731 / 741 Series features a e-coated hardened steel lock body with molybdenum shackle to resist drilling, sawing, twisting and brute force attacks. The rectangular design limits the spacing and blocks the access to blot cutter wehn the lock is in place. The anti-drill sliding cover plate provides high standard drilling resistance in cooperation with slide-in slot and anti-drill plate.

Both single and double slot options are available and can be used in accordance with chains or hasps. 

DS refers to double slots for going with the chain. To prevent the heavy lock from dropping off, the first slot will be opened when unlocking. By twisting and pulling the shackle the second slot can be opened.

Application:

This lock is ideal for security warehouse, factory gates, lorries etc.