Master Lock Padlock KD 2-1/2 In H 4 Pin Boron Alloy

Commercial Padlock for High-Security Needs

This Master Lock padlock is built for commercial environments that demand strong physical security. Its boron alloy shackle resists cutting and sawing, while the four-pin cylinder adds pick resistance. The rectangular steel body measures 1-1/2 inches high by 2 inches wide with a 1-inch thickness. Each lock opens with a unique key, so no two units share the same combination.

Long Shackle Fits Thick Hasps and Chains

The 2-1/2 inch shackle height clears oversized hasps, heavy chains or thick gate hardware that standard shackles cannot reach. A 3/8 inch shackle diameter slides through typical padlock eyes without forcing. Two bumpers inside the body cushion the shackle during impact, reducing wear on the locking mechanism. The lock is not weather resistant, so indoor or sheltered outdoor use is appropriate.

Suited for Controlled-Access Doors and Gates

Buyers who need a rekeyable core or interchangeable cylinder should look elsewhere, as this model is fixed at four pins with a Master K1 keyway. It also lacks weather sealing, making it a poor choice for exposed marine or coastal installations. Facilities that require master-keyed systems across multiple doors will find the keyed-different design incompatible with that workflow.