Hexagon Nylon Locking Nuts, also known as DIN 985 nuts, are a type of fastener commonly used in various applications where vibration resistance and secure fastening are essential.

The nylon insert is usually located within the nut and serves as a locking mechanism. It creates friction against the mating threads, providing resistance to vibration and preventing the nut from loosening unintentionally.

These nuts are particularly useful in applications where there is a risk of vibration that could cause standard nuts to loosen over time. The nylon insert helps maintain a secure connection.

Frank's Fasteners provides Hexagon Nylon Locking Nuts in A2/304 Stainless Steel, A4/316 Stainless Steel and Zinc Plated Steel.

Additional material and finishes can be sourced, don't hesitate to get in touch with us with your enquiry. 



Diameter Pitch Depth of Nut Across Flats
M3 0.5mm 4mm 5.5mm
M4 0.7mm 5mm 7mm
M5 0.8mm 5mm 8mm
M6 1.0mm 6mm 10mm
M7 1.0mm 7.5mm 11mm
M8 1.25mm 8mm 13mm
M10 1.5mm 10mm 17mm
M12 1.75mm 12mm 19mm
M14 2mm 14mm 22mm
M16 2mm 16mm 24mm
M18 2.5mm 18.5mm 27mm
M20 2.5mm 20mm 30mm
M22 2.5mm 22mm 32mm
M24 3.0mm 24mm 36mm
M27` 3.0mm 27mm 41mm
M30 3.5mm 30mm 46mm
M33 3.5mm 33mm 50mm
M36 4mm 36mm 55mm
M39 4mm 39mm 60mm
M42 4.5mm 42mm 65mm
M45 4.5mm 45mm 70mm
M48 5mm 48mm 75mm
M52 5mm 52mm 80mm
M56 5.5mm 56mm 85mm
M60 5.5mm 60mm 90mm
M64 6mm 64mm 95mm

Subscribe to our Newsletter

You'll receive exclusive content, stock updates, and exclusive special offers to newsletter users - directly to your inbox.