The Crown-Nut is a revolutionary solution for the creation of threaded seats at the head of round and square section tubes. This system solves any anchoring issues for machining processes on the tubes and guarantees superior hold.
The product offers solutions for round and square tubes and is available in a wide range of sizes.
Avoid heat and galvanic processes or other heat-based systems after the Crown-Nut has been inserted, as they could be detrimental for the product specifications. Not suitable for applications on stainless steel pipes. We recommend inserting a blocking counter-nut on the stud to be fitted for the ‘insert with flange’ series.
Railway-News magazine Issue 3, September 2022: Specialinsert srl - Fasteners for the Railway Industry.
Data sheets for Specialinsert's inserts for composite materials, including: laminates, full parts, and sandwich panels.
The Ensat® bush is installed into materials with low resistance requiring threaded seats with high specifications of resistance and wear.
Specialinsert compares their different types of MASTER-PLATE® in order to help you identify the fastener system that best suits your needs.
DEFORM-NUT® can be applied to parts with no access to the inside (for example tubes, sheet metal, box structures, composite materials etc.).
Specialinsert explains the advantages and characteristics of stainless steel fasteners, discussing their wide range of applications.
Specialinsert srl describes how their reliable and durable fastening systems prevent the loosening of fasteners in critical sectors.
Despite their reduced size, the importance for the environmental impact, strength, and durability of a fastener is critical.
Invisible fastening solutions by specialinsert are an ideal choice for projects where the final aesthetic outcome is crucial.
London’s Putney Bridge has shone again thanks to Specialinsert®'s KEEP-NUT® inserts and Armadillo Lighting's LED floodlights.
Fastening systems for plastic possess particular characteristics which must be considered during the design phase.
Use the form opposite to get in touch with Specialinsert srl directly to discuss any requirements you might have.