Master Lock Brass Padlock KD 1-1/2 In H 4 Pin Steel

Brass Padlock with Steel Shackle

This brass-bodied padlock uses a 4-pin cylinder and a hardened steel shackle to secure gates, sheds or storage units. The Master K6000 keyway and laminated finish are designed for outdoor exposure, and the lock is keyed differently so each unit opens only with its own key. Weather resistance is rated yes, and the lock is not rekeyable.

Limits of the 4-Pin Cylinder and Single Bumper

A 4-pin mechanism offers basic pick resistance but can be manipulated with common tools, so it suits low-risk applications rather than high-value assets. The single bumper and non-interchangeable core mean the lock cannot be upgraded to a higher-pin cylinder or master-keyed later. California Proposition 65 warnings note the presence of chemicals linked to cancer and reproductive harm.

Straightforward Installation with One Common Issue

The padlock installs by slipping the 5/16-inch shackle through a hasp or chain link and turning the key; no tools or wiring are required. The most frequent problem is corrosion inside the keyway when the lock is left exposed to salt air or road spray without periodic lubrication. The fixed keying also prevents matching the lock to an existing key set.