Coil Nuts

Features of Coil Nuts

• Higher Quality Coil Nuts:

  CN1 Standard Coil Nuts

  
  

  The CN1 Standard Coil Nut is designed for use with Coil Bolts and Coil Rods in conventional concrete wall formwork, column formwork, and general load applications. Its hexagonal body provides convenient wrench engagement, while the coarse coil thread enables fast installation and easy removal. The design is well suited for construction projects requiring frequent formwork assembly and reuse.

  
  

  CN1 Technical Features

  
  

  The CN1 features a coarse coil thread with a large thread profile that helps minimize the accumulation of dust and debris. During installation, concrete residue can be pushed out through the thread profile, providing a self-cleaning effect and helping maintain reliable thread engagement during repeated installation and removal.

  
  

  The nut is machined from a hexagonal steel billet, providing a consistent external profile and clearly defined wrench flats. When paired with compatible Coil Bolts or Coil Rods, it provides smooth thread engagement and convenient tightening.

  
  

  The standard CN1 is suitable for conventional medium-duty working loads. Where higher load capacity is required, the CN2 Heavy Duty Coil Nut can be selected. Depending on the engineering design and applicable industry practice, two standard coil nuts may also be used at the same connection point to distribute the load.

  
  

  Before ordering, confirm that the thread specification matches the Coil Bolt or Coil Rod. Surface protection and corrosion resistance requirements should also be selected according to the construction environment and project specifications.

  
  

  CN2 Heavy Duty Coil Nuts

  
  

  The CN2 Heavy Duty Coil Nut is a heavy-duty, extended-height coil nut designed for applications requiring higher load performance. Its taller body provides longer thread engagement and increased load-bearing capability compared with the standard CN1 design.

  
  

  It is suitable for heavy-duty wall formwork, bridge pier and infrastructure formwork tie systems, foundation formwork and precast component lifting anchoring, where higher load requirements and dependable fastening performance are critical.

  
  

  CN2 Technical Features

  
  

  The primary difference between the CN2 and standard coil nuts is its increased body height and longer thread engagement area. Within the same nominal size range, the extended engagement provides improved load-bearing performance, making the CN2 suitable for demanding formwork tie systems.

  
  

  The CN2 can be used with high-strength Coil Rods and Shear Bolts in heavy-duty formwork applications. When properly engineered and matched with compatible high-strength components, its enhanced thread engagement can help reduce the number of fastening components required while supporting faster formwork assembly and removal.

  
  

  The CN2 retains the self-cleaning coarse coil thread design, helping reduce the risk of thread blockage caused by construction dust, concrete residue and other jobsite contaminants. This makes repeated use more convenient and supports efficient formwork turnover.

  
  

  For proper product selection, evaluate the formwork lateral pressure, concrete pouring height, tie spacing, and required working load. Material grade and surface treatment should also be confirmed to ensure compliance with project specifications and environmental requirements.

  
  

  You can get free samples to check whether they can meet the requirements.

  Get Free Samples
• Coil Nuts With Shorter Lead Time:

  CN1 Standard Coil Nuts

  
  

  Standard Coil Nuts are available in 1/2",3/4",1",1-1/4"and 1-1/2" diameters. To achieve the published safe working loads when using the Standard Coil Nuts on Coil Bolts or Coil Rods,two (2) Standard Coil Nuts tightly locked together are required.
  Below capacities based upon mechanical testing.
  All data is based on a 5:1 SWL for lifting applications. Safety factor can be adjusted to a 3:1 SWL for connections by multiplying the published loads by 5,then dividing by 3.

  Coil Nuts also available in electroplated. Add a "P" at the end of the Part Number to designate electroplated finish.
  Coil thread manufactured per specification.

  
  

  CN2 Heavy Duty Coil Nut

  
  

  Heavy Duty Coil Nuts are available in 1/2",3/4",1",1-1/4"and 1-1/2" diameters.

  All data is based on a 5:1 SWL for lifting applications. Safety factor can be adjusted to a 3:1 SWL for connections by multiplying the published loads by 5,then dividing by 3.

  Below capacities based upon mechanical testing.

  
  

  Coil Nuts also availablein electroplated.Add a"P"at the end of the PartNumber to designateelectroplated finish.Coil thread manufacturedper specification.

  
  

  You can get a solution with shorter order delivery times and guaranteed quality and quantity.

  Get Your Free Solution
• Coil Nuts with Better Service:

  Sample Before Bulk Order

  
  

  Free samples are available to help customers verify specifications, material and surface finish before placing a bulk order, reducing procurement risks and improving product selection confidence.

  
  

  Professional Product Selection

  
  

  Our engineers can recommend suitable Coil Nuts according to the formwork system, loading conditions and project requirements, while helping match Coil Bolts, Coil Rods, Shear Bolts and other compatible components.

  
  

  Full-Process Quality Control

  
  

  Every production stage is subject to quality inspection, from raw material procurement to finished products. Inspection records can be provided according to order requirements, while dimensions, materials and surface treatments can be customized based on drawings or specifications.

  
  

  Stable Production & On-Time Delivery

  
  

  Bulk orders are scheduled through coordinated production planning to support reliable delivery. Export packaging, shipping marks and other packaging requirements can be customized according to customer specifications, helping minimize project delays caused by material shortages.

  
  

  You can benefit from the comprehensive services of a dedicated client team.

  Contact Your Dedicated Service Team
• Cost-controllable Coil Nuts:

  Why Choose Our Coil Nuts?

  
  

  Faster Installation & More Efficient Formwork Turnover

  
  

  The coarse self-cleaning coil thread allows fast engagement and removal while helping prevent concrete residue from obstructing the threads. This improves formwork assembly, dismantling and turnover efficiency on the jobsite.

  
  

  Reusable Design & Lower Cost per Use

  
  

  The self-cleaning thread design helps minimize concrete residue accumulation and maintains reliable thread engagement through repeated use. Reusability helps distribute the initial purchase cost across multiple applications and reduce the cost per use.

  
  

  Standard & Heavy-Duty Options for Flexible Selection

  
  

  The CN1 is designed for conventional applications, while the CN2 is intended for higher-load requirements. Both options can be sourced through the same supply system, allowing customers to optimize component selection and reduce inventory and supplier-switching risks.

  
  

  You can leave a request and get a more suitable quotation.

  Get a Better Quotation