Nylon Insert Lock Nuts Anti-loosen Din985 Stainless Steel Self-locking Nuts
Manufacturing standard：ISO, GB, JIS, DIN, BS and ANSI standards, or drawings provided by customers.
Materials： iron, carbon steel, alloy steel, copper, stainless steel, plastics, high-temperature alloy, copper alloy, nickel-base alloy, high-strength alloy, corrosion-resistant alloy, etc.
Process： cold heading, punching, turning, milling, wire cutting, etc.
Treatment/Finishing: Brushing、Anodizing、Zinc Plated、Nickel Plated、Sn Plated.
Requirements： No Burrs、Scratches、Dents、Pits
Application： Structural Steel; Metal Building; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine; Automobile: Home Decorating
Packing：bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand
Nylon insert lock nuts, commonly known as pre-torque nuts, are essential in applications that require vibration resistance and long-term fastening security. Manufactured to DIN 985 or ISO 7040 standards, these nuts feature a nylon collar that elastically deforms to clamp the mating thread. This design prevents loosening without damaging the bolt or requiring additional washers.
Made from grade 8 carbon steel or A2/A4 stainless steel with a zinc or galvanized finish, nylon insert lock nuts perform well in both indoor and mild outdoor environments. For high-strength fastening requirements, especially in the automotive, aerospace and heavy machinery sectors, grade 8 zinc-plated lock nuts are often the first choice because they combine strength and cost-effectiveness.
From an engineering perspective, the number of re-uses of nylon inserts is approximately 5-10 times, making these fasteners both reliable and economical. Standard diameters range from M4 to M20 or #10-24 to 3/4″-16, which are widely compatible with bolt sizes commonly used in industrial assemblies.
As a professional nut and bolt manufacturer and supplier, we ensure strict quality control of mechanical properties, thread tolerances, and coating thickness. Our production capabilities can be customized according to ASTM, DIN, and ANSI standards, ensuring that each batch of nylon insert lock nuts meets international performance expectations.
