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Better Fastener Industry Co., Ltd. is a China-based Eye Bolts manufacturer supplying lifting and rigging attachment points alongside our wider bolt, nut, washer and screw range. Our eye bolts are produced in carbon steel and stainless steel with forged rings, threaded shanks and corrosion-resistant finishes for marine, construction, material handling and general industrial rigging.
Because eye bolts carry load rather than simply clamp parts, the working point, load direction, thread size and surface environment decide the correct configuration. We build each order around those inputs, from standard DIN, GOST and JIS patterns to drawing-based custom production.
What Our Eye Bolt Range Covers
Our eye bolt family sits inside the Bolts group and is offered in three established standard patterns, each matched to a different regional specification and rigging practice.
| Standard | Typical Form | Application Fit |
|---|---|---|
| DIN 444:2017 | Forged eye bolt with threaded shank, metric sizes | General lifting points, machine frames, jigs and fixtures |
| GOST 3033 (-1):1979 | Eye bolt to Russian/CIS dimensional practice | Heavy machinery, mining and plant equipment, CIS-spec projects |
| JIS B 2801:1996 Type C | Eye shackle bolt, Japanese industrial pattern | Shipbuilding, port handling, Japanese-spec industrial assemblies |
Plain-shank and shouldered versions are both available. Shouldered eye bolts are the correct choice where the load is applied at an angle, because the shoulder seats against the mating surface and carries the off-axis component that a plain shank cannot.
Ring Geometry, Load Direction and Working Load Limits
The closed circular eye distributes tensile load around the ring profile, which keeps stress concentration low and gives hooks, shackles and chains a stable interface. That geometry only performs as intended when the load stays within the rated direction.
- Axial loading: force along the shank axis is the design condition for plain-shank eye bolts.
- Angular loading: shouldered types tolerate off-axis pull and hold a higher working load limit than plain-shank equivalents.
- Seating: the eye must sit flat and fully engaged; a partially seated shoulder introduces bending into the shank.
- Thread engagement: the receiving thread depth and material strength govern the usable capacity as much as the bolt itself.
We confirm the load case with the customer before quoting, because the same nominal thread size can be supplied as a plain or shouldered bolt with different permitted working loads.
Materials and Surface Treatment
Eye bolts are forged in carbon steel and stainless steel. Forging aligns the grain flow around the ring, which is why forged rather than bent-wire construction is used for load-bearing eye bolts.
| Material / Finish | Environment | Notes |
|---|---|---|
| Carbon steel, self-colour | Indoor, dry industrial | Lowest cost; requires protection if humidity is present |
| Carbon steel, galvanized | Outdoor, humid, general construction | Zinc coating barrier against atmospheric corrosion |
| Stainless steel | Marine, chemical, wash-down areas | Grade selected against the actual exposure, not assumed |
Post-treatment capability across our works includes hot-dip galvanizing and blackening, which lets us handle eye bolts of different sizes and shapes within one production programme.
Where Eye Bolts Fit in a Fastener Programme
Eye bolts are usually a small line item inside a larger fastener package. We consolidate them with the rest of the bill of materials so a project receives one coordinated shipment rather than several partial deliveries.
- Lifting and rigging points on machinery, skids and fabricated frames, paired with U-Bolts where pipe or tube is clamped.
- Structural and equipment anchoring alongside Foundation Bolts on the same installation.
- General assembly work where Hexagon Head Bolts carry the clamping duty and eye bolts provide the handling interface.
- Matched nuts and washers drawn from our Nuts range so thread and property class stay consistent.
Custom Eye Bolts to Drawing or Sample
Customized production is our core business. Where a standard pattern does not match the application, we develop eye bolts from customer drawings or physical samples, covering shank length, thread pitch, ring diameter, shoulder form and material grade.
Configuration variables we work with:
- Thread size and pitch, metric or inch series
- Shank length, plain or shouldered
- Ring inside diameter and section
- Material grade and surface finish
- Marking, packaging and batch identification
Our engineering team reviews the drawing against the stated load case before production, so dimensional and material choices are settled at the quotation stage rather than after tooling.
Quality Control and Acceptance
Total quality management runs through the production process, with inspection after each operation and 100% final inspection of finished goods against customer requirements and international standards. Our laboratory is equipped with a spectrometer, CMM, X-ray flaw detector and related testing equipment, covering chemical composition, mechanical properties, non-destructive testing and geometric dimensions.
Proof load testing is available for safety-critical rigging applications. Where a project requires it, we agree the test method, sampling and record format before the order is released, and the resulting documentation travels with the shipment.
Production Capacity, Packaging and Delivery
We operate 12 energy-efficient production lines, including one fully automatic shell moulding line and four heat treatment lines, with annual output exceeding 20,000 tons. That capacity supports large-volume programmes while remaining responsive to small and medium batch purchases.
- Retail kits, blister packs, custom boxes and export cartons for different sales channels.
- Consolidated shipments combining eye bolts with other fastener lines on one order.
- Sea freight as the main mode, with air freight arranged for urgent deliveries.
- DDP delivery available, bringing goods directly to the customer's door.
Information We Use to Configure Your Solution
A workable eye bolt quotation depends on a small set of inputs. When these are supplied with the enquiry, we can confirm the standard, material and finish in one pass.
| Input | Why It Matters |
|---|---|
| Standard or drawing | Fixes dimensions, thread form and inspection criteria |
| Thread size and shank length | Determines engagement and seating in the mating part |
| Load direction and magnitude | Selects plain or shouldered form and the permitted working load |
| Material and finish | Matches the corrosion environment and service life |
| Quantity and delivery schedule | Sets batch planning and shipment consolidation |
| Testing and documentation | Defines proof load, inspection records and acceptance format |
| Packaging and marking | Aligns with warehouse, retail or project site handling |
Frequently Asked Questions
Which standards do your eye bolts follow?
We produce eye bolts to DIN 444:2017, GOST 3033 (-1):1979 and JIS B 2801:1996 Type C, and manufacture to customer drawings or samples where a project uses a different specification.
When should I choose a shouldered eye bolt instead of a plain-shank type?
Choose a shouldered eye bolt when the load is applied at an angle to the shank axis. The shoulder seats against the mating surface and carries the off-axis component, giving a significantly higher working load limit than a plain-shank bolt under the same angular pull.
What materials and finishes are available?
Eye bolts are forged in carbon steel and stainless steel. Carbon steel can be supplied self-colour or galvanized, and stainless grades are used for marine, chemical and wash-down environments. Hot-dip galvanizing and blackening are among the post-treatment processes we run.
Can you supply proof load testing for lifting applications?
Yes. Proof load testing is available for safety-critical rigging applications. We agree the test method, sampling and record format with the customer before production so the documentation matches the acceptance requirement.
Do you produce custom eye bolts as well as standard parts?
Customized production is our core business. We develop and manufacture eye bolts from customer drawings or samples, covering thread size, shank length, ring diameter, shoulder form, material and finish.
How are eye bolts packed and shipped?
Packaging is matched to the sales channel, from retail kits and blister packs to custom boxes and export cartons. Sea freight is our main transport mode, air freight is arranged for urgent deliveries, and DDP delivery is available for door-to-door supply.
