cranes, hoists, and rigging systems. Sizes range from 1/4 x 2" to 1 1/2 x 15" with working load limits from 650 lbs to 24,000 lbs. The design features a 5:1 safety factor and hot-dipped galvanized finish for corrosion resistance in harsh environments.
- Size
- from 1/4 x 2" to 1-1/2 x 15"
- Material
- Forged Steel Processing: Drop Forged,Quenched and Tempered
- Finish
- Hot Dipped Galvanized
- Packing
- Cartons or Gunny Bags and then on Pallets
- Catalogue Family
- Eye Bolts and Eye Nuts
- Certificates
- EN 10204 3.1 material test certificate on request
CAD files are supplied on request via WhatsApp or email rather than published for open download.
Key Benefits
What G277 Shoulder Nut Eye Bolt Gives You
- The shoulder nut prevents the eye from rotating or backing off under dynamic or vibratory loads
- Drop-forged construction in quenched and tempered steel ensures high impact strength and fatigue resistance
- 5:1 safety factor provides a margin of safety above the working load limit for reliable performance
- Hot-dipped galvanized finish resists rust and corrosion in outdoor, marine, and industrial environments
- Threaded shank allows direct attachment to lifting hardware or structural members without additional fittings
- Eye design allows for easy attachment of slings, chains, or hooks without interference from the nut
- Available in a wide range of sizes and capacities to support lifting tasks from light to heavy industrial use
Application Scenarios
Where G277 Shoulder Nut Eye Bolt Is Used
- Lifting and moving heavy machinery components in industrial manufacturing and assembly lines
- Securing loads on trailers and flatbed trucks with tie-down systems using the eye as an anchor point
- Mounting crane hooks or lifting slings to structural steel beams or frames in construction projects
- Installing rigging points on offshore platforms or marine equipment exposed to saltwater and weather
- Using as a fixed anchor in temporary rigging setups for hoisting, pulling, or positioning heavy objects
- Supporting heavy-duty lifting in mining and energy sector applications where reliability is critical
Who It Is For
Buyers This Product Is Built For
- Industrial plant maintenance teams specifying reliable lifting points for machinery and equipment
- Construction contractors needing secure, durable rigging anchors for structural lifting
- Logistics and transport companies building tie-down systems for heavy freight and trailers
- Marine and offshore rigging suppliers requiring corrosion-resistant lifting hardware
- Manufacturers of lifting and rigging kits who need a standard, high-strength eye bolt with a locking nut
- Engineering firms specifying components for lifting systems with traceable safety factors and finishes
Problems It Solves
Problems This Product Removes
- Eye bolts backing off under vibration or repeated load cycles due to loose or unsecured nuts
- Rotating eyes causing misalignment or damage to slings and lifting gear during operation
- Lack of a high safety factor in standard eye bolts leading to overloading risks
- Rust and corrosion in untreated steel bolts reducing strength and lifespan in outdoor or wet environments
- Need to source separate nuts and bolts from different suppliers, increasing procurement complexity
- Inconsistent quality in forged components leading to premature failure under load
Technical Features
Technical Features
- Drop-forged body in quenched and tempered steel for high strength and impact resistance
- Shoulder nut design with a threaded shank that locks the eye in place
- 5:1 safety factor applied to all sizes unless otherwise specified
- Hot-dipped galvanized finish for corrosion protection in harsh environments
- Threaded shank with standard thread pitch for compatibility with standard nuts and fittings
- Eye diameter sized to accept standard lifting slings, chains, and hooks
- Working load limit stamped on the shank for traceability and field verification
Specifications
G277 Shoulder Nut Eye Bolt Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Material | Drop forged quenched and tempered steel |
|---|---|
| Safety Factor | 5:1 minimum breaking load to safe working load |
| Finish | Hot-dipped galvanized |
| Shank Diameter | 1/4 inch to 1 1/2 inch |
| Shank Length | 2 inches to 15 inches |
| Eye Diameter | 0.88 inches to 5.5 inches |
| Shoulder Nut Diameter | 0.5 inches to 3 inches |
Full size table on request. The catalogue publishes a full dimension and capacity table for this item. Ask on WhatsApp or by email and we will send it as a PDF.
Materials
Materials And Finishes
- Drop-forged carbon steel body with quench and temper heat treatment for high tensile strength
- Galvanized coating applied via hot-dip process to resist rust and corrosion
- Threaded shank made from high-strength steel compatible with standard nut sizes
- Shoulder nut fabricated from the same steel grade as the body for uniform strength and durability
Manufacturing Process
How This Product Is Made
1Drop forging of the eye and shank blanks
2Quench and temper heat treatment to achieve required hardness and strength
3Machining of the thread on the shank and the shoulder nut
4Assembly of the shoulder nut onto the shank
5Hot-dip galvanizing of the complete unit
6Proof load testing and inspection of the finished product
7Stamping of working load limit and material marking on the shank
Quality Control
Quality Control On Every Batch
- Proof load testing on production batches before release
- Dimensional tolerance check against published size table
- Breaking strength validation to confirm the 5:1 design factor
- Visual inspection for surface defects, coating integrity, and thread quality
- Material Test Certificate to EN 10204 3.1 supplied with orders
- Third-party inspection accepted at the China warehouse before shipment
Documentation
Certification And Documentation Supplied
- Material Test Certificate to EN 10204 3.1 supplied with orders
- Working load limit and traceability marking stamped on the shank
Customisation
Customisation Options
- Custom tonnage stamping on the shank
- Private label and OEM marking available
- Custom surface finish including zinc plating, powder coating, or electrophoretic black
- Custom shank length and diameter built to a supplied drawing
- Packing configuration adjusted for carton count, pallet pattern, or retail pack
Compare
How It Compares With The Alternatives
An honest read on where this pattern wins and where another one would serve you better.
| Alternative | Honest Trade Off |
|---|---|
| Standard eye bolt with lock nut | The shoulder nut design provides a more secure lock and prevents rotation under load, while a standard lock nut may loosen over time |
| Eye bolt with screw pin | The shoulder nut is more secure against vibration and does not require a cotter pin, reducing the risk of loss or failure |
| Eye bolt with threaded nut | The shoulder nut offers a more compact and stable design with better load distribution across the eye |
| Uncoated steel eye bolt | The hot-dipped galvanizing provides superior corrosion resistance in outdoor and marine environments |
Use Guide
How To Use And Inspect G277 Shoulder Nut Eye Bolt
- Verify the stamped working load limit matches the calculated load before lifting
- Ensure the shoulder nut is fully tightened and seated against the eye before use
- Inspect the galvanized coating for damage before each use; replace if coating is compromised
- Do not exceed the rated working load limit under any condition
- Avoid side loading the eye; keep the load aligned with the axis of the shank
- Retire the bolt if the eye shows deformation, the nut is stripped, or the marking is illegible
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Answers
G277 Shoulder Nut Eye Bolt FAQ
What is the safety factor on these eye bolts?
A standard 5:1 safety factor is applied, so the minimum breaking load is five times the stated safe working load.
Can the working load limit be customized or stamped differently?
Yes. Custom tonnage stamping is available on request, and the marking can be adjusted to your specifications.
Is the finish available in other options besides hot-dipped galvanized?
Yes. Custom finishes including zinc plating, powder coating, and electrophoretic black are available to order.
Are Material Test Certificates provided with the order?
Yes. A Material Test Certificate to EN 10204 3.1 is supplied with each order upon request.
Can these be made to a custom drawing?
Yes. Custom shank lengths, diameters, and assembly configurations can be built to a supplied drawing.
How are they packed for export?
Standard packing is in cartons or gunny bags, then palletized. We can configure the carton count and pallet pattern to suit your warehouse or retail requirements.
What sizes are available?
Sizes range from 1/4 x 2″ to 1 1/2 x 15″ shank diameter and length. The full size table includes working load limits, dimensions, and weight per unit.
Need A Quote On G277 Shoulder Nut Eye Bolt
Send the sizes, the finish and the quantity on WhatsApp or by email. You get a priced reply within 24 hours and a straight answer on stock.
We reply within 24 hours on WhatsApp or by email. Send a drawing, a photo or a bill of materials and we will quote it as it stands.