We stock the full range of industrial nuts in all standard materials, from hex fullnuts (DIN 934) and locknuts (DIN 439B) through to nylon insert nuts, flange nuts, dome nuts, castle nuts and specialist types. All are available in steel, stainless steel A2 and A4, brass and nylon, with sizes from M2 up to M48 depending on type.
What is the difference between a nyloc nut and a locknut?
A nyloc nut (DIN 982/985) has a nylon collar insert that grips the bolt thread to resist loosening from vibration. A locknut (DIN 439B) is simply a thinner version of a standard hex nut, often used in pairs — one tightened against the other — to create a locking effect. Nylocs are generally more effective as a single-nut locking solution.
Which nut type should I use for an exposed or decorative finish?
Dome nuts (DIN 1587) provide a smooth, rounded cap over the bolt end, giving a neat appearance and protecting against injury from exposed threads. They are commonly used in handrails, furniture, and public-facing steelwork. For stainless steel applications, A2 or A4 dome nuts give a corrosion-resistant decorative finish.
What is a serrated flange nut used for?
Serrated flange nuts (DIN 6923) have a built-in washer face with serrations that bite into the mating surface when tightened. This provides resistance to loosening without needing a separate washer. They are widely used in automotive, plant, and general assembly applications where vibration is a factor.
