We achieve high quality and short lead times through integrated production, from mold design to hot forging, secondary processing, and surface treatment.
Precision hot-forged products can be manufactured with high precision, resulting in a finely textured forged surface with clear and sharp markings.
We provide high-quality, reliable products through two inspections using specialized jigs and gauges: one during the manufacturing process and another before shipment.
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- Visiting and inspecting the permanent exhibition hall
- List of Exhibiting Companies
- Naniwa Iron Works Co., Ltd.
Exhibition booths: 24
Naniwa Iron Works Co., Ltd. Naniwa Tekko
President and Representative Director
Tadahiko Horikawa
Main products
eye bolt
Multi-eye bolt
Ultimate Eyebolt
Business content
We handle everything from mold design to hot forging, secondary processing, and surface treatment, enabling us to produce everything from prototypes and single pieces to mass-produced items.
We hold the No. 1 market share in Japan for eye bolts. We manufacture and sell fastening components using precision die forging technology, including our patented multi-eye bolt.
Product and Technology Introduction
The technique supported by precision hot forging
Integrated production from mold making
5t Air Stamp Hammer
die forging
Production capacity: 10,000 to 80,000 units (negotiable) *Equipment capacity: 500 tons per month.
Materials processed: Iron (SS, SC, SCM, SCr), stainless steel (SUS), titanium alloy (6AI-4V), high-speed steel.
Ultimate Eyebolt
A revolutionary evolution without the need for special tools.
Ultimate Eyebolt
A sister product to the eyebolt, which can be easily installed by turning the integrated hexagonal part by hand.
(Features)
- Can be suspended horizontally
The ring rotates 360 degrees, so it faces the direction of tension.
Because the ring is eccentric, it naturally aligns in the direction of tension.
- No special tightening tool is required; installation is easy with hand tightening.
- It does not interfere with the object.
• Can be used repeatedly.
Multi-eye bolt
The rotating function enables safe horizontal lifting of heavy objects!
Multi-eye bolt
●Standard type
This product allows for safe and secure "horizontal lifting" and "righting" operations of heavy objects, which were not possible with conventional JIS eyebolts.
- Safe transport, lifting, moving, and installation of heavy objects at civil engineering and construction sites.
Multi-eyebolt: Patent No. 3606802, No. 3868439
NETIS registration number KK-150017-A
☆ Awarded the 2016 "300 Thriving Small and Medium-Sized Enterprises (Technical Skills Category)"
Multi-eye bolt hybrid
● Hybrid type
• Small body capable of handling heavy loads
- Compared to the standard model, a wider variety of load capacities are available.
Multi-eyebolt hybrid... Patent No. 4369989
Screw adapter
You can change the screw diameter!
Screw adapter
It is possible to attach small, rotating eyebolts to match the weight of the object being lifted.
(Features)
- Smaller screws can be upgraded to larger screws.
- Attaching multi-eyebolts or multi-eyebolt hybrids to existing female threads improves space and efficiency.
* "Ultimate Eyebolt" is also compatible.
- Existing multi-eye bolts and multi-eye bolt hybrids can be installed, resulting in cost savings.
* "Ultimate Eyebolt" is also compatible.
The work was completed in less than half the usual time.
It is used as a safety measure for suspended scaffolding.
Return buckle
This tool allows you to tighten and loosen turnbuckles that could previously only be turned by hand using tools such as electric drills, impact drivers, and ratchet wrenches. Its overall length is half that of a standard turnbuckle, making it a compact design.
The hook is angled, making it easy to attach to a chain.
Return buckle ARA
The ARA type has a wide screw pitch, making it easier to remove any clogging in the screw threads.
The overall length is half that of a turnbuckle, making it a compact design.
The tool belt offers ample storage space, which helps reduce the burden of work.
Yokobei (3S)
- Lifting equipment specifically designed for horizontal lifting
JIS eyebolts allow for dangerous horizontal lifting.
・It's not just a hook type, but also a shackle attachment type.
Easily attachable, such as wire ropes.
This product is certified to Japanese Industrial Standards as a critical safety component.
Naniwa Iron Works Co., Ltd.'s No. 1 product in Japan by market share.
eye bolt
This is a "lifting device" defined by JIS standards as a bolt used to screw in and lift loads.
It is one of the most basic and important metal fittings used in all kinds of workplaces, including construction, manufacturing, and logistics.
Material variations include: raw material, zinc plated, chromate plated, hot-dip galvanized, stainless steel, etc.
Long-legged eyebolt
This type of eyebolt has a longer threaded section below the head than typical eyebolts, making it suitable for installation in recessed locations and for through-bolt fastening into thick materials. It is used for lifting heavy objects and conforms to JIS B1168 as a reference standard.
Material variations include: fabric, zinc plated, chromate plated, hot-dip galvanized, stainless steel, etc.
Company profile
- Company name
-
Naniwa Iron Works Co., Ltd.
- address
-
3-6-15 Benten, Minato-ku, Osaka City, Osaka Prefecture 552-0007
- representative
-
Tadahiko Horikawa
- Founding year/Establishment year
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1949 / 1959
- telephone number
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06-6571-2171
- FAX number
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06-6572-8858
- Company website
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New product introduction (https://naniwa-iron.com/new_product/)
- capital
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48,000,000 yen
ISO9001 certified
Health Management Excellent Company 2025
Osaka Manufacturing Excellence Award (FY2009)
<Other achievements and awards>
・23rd Small and Medium Enterprises Excellent New Technology and New Product Award
• Factory certified under Japanese Industrial Standards (JIS A 5540 GB0512001).