
Jinjiang Tagong Hardware Forging Manufacturer Co. LTD
Pioneering the fastener industry with unwavering dedication since 1985, for a remarkable span of over 39 years.
Standard (GB / DIN / ISO / UNI / JIS / GOST / ANSI / ASTM ); And Tailor-made Non-standard crafted meticulously according to your unique designs.


No Spring Thickened Nut is a reinforced fastener designed for T-slot, dovetail slot or rail system, suitable for scenarios requiring high load or long-term stable fixation. Unlike spring slot nuts, it has no built-in spring and is usually thickened to enhance strength and durability. The following is a detailed introduction:
1. Structure and Features
No Spring Mechanism: Relying on pure mechanical locking, it is necessary to use tools (such as wrenches) to fully tighten the bolts to fix.
Thickened Design: Thicker than standard nuts, providing higher tensile strength and vibration resistance.
Anti-loosening performance: Some models have nylon inserts (self-locking nuts) or serrations to prevent loosening.
Various materials: carbon steel, stainless steel (such as 304/316), alloy steel, etc., to adapt to different environments.
2. Common Types
Standard Thickened Nut: Universal type, suitable for most T-slots.
Self-locking Thickened Nut: Built-in nylon ring or metal deformation structure, better anti-loosening effect.
Flange thickened nut: with flange at the bottom, increasing the contact surface and dispersing the pressure.
High-strength nut: after heat treatment (such as grade 8.8, grade 10.9), it is used for heavy-duty equipment.
3. Application scenarios
Heavy machinery: high-stress fixation of machine tool bases, stamping equipment, etc.
Long-term fixed structures: such as conveyor line brackets, steel structure connections.
Vibration environment: occasions where anti-loosening is required in vehicles and ship equipment.
High temperature/corrosive environment: stainless steel is used in chemical and food machinery.
Discover an array of customizable materials and exquisite finishes, perfectly crafted to meet your every specification:
Mechnical Property |
Material |
Surface Treatment |
Class 4 / 6 / 8/ 10 /12 |
C45
40Cr
35CrMo
42CrMo
304
316
35K...... |
♦Yellow Zinc
♦Zinc Plated
♦Black Oxide
♦Phosphate
♦Dacromet
♦Geomet |
Packing method: Efficiently packed in 25kg/carton, 1.5 to 2.5 tons/pallet, or tailored to your specific requirements.
For further details and inquiries, our team is ready to assist you with personalized support, ensuring your complete satisfaction.
P.S.: Ensure to contact us for an updated quote on prices before placing your order, given the current material price volatility.




WHOWE ARE
With over39 years of unmatched expertise, Tagong is recognized globally as a symbol of excellence in manufacturing both standard and bespoke fasteners. Our cutting-edge production capabilities yield an impressive 30,000 tons annually, with sales soaring past 200 million.
Our expansive 60,000-square-meter facility is home to 35 state-of-the-art hot-forging machines and 300 precision machining units, staffed by a team of approximately 200 dedicated professionals.
Through relentless innovation and tenacity spanning more than 30 years, we have sculpted a sophisticated production system. It seamlessly integrates advanced production and inspection technology, including CNC systems, mesh belt furnace lines, and fully automated forging equipment.
Driven by an unwavering commitment to excellence, we have evolved into a global supplier. Our dedication to quality is validated by the ISO9001 certification and SGS testing. Our premium products are celebrated across Europe, North America, and South Asia, earning the trust of customers worldwide.
Development History
Production Workshop
1. Q: What about MOQ?
A: It depends on the size of the products.
2. Q: What are your advantageous products?
A: All kinds of standard and customized fasteners.
3. Q: How many staff are in your company?
A: About 200 staff in our factory.
4,Q: What about your annual production capacity?
A :About 30000 tons per year.
5,Q :Do you have an ISO 9001 certificate?
A: Yes, we do.
6, Q: Can you provide the CBAM report?
A: Yes, of course