ABUS 74MLB/40 Plastic-covered Padlock, 1/4" Shackle dia., 1 37/64" Width

The shackle on the 74MLB/40 is 1/4 inch diameter, so it needs a hasp eye or staple opening larger than 1/4 inch to pass through. Horizontal shackle clearance is 3/4 inch, which is the usable opening width between the shackle legs. That clearance is what limits you on wide hasps and thick chain links, so measure the hasp staple width before ordering.

Yes. The 74MLB/40 is ordered either KA (keyed alike, all locks open with the same key) or KD (keyed different, each lock its own key). Property managers running gates, meters and storage across a site usually take KA so one key on the truck opens everything; KD is for tenant-issued locks where each holder should only open their own.

Yes, the 74MLB/40 is rekeyable. It runs a precision 6-pin cylinder, so a locksmith can repin it to a new bitting when keys go missing or when you fold the locks into an existing system rather than replacing the hardware.

No. The 74MLB/40 is key retaining, meaning the key stays captive in the cylinder until the lock is closed and locked again. That is the behavior you want where a lock must never be left hanging open and unsecured, since the user cannot walk off with the key until the shackle is shut. If you need the key free while the lock is open, look at a non-key-retaining padlock such as the Sargent 858.

No. The 74MLB/40 uses a fixed 6-pin cylinder that a locksmith repins; it is not a removable-core padlock. If you standardize on IC cores so you can rotate keying in-house, go to a removable core padlock instead, like the Sargent 60-858-2 with its 2 inch stainless shackle.

The ABUS 74MLB/40 uses a 1/4 inch shackle diameter. If the hasp or chain you are locking needs a heavier shackle, the Schlage KS23D/KS23F brass padlock and the Medeco 54515G both use a 5/16 inch shackle, and the Medeco 5260 brass body padlock steps up to a 7/16 inch shackle. Confirm the hasp opening accepts the larger diameter before switching, since a 7/16 inch shackle will not pass through a hasp drilled for 1/4 inch.

The ABUS 74MLB/40 has a solid brass body with the body and shackle vinyl encased, which is what keeps it from marring painted doors and coated equipment. For a bare brass body instead, the Medeco 5260 is a 52 Series brass body padlock in satin chrome with M3 key technology, and the Schlage KS23D/KS23F is a brass padlock. The Sargent 82-856 uses a 2 inch by 2 inch brass case with a stainless steel shackle. None of those carry the color-coded vinyl jacket, so if you are using the ABUS color options to sort locks by crew or department you would lose that identification.

The ABUS 74MLB/40 is key retaining, meaning the key cannot be withdrawn while the lock is open. For applications where the key must come out with the shackle open, the Sargent 858 is a non-key-retaining padlock with a stainless steel shackle in US4 satin brass, the Sargent 82-856 is non-key retaining with a brass case and stainless shackle, and the Medeco 54515G is a non-key-retaining electronic indoor/outdoor padlock. Sargent's 758 is key retaining like the ABUS if you want to keep that behavior in a different body.

The ABUS 74MLB/40 uses a precision 6-pin cylinder and is rekeyable, so a locksmith can key it to an existing 6-pin ABUS system, and it is offered keyed alike or keyed different. It is not a removable core body. If your facility standardizes on interchangeable core so one keying tech can swap cores across padlocks and door cylinders, the Sargent 60-858-2 is a removable core padlock with a 2 inch stainless steel shackle and is the right direction to go instead.

The ABUS 74MLB/40 runs a precision 6-pin cylinder and is rekeyable, which covers standard commercial keying and keyed-alike sets across a property. If the facility is on a restricted or patented key platform, look instead at the Medeco 5260, a 52 Series brass body padlock built around M3 key technology, or the Sargent 82-856 on the KESO platform. Both of those tie the padlock to the same restricted system as the door cylinders rather than a separate key.

Body width measures 1-37/64 inches, which is roughly a 40mm padlock. That matters when the lock sits in a recessed hasp or a tight cabinet channel, because the vinyl covering adds bulk over the brass body and the lock needs room to hang and swing clear.

The 74MLB/40 has its brass body and steel shackle encased in vinyl. That coating keeps the lock from scratching painted doors, powder-coated gates, vehicle bodies and equipment panels it bangs against, and it gives you a color to code with. If the lock never touches a finished surface and you just want raw corrosion resistance, an uncoated solid brass padlock like the Sargent 758 is the plainer choice.

Nine colors: black, blue, brown, green, orange, purple, red, white and yellow. That is the practical reason to buy this lock over a bare brass one. Crews use the color to separate departments, buildings or lockout groups at a glance, and every color is available both keyed alike and keyed different.

It is rated as a commercial padlock, built on a solid brass body with a steel shackle rather than a die-cast case. The 1/4 inch shackle puts it in light to medium duty territory: gates, lockers, cabinets, meter boxes, tool crib doors. For high-security exterior applications a thicker shackle is the better call, such as the 5/16 inch Schlage KS23D/KS23F brass padlock or the 7/16 inch Medeco 5260.

The ABUS 74MLB/40 is a commercial padlock with a brass body and steel shackle fully encased in vinyl, which shields the metal from weather and from scratching the surface it hangs against. For heavy weather exposure where you want a corrosion-resistant body rather than a coating, the Medeco 521 G8R is a weather-tight padlock with a solid stainless steel body, supplied less pop-out cylinder. The Medeco 54515G is an electronic indoor/outdoor padlock if you also want audit and access control rather than a purely mechanical key.

The ABUS 74MLB/40 gives 3/4 inch horizontal shackle clearance on a 1/4 inch shackle, which suits standard hasps, cabinet latches, and lightweight chain. Where you need more room through the shackle, the Sargent 60-858-2 carries a 2 inch stainless steel shackle, and the Sargent 82-856 pairs a 2 inch by 2 inch brass case with a stainless steel shackle. Measure the hasp staple and the chain link before ordering either.

The vinyl jacket over the brass body and shackle shields the lock from weather contact and keeps it from marring a painted gate frame, and brass itself does not rust. For fully exposed marine or washdown environments where you want a sealed or stainless body, the Medeco G8R 521 weather-tight padlock with a solid stainless steel body is the heavier-duty answer.