RS PRO, Plain Stainless Steel Locknut, DIN 985

From the trusted RS PRO brand, these lock nuts contain a nylon insert for safe and secure fastening. They are designed to remain secure despite conditions of severe vibration. The nut is made from A4 stainless steel with a bright zinc plating, for durability and environmental resistance over a long period of use. As it is A4 graded, it is even suitable for use in challenging environments.

• 767-804 is an M3 A4 stainless steel self-locking nut;• 767-810 is an M4 A4 stainless steel self-locking nut;• 767-826 is an M5 A4 stainless steel self-locking nut;• 767-848 is an M8 A4 stainless steel self-locking nut;• 767-854 is an M10 A4 stainless steel self-locking nut;• 248-4539 is an M12 A4 stainless steel self-locking nut;• 797-6377 is an M16 A4 stainless steel self-locking nut;• 797-6386 is an M20 A4 stainless steel self-locking nut

• Locking nuts for heavy-duty applications;• Glass-filled nylon inserts. ;• To DIN985;• A4 grade 18/8 stainless steel (Type 316 S16)

Unlike conventional fasteners, lock nuts, sometimes known as self-locking nuts, contain a plastic insert that deforms to the thread of the fastener and prevents loosening without the aid lock threading adhesive. As such, they are often used where security in fastening is required. They are useful when joining soft materials such as wood and plastics where high surface pressure might damage the material, or when there is a short clamp load. However, their principal advantage is in applications where there is a high degree of vibration. Locking nuts resist loosening over time in dynamic load conditions. As such they are often used in;

While a locking nut can be removed in much the same way a conventional nut can, their nylon inserts deform and degrade with each use. Therefore it is not recommended that self-locking nuts be re-used if it can be avoided, as their primary characteristic- the ability to dampen vibration and stress from dynamic loads- lessens in efficacy with each use.

Locknuts can be applied in much the same way as conventional nuts. It is recommended to finger tighten as much as possible, and then tighten with an appropriate tool until the required torque is reached.

RS PRO aims to be your go-to brand for reliability and value for money. We source great parts at great prices and test everything with our in-house experts to ensure the quality you need.