Master Lock 175 Resettable Combination Brass Padlock, Set-your-own 4-Digit Combination

The 175 brass combination padlock has a 5/16 inch (8mm) diameter shackle with a 1 inch (25mm) shackle width, which is the clear horizontal span between the shackle legs. So the hasp staple has to accept a 5/16 inch shackle, and anything you lock through needs to sit within that 1 inch inside width. Shackle length comes in two choices, 1 inch or 2-1/4 inch, so pick the longer one if you are reaching through a thick hasp, a chain link, or a gate latch.

Only the vertical clearance changes. Both use the same 2 inch (51mm) solid brass body and the same 5/16 inch hardened steel shackle. The 1 inch shackle is the tighter, harder-to-pry option for a standard hasp or locker. The 2-1/4 inch long shackle is what you want for gate latches, chain, cable, or any hasp where a short shackle will not reach through.

It is a combination padlock with a set-your-own 4-digit dial code, and you set it yourself to any of 10,000 combinations. There is no key to carry and no key to lose, which is why property managers hand these to tenants and crews. If your site policy requires a master-keyed override for emergency access, this is the wrong lock and you need a keyed padlock instead.

Yes, that is the point of the 175. The 4-digit combination is resettable to any of 10,000 codes, so when someone leaves you change the number instead of replacing the lock or rekeying. For a landlord turning units or a contractor rotating crews on a jobsite gang box, that means one lock stays in service across many users.

The case is solid brass, which Master Lock calls out for strength and weatherability, so outdoor use on a shed, gate, or storage bin is within what the lock is built for. The shackle is hardened steel for cut resistance. Take the 2-1/4 inch shackle version for most gate latches.

Master Lock classifies the 175 as a residential-grade padlock. It suits lockers, sheds, tool bins, storage cages, and gates. For high-security commercial openings, a shrouded or boron shackle padlock is the better call, but for general MRO and property use where you want no keys in circulation, the 175 covers it.

The body measures 2 inches (51mm) wide. That is a full-size padlock body, so check that your locker or cabinet hasp has 2 inches of clear space beside the staple before you commit to a fleet of them. On standard school and gym lockers and on typical shed hasps, 2 inches clears fine.

Yes. Because each 175 is set by the user to any 4-digit code, you can put every lock in a building on one shared combination, which is how facilities standardize storage rooms, roof hatch chains, and equipment cages without running a key system. Group them by area with different codes if you need to limit who gets into what.