Products Detail

Coil Nuts are special hexagonal fastening nuts uniquely designed for concrete forming construction and North American standard engineering projects, including standard hex coil nuts and heavy hex coil nuts. In terms of overall appearance and dimensional specifications, coil nuts share highly consistent outer shapes with conventional standard hex nuts and heavy hex nuts. The core difference lies in their exclusive coil thread structure and performance grades. Featuring wider thread spacing and fewer thread teeth compared with ordinary nuts, the special coil thread profile delivers outstanding fitting compatibility and targeted fastening performance, perfectly matched with supporting hex coil bolts to form a complete and stable fastening assembly system.
Different from general industrial nuts, coil nuts adopt a professional assembly-based thread inspection standard. Instead of traditional Go and No-Go gauges, their thread accuracy is verified by matching assembled hex coil bolts with the same finish, which is a universally recognized and mature testing method among global customers. In accordance with product grade characteristics and industry application standards, coil nuts do not require heat treatment during production, maintaining stable structural performance suitable for concrete forming working conditions. With simple installation, excellent assembly compatibility and strong practicability, these nuts are specially and widely applied in concrete forming construction projects, and are highly popular in North American markets including the United States and Canada.

Manufacturer Advantages:
We are a professional fastener manufacturer specializing in the custom and mass production of high-quality coil nuts, covering full product series of standard hex coil nuts and heavy hex coil nuts. Our product portfolio includes Grade 2, 5, 8 strength grades, adopting premium carbon steel and alloy steel as raw materials, with a complete imperial size range of 1/2”- 1.1/2” to fully meet diverse engineering matching demands.
We have mature and targeted production technology for special coil thread processing, strictly controlling thread spacing, tooth profile uniformity and overall dimensional accuracy to ensure perfect compatibility with coil bolts. Adhering to the business philosophy of "quality is the life of the enterprise", we implement strict full-process quality management from raw material screening, precision thread tapping to finished product inspection. With standardized production procedures, stable batch quality, competitive pricing and comprehensive after-sales service, our coil nuts have gained long-term recognition and trust from global customers, especially in the US and Canadian construction markets. We sincerely look forward to establishing stable, win-win and long-term cooperative relationships with worldwide clients.

Surface Finishing:
Black Oxide, Hot-Dip Galvanizing, etc.