Radial pin tumbler type locks

The lock should be positioned in the application, together with any mounting washer, protective collar or spacer, and the body nut screwed on in a clockwise direction, making sure the nut turns freely and is not cross-threaded. The body nut should be tightened until the lock is held securely.

Take care not to over-tighten the tail nut or screw, as excessive tightening may lead to very difficult turning and quite possibility stopping the lock from rotating. For most of the tail nuts and screws that we supply, we recommend these are screwed in a clockwise direction until tight and then turned one tenth of a turn further. Where a low torque wrench is available, a tightening force of between 17.70 Lbs Inch and 26.55 Lbs Inch is recommended. If you are fitting your own tail nut or assembly, a torque tightening force outside this range may be appropriate.

Any locking mechanism assembled to the tail-piece of the lock should move freely and should not impart a force onto the lock. For example, do not use a spring return mechanism, unless you consult with our staff first.

Silicone or Teflon based or aerosol penetrating lubricants may be used sparingly. Do not lubricate the lock with heavy oil, as this will trap any dirt or dust that may enter the lock, causing excessive wear. Add a few drops to the lock, insert the key, push or pull the key in and out 4 or 5 times then turn the key this way the lubricant will work its way down to the lock mechanism.