Project Construction Overview
For concrete formwork contractors and site crews, reliable formwork fastening determines wall flatness, safety and project acceptance. Low-grade fasteners frequently slip, deform and trigger formwork bulging, resulting in uneven walls, costly rework and schedule delays.
Built to resolve such common site challenges, our Hex coupling nut suits heavy-duty concrete formwork systems. Made of integrally hot-forged 45# carbon steel, it holds tight under sustained lateral pressure and concrete vibration, preventing formwork shifting and delivering consistent smooth wall finishes during pouring.
Feel free to contact us for samples, technical data and project quotations.
Product Specifications
Product Name
Hex Coupling Nut
Material
45# Carbon Steel
Craft
Integral hot forging
Standard Sizes
30×50, 30×100mm
Surface Treatment
Electro-galvanized
Optional Accessory
Anti-rotation stop pin
Poor fasteners cause most formwork failures.
Ordinary cast nuts have weak structures and cannot withstand pouring pressure.
They slip, crack or loosen during vibration, resulting in wall bulging and costly rework.
Unclear size labels also trigger assembly errors and waste manpower.
Our Hex coupling nut solves these site troubles.
With standardized sizes, dense forged body and optional anti-rotation stop pin, it provides steady fastening for high-grade wall formwork.
Optimized for actual construction work, it delivers simpler, safer and faster installation.
Product Strengths for Construction Teams
High Load-Bearing Forged Structure, No Deformation During Pouring
Forged from solid 45# carbon steel, our nuts feature dense internal structure free of cracks or pores. They resist slipping, breaking and deformation under concrete pressure and vibration, lowering risks of formwork bulging and construction safety issues.
Standard Unified Sizing to Avoid Assembly Error
The mark "30" stands for hex width across flats, not rod diameter. Two standard sizes 30×50 and 30×100 fit most shear wall projects, enabling quick, error-free installation and saving on-site measuring time.
Optional Stop Pin for Anti-Loosening & High-Precision Forming
Ordinary nuts loosen from concrete vibration and cause uneven walls. The stop-pin version of the Hex coupling nut locks formwork position reliably. It is ideal for high-rise buildings, municipal projects and works with strict acceptance requirements.
Electro-Galvanized Finish for Harsh Construction Environments
The electro-galvanized coating offers strong rust resistance. Nuts can be stored outdoors long-term without corrosion, maintaining consistent performance in wet, changeable site conditions to avoid acceptance failures.
On-Site Application Scenarios
This long hex coupling nut is widely used in cast-in-place concrete projects, including:
✅ Residential shear walls
✅ Factory external walls
✅ Municipal retaining walls
✅ Bridge auxiliary structures
It can cooperate with washers as a standard fastener or serve as a professional connector for tie rods and steel rebars, meeting diverse on-site construction demands.
Project Construction Value
For construction contractors, stable and qualified fasteners reduce construction risks, lower rework rates and speed up project delivery. Our forged hex coupling nuts solve common site problems such as insufficient pressure resistance, easy loosening, rusting and confusing sizing. We support sample testing before bulk orders and can provide relevant technical information for your project review.
If you need high-quality, project-grade formwork fasteners to improve construction quality and reduce hidden risks, feel free to contact us for technical support and customized project quotations.
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