Master Lock 40TRI Shrouded Stainless Steel Disk Padlock – 2-3/4 in Wide Body (Pack of 3)

Meet the Master Lock 40TRI Shrouded Stainless Steel Disk Padlock, designed for dependable security in both home and work settings. The lock features a broad, 2-3/4 in wide stainless steel body that feels substantial in hand and holds up against rust and wear. The fully shrouded shackle minimizes exposure, which can deter opportunistic tampering, while still delivering easy, reliable access for authorized users. This is a practical choice for lockers, sheds, garages, and trailers where a balance of strength and convenience matters.

Built for strength, built for outdoor use

The 40TRI combines a 3/8 in (10 mm) diameter shackle with a 5/8 in (16 mm) length, crafted from hardened steel for increased resistance to cutting or sawing. A 4-pin cylinder improves resistance to picking, and the dual locking levers add protection against prying and hammering. Together, these design choices create a sturdy, dependable locking solution without sacrificing smooth operation.

• Stainless steel body delivers corrosion resistance for outdoor or damp environments
• Shrouded shackle minimizes exposure to cutting tools
• Hardened steel shackle provides added bite against brute force attempts
• 4-pin cylinder and dual locking levers help deter tampering while keeping operation smooth
• Pack includes three padlocks with two keys; keys open all three locks for simple keying

Practical uses you can count on

Ideal for securing storage units, garages, sheds, and trailers, the 40TRI is designed for environments where reliability and ease of access matter. It’s well suited for securing a tool shed, a bike locker, fence gates, or other daily-use storage areas. The keyed-alike pack simplifies management when you need multiple locks in one setup.

• Indoor and outdoor use suitable for garages, sheds, trailers, and gates
• Keyed-alike pack option simplifies managing multiple locks

Size details and care

Key dimensions to note: 2-3/4 in wide body; 3/8 in diameter shackle; 5/8 in length; overall width around 3/4 in. For best results, measure your door or latch backset and thickness to ensure you choose the right fit.

Quality you can rely on

The Master Lock name is synonymous with trusted security products backed by a Limited Lifetime Warranty. While no lock can guarantee absolute security, the 40TRI’s design emphasizes strength, durability, and ease of use for everyday scenarios.