Era Window Staylock - Satin Effect (2 Pieces For Sale Window Stay Lock With Armor-Coat | Window Lock Window Lock Keys Replaces existing non-locking Stay Pins The ERA Staylock is suitable for most stays, fits most wooden casement windows and is fitted with a tamper resistant spring loaded locking system... Threaded stay pins secure windows stays in place Adjustable Window Hardware Window Friction Stay - Hardware and Friction Key required to lock and unlock Tamper resistant locking nut ERA Sash Window Stop The existing arm retaining/locating pin is replaced with a threaded version. ERA Locks are approved by Insurance companies. The window is locked by screwing down the body of the lock onto the threaded pin, this effectivley prevents the stay arm from being operated which in turns keep the window locked.
