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AMERICAN LOCK A12MK SOLID ALUMINUM BODY NON-REKEYABLE PADLOCK OVERVIEW
A12MK Solid Aluminum Body Non-Rekeyable Padlock. Non-Rekeyable Padlocks - Solid Aluminum.
The American Lock No. A12MK Solid Body Padlock features a 1-3/4in (44mm) wide solid aluminum body and a 3in (75mm) tall, 5/16in (8mm) diameter zinc plated boron shackle for superior cut resistance. Ideal for corrosive environments Ideal for corrosive environments, the non-rekeyable 5-pin APTC12 cylinder can be factory keyed to your requirements.
Buy the American Lock A12MK Solid Aluminum Body Non-Rekeyable Padlock for easy installation and dependable door hardware solution.
AMERICAN LOCK A12MK SOLID ALUMINUM BODY NON-REKEYABLE PADLOCK PRODUCT FEATURES
- 1-3/4in (44mm) wide solid aluminum body offers strong protection against the elements
- 3in (76mm) tall, 5/16in (8mm) diameter hardened boron alloy steel shackle for superior cut resistance
- Chrome plated shackle for extra corrosion resistance
- Non-rekeyable 5-pin APTC12 cylinder prevents picking
- Self-Storage Units & Lockers
- Edge® Key Control
- Keying Options
- Laser Engraving & Custom Marking
- Shackle Options
AMERICAN LOCK NON-REKEYABLE PADLOCKS - SOLID ALUMINUM COLLECTION
American Lock A10 (A10KD) Solid Aluminum Body Non-Rekeyable Padlock, Keyed Different
American Lock A10KA Solid Aluminum Body Non-Rekeyable Padlock, Keyed Alike
American Lock A10MK Solid Aluminum Body Non-Rekeyable Padlock, Keyed Different (Master Keyed)
American Lock A10KAMK Solid Aluminum Body Non-Rekeyable Padlock, Keyed Alike (Master Keyed)
American Lock A11 (A11KD) Solid Aluminum Body Non-Rekeyable Padlock, Keyed Different
American Lock A11KA Solid Aluminum Body Non-Rekeyable Padlock, Keyed Alike
American Lock A11MK Solid Aluminum Body Non-Rekeyable Padlock, Keyed Different (Master Keyed)
American Lock A11KAMK Solid Aluminum Body Non-Rekeyable Padlock, Keyed Alike (Master Keyed)
American Lock A12 (A12KD) Solid Aluminum Body Non-Rekeyable Padlock, Keyed Different
American Lock A12KA Solid Aluminum Body Non-Rekeyable Padlock, Keyed Alike
American Lock A12MK Solid Aluminum Body Non-Rekeyable Padlock, Keyed Different (Master Keyed)
American Lock A12KAMK Solid Aluminum Body Non-Rekeyable Padlock, Keyed Alike (Master Keyed)
RESOURCES & DOWNLOADS
American Lock A12MK Solid Aluminum Body Non-Rekeyable Padlock Catalog
Manufacturer Resources
Product Specs
- Subcategory:
- Solid Body Padlocks
- Shelf Pack Qty:
- 6
- Master Carton Qty:
- 24
- Shackle Width:
- 3/4"
- Shackle Diameter:
- 5/16"
- Keyed:
- Yes
- Product Group:
- Other / Miscellaneous Hardware
- Product Subgroup:
- Padlocks
- Product Type:
- Padlocks
- Commercial/Residential:
- Commercial
- Product Model:
- A12MK
- Product Color:
- Grey
- Product Shackle Length:
- 3"
- Product Style:
- Non-Rekeyable Padlocks
- Product Category:
- Other / Miscellaneous Hardware
- Product Substrate:
- Aluminum
- Product Width:
- 1-3/4"
- Department:
- Door Hardware
American Lock AME-A12MK 2KEY – Frequently Asked Questions
1) Will the American Lock A12MK padlock fit a hasp with a 3/4 inch opening?
The A12MK clears a 3/4 inch shackle width (the inside horizontal gap between the shackle legs), with a 5/16 inch diameter shackle and 3 inches of shackle length. So the hasp staple has to pass through that 3/4 inch clearance and the staple hole must accept a 5/16 inch shackle. The body itself is 1-3/4 inches wide, which is what to check against a recessed or shrouded hasp pocket.
2) Can a locksmith rekey the American Lock A12MK on site?
No. The A12MK uses a non-rekeyable 5-pin APTC12 cylinder, so it cannot be repinned in the shop or in the field. The keying is set at the factory, which means you specify the cut when you order rather than adjusting it later. If you need a padlock you can rekey or rotate cores on, look at a removable core padlock such as the Sargent 60-858-2 instead.
3) What does the MK in American Lock A12MK actually mean for my keying system?
MK means master keyed: each A12MK is keyed different, so every lock has its own change key, but all of them operate under a master key. That is the setup for self storage, lockers, and multi-tenant sites where a manager needs one key for everything and each tenant only opens their own unit. If you want every lock to take the same change key under a master instead, that is the A12KAMK; straight keyed different with no master is the A12 (A12KD).
4) Can I use the American Lock A12MK as a lockout/tagout safety padlock?
The A12MK is a commercial solid aluminum body padlock with a non-rekeyable 5-pin cylinder, sold master keyed - meaning a master key opens it, which is the opposite of what lockout/tagout practice calls for. For safety lockout use, the ABUS 72 Series 72/30 is an anodized aluminum safety padlock with a 1-1/4 inch body width and 3/16 inch shackle diameter, and the ABUS 74 Series 74/40 is an insulated safety padlock with a 6-pin cylinder, 1/4 inch shackle diameter and 1-1/2 inch body width.
5) What padlock has the same 5/16 inch shackle diameter as the American Lock A12MK but uses a rekeyable cylinder?
The American Lock A12MK carries a 5/16 inch shackle diameter with a non-rekeyable cylinder. If you need the same 5/16 inch shackle diameter in a lock built around a replaceable cylinder, the Schlage KS23D/KS23F brass padlock also uses a 5/16 inch diameter shackle, and the Medeco 54515G XT electronic indoor/outdoor padlock is listed with a 5/16 inch shackle diameter and supplied with a cylinder. The A12MK body is solid aluminum, while the KS23D/KS23F body is brass.
6) I need a padlock for a wet, corrosive outdoor location - what are my options besides the American Lock A12MK?
The A12MK uses a solid aluminum body, which is why it is specified for corrosive environments. If you would rather have stainless steel or a sealed design at the same opening, the Medeco 521 G8R is a weather-tight padlock with a solid stainless steel body, supplied less the pop-out cylinder, and the ABUS T84MB/30 Nautic uses a black sleeve over the body with a 13/64 inch shackle diameter. The A12MK's shackle is 5/16 inch diameter, heavier than either the T84MB/30 at 13/64 inch or the ABUS 72/30 at 3/16 inch.
7) What should I order instead of the American Lock A12MK if my facility uses interchangeable cores?
The A12MK cylinder is non-rekeyable and keyed at the factory, so it cannot be brought onto an existing core-based master key system in the field. For that, the Sargent 60-858-2 is a removable core padlock with a 2 inch stainless steel shackle, and the Medeco 521 G8R is supplied less its pop-out cylinder so you install the core your system uses. Note the A12MK shackle is 3 inches tall, taller than the 2 inch shackle on the Sargent 60-858-2.
8) Is an aluminum body padlock good enough for outdoor or washdown use?
The A12MK is built for corrosive environments. The body is solid aluminum, which does not rust like a plated steel case, and the boron alloy steel shackle is plated for corrosion resistance on top of its cut resistance. Coastal sites, wash bays, and chemical storage are the typical use. For a fully stainless or weather-sealed option, the Medeco 521 G8R is a weather-tight padlock with a solid stainless steel body.
9) How many keys come with each American Lock A12MK, and can I order it without keys?
Key count is something you pick. The A12MK is offered with 0, 1, 2 (standard), 3, or 4 keys per lock. Zero keys is the usual choice for a facility that already holds a key bank and only wants the locks; three or four per lock suits a crew or a shared piece of equipment where several people need access.
10) Can I get the A12MK padlock with a chain so it stays attached to the gate?
Yes. Each A12MK can be ordered with a #40 sash chain, 9 inches long, zinc plated, or with no chain at all. The chain keeps the lock tethered to the door, gate, or locker so it does not walk off or get set down and lost, which is why storage and utility crews spec it.
11) How does the American Lock A12MK compare to the A10 and A11 aluminum padlocks?
All three are solid aluminum non-rekeyable padlocks from the same family; the difference is shackle length. The A12 runs a 3 inch tall shackle, which is the long one for thick hasps, chain links, or gate work. The A10 and A11 are the shorter-shackle versions of the same body. Within each number, the suffix sets the keying: KD keyed different, KA keyed alike, MK keyed different under a master, KAMK keyed alike under a master.
12) Does the key stay captive in the American Lock A12MK when it is open, and which padlocks are key retaining?
The A12MK is a solid aluminum body padlock keyed different under a master key, ordered with 0 to 4 keys per lock. Among comparable commercial padlocks, the Sargent 758 is specifically a key retaining standard padlock in US4 satin brass, while the Sargent 858 and the Sargent 82-856 KESO padlock are non-key retaining, as is the Medeco 54515G XT.
13) Is the ABUS 76/40 an equivalent to the American Lock A12MK for self-storage lockers?
They are not the same construction. The A12MK is a solid aluminum body padlock 1-3/4 inches wide with a 5/16 inch shackle and a non-rekeyable 5-pin APTC12 cylinder, called out for self-storage units and lockers. The ABUS 76/40 of the 76 Series is a plastic-covered aluminum core padlock roughly 1-37/64 inches wide with a 1/4 inch shackle diameter, so the body is sleeved rather than bare solid aluminum and the shackle is lighter.
14) How does the A12MK ship for a bulk self-storage or facility order?
Bulk buyers get 6 locks to a shelf pack and 24 to a master carton, which makes it straightforward to break out a facility rollout by building or floor. The grey aluminum finish is consistent across the line, so locks added later match what is already hanging on the doors.
15) What is the difference between ordering the American Lock A12MK with a chain versus using a separate padlock and chain?
The A12MK can be ordered with a #40 sash chain, 9 inches long, zinc plated, factory attached, or with no chain at all, in either case with 0 to 4 keys per lock. None of the comparable commercial padlocks - the Sargent 758 and 858, Medeco 5260, or Schlage KS23D/KS23F - is listed with an integral chain, so with those you would source chain separately.
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Does the American Lock AME-A12MK 2KEY come with a warranty?
Absolutely. The American Lock AME-A12MK 2KEY is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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