The Master Lock No. 6840 ProSeries® Solid Body Padlock delivers exceptional performance and durability, making it ideal for demanding commercial and industrial applications. Crafted with a 1-3/4″ (44mm) wide solid brass body, this padlock resists corrosion and performs reliably in caustic and corrosive environments.

Its 1-3/16″ (30mm) tall, 5/16″ (8mm) diameter hardened boron alloy shackle offers outstanding cut resistance, while the dual ball locking mechanism resists pulling and prying for enhanced security. Equipped with a high-security, rekeyable 5-pin cylinder featuring spool pins, the lock is virtually pick-proof.