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AMERICAN LOCK A20 (A20KD) BRASS BODY REKEYABLE PADLOCK (HIDDEN SHACKLE) OVERVIEW
A20 (A20KD) Brass Body Rekeyable Padlock (Hidden Shackle). Non-Rekeyable Padlocks - Solid Brass.
The American Lock No. A20 (A20KD) Solid Body Padlock features a 1-3/4in (44mm) wide solid brass body to resist corrosion and a 1-1/8in (29mm) tall, 5/16in (8mm) diameter hardened boron alloy shackle for superior cut resistance. Ideal for harsh environments, a dual ball bearing mechanism resists pulling and prying while a 5-pin APTC12 non-rekeyable cylinder with serrated pins is virtually impossible to pick.
Buy the American Lock A20 (A20KD) Brass Body Rekeyable Padlock (Hidden Shackle) for easy installation and dependable door hardware solution.
AMERICAN LOCK A20 (A20KD) BRASS BODY REKEYABLE PADLOCK (HIDDEN SHACKLE) PRODUCT FEATURES
- 1-3/4in (44mm) wide solid brass body
- Brass body provides extra corrosion resistance in caustic, corrosive, salty environments
- 1-1/8in (28mm) tall, 5/16in (8mm) diameter hardened boron alloy steel shackle for superior cut resistance
- Dual stainless steel ball bearing locking mechanism that resists pulling and prying
- Non-rekeyable 5-pin APCT12 cylinder prevents picking
- Marine & Offshore Security
- Self-Storage Units & Lockers
- Marine Environments
- Sheds, Workshops & Garages
- Keying Options
- Laser Engraving & Custom Marking
- Shackle Options
AMERICAN LOCK NON-REKEYABLE PADLOCKS - SOLID BRASS COLLECTION
American Lock A20 (A20KD) Brass Body Rekeyable Padlock (Hidden Shackle), Keyed Different
American Lock A20KA Brass Body Rekeyable Padlock (Hidden Shackle), Keyed Alike
American Lock A20MK Brass Body Rekeyable Padlock (Hidden Shackle), Keyed Different (Master Keyed)
American Lock A20KAMK Brass Body Rekeyable Padlock (Hidden Shackle), Keyed Alike (Master Keyed)
American Lock A21 (A21KD) Brass Body Rekeyable Padlock (Hidden Shackle), Keyed Different
American Lock A21KA Brass Body Rekeyable Padlock (Hidden Shackle), Keyed Alike
American Lock A21MK Brass Body Rekeyable Padlock (Hidden Shackle), Keyed Different (Master Keyed)
American Lock A21KAMK Brass Body Rekeyable Padlock (Hidden Shackle), Keyed Alike (Master Keyed)
American Lock A22 (A22KD) Brass Body Rekeyable Padlock (Hidden Shackle), Keyed Different
American Lock A22KA Brass Body Rekeyable Padlock (Hidden Shackle), Keyed Alike
American Lock A22MK Brass Body Rekeyable Padlock (Hidden Shackle), Keyed Different (Master Keyed)
American Lock A22KAMK Brass Body Rekeyable Padlock (Hidden Shackle), Keyed Alike (Master Keyed)
RESOURCES & DOWNLOADS
American Lock A20 (A20KD) Brass Body Rekeyable Padlock (Hidden Shackle) 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:
- A20
- Product Color:
- Gold
- Product Shackle Length:
- 1-1/8"
- Product Style:
- Non-Rekeyable Padlocks
- Product Category:
- Other / Miscellaneous Hardware
- Product Substrate:
- Brass
- Product Width:
- 1-3/4"
- Department:
- Door Hardware
American Lock AME-A20KD 2KEY – Frequently Asked Questions
1) Will the American Lock A20 padlock fit a standard hasp, and how much shackle clearance do I get?
The A20 gives you a 1-1/8 inch shackle clearance height with a 3/4 inch shackle width (the gap between the legs), on a 5/16 inch diameter shackle. That is a short, tight shackle by design, so measure the staple on your hasp: anything thicker than 5/16 inch or wider than 3/4 inch will not pass through. It works with a close-fitting hasp where you want almost no room left for a bolt cutter or pry bar.
2) Is the A20 padlock actually rekeyable?
No. Despite the way the name reads, the A20 uses a non-rekeyable 5-pin APTC12 cylinder with serrated pins. If you need a padlock a locksmith can rekey into an existing system later, this is the wrong lock. Buy it when you want a fixed key that nobody can re-pin in the field.
3) Which padlock holds up outdoors in salt air or a wash-down area?
The A20's body is solid brass, 1-3/4 inches wide, which is what makes it a marine and offshore pick: brass will not rust the way a plated steel body does in caustic, corrosive, or salty conditions. The shackle is hardened boron alloy steel. Use it on dock boxes, shoreside sheds, and equipment that gets sprayed down.
4) What is the difference between keyed different, keyed alike, and master keyed on the American Lock A20?
Keyed different (the A20KD) means every lock ships on its own unique key, so no key opens a second lock. If you want one key to open a run of locks, the A20KA is keyed alike. The A20MK is keyed different but master keyed, and the A20KAMK is keyed alike and master keyed. A property manager handing out individual keys to storage units wants keyed different; a crew that needs one key for a whole yard wants keyed alike. Master keyed adds a supervisor key over the top of either.
5) Is a hidden shackle padlock like the A20 better than a standard shackle padlock for a gate or trailer?
Different jobs. The A20's shackle only clears 1-1/8 inch and sits close to the body, so there is very little exposed steel for bolt cutters to reach, which is the point on high-risk outdoor hardware. The tradeoff is reach: it will not go around a chain link, a thick hasp, or a trailer coupler. For those you need a long shackle padlock, such as the Sargent 60-858-2 with its 2 inch stainless steel shackle. Pick the A20 where the staple is tight and the threat is cutting.
6) Can I standardize the A20 across a facility that already runs interchangeable core hardware?
Not with this one. The A20 has a fixed 5-pin APTC12 cylinder that cannot be rekeyed, so it will not accept your facility's core. If you are keying padlocks into an existing IC system, the Sargent 60-858-2 is a removable core padlock. Where the A20 does fit a fleet is the master keyed variants, A20MK and A20KAMK, which put a supervisor key over a set of locks without touching the cylinders in the field.
7) What is the closest brass-body padlock to the American Lock A20 with the same 5/16 inch shackle diameter?
The Schlage KS23D/KS23F is the nearest match on both counts: it is a brass padlock with a 5/16 inch diameter shackle, the same shackle diameter the American Lock A20 carries. The A20 pairs that shackle with a 1-3/4 inch wide solid brass body and a 1-1/8 inch shackle length, so if you are matching an existing hasp clearance, check the A20 shackle height against the opening before swapping either direction.
8) I need a brass padlock with a heavier shackle than 5/16 inch - what are my options?
The Medeco 5260 in the 52 Series is a brass body padlock with a 7/16 inch shackle diameter, a step up in shackle stock from the 5/16 inch shackle on the American Lock A20. The 5260 is finished in satin chrome and uses M3 key technology, so it is a different keying platform than the A20 five-pin cylinder - plan the keying separately rather than assuming the two will run on one system.
9) The A20 shackle is too short for my hasp - what padlock has a longer shackle?
The American Lock A20 carries a 1-1/8 inch shackle length, which is a short clearance intended to keep the shackle shielded. If the hasp needs more room, the Sargent 60-858-2 uses a 2 inch stainless steel shackle and takes a removable core. The Sargent 82-856 is another long-shackle option, with a 2 inch by 2 inch brass case and a stainless steel shackle. Both move you off the hidden-shackle geometry the A20 is built around, so confirm the shackle will still sit inside your staple.
10) For a marine or dockside application, is the American Lock A20 or a stainless steel padlock the better choice?
Both are built for wet exposure but from different metals. The A20 uses a solid brass body for corrosion resistance in caustic, corrosive and salty environments, with a hardened boron alloy shackle. The Medeco 521 G8R is a weather-tight padlock with a solid stainless steel body, supplied less pop-out cylinder. ABUS offers the T84MB Nautic with a black sleeve over the body, a 13/64 inch shackle diameter and a 1-17/64 inch body width - a much lighter lock than the 1-3/4 inch wide A20. Pick on the shackle stock the application needs and on whether you want to supply your own cylinder.
11) My facility standardizes on interchangeable core - what padlock takes a core instead of the A20 cylinder?
The American Lock A20 uses a five-pin APTC12 cylinder with serrated pins, keyed different. If your facility keys everything to a removable core, the Sargent 60-858-2 is a removable core padlock with a 2 inch stainless steel shackle and will pull into your existing core program. The Medeco 521 G8R ships less pop-out cylinder, which lets you install a cylinder from your own system. Both are the route to take when the padlocks have to key up with the door hardware.
12) How many keys come with each American Lock A20, and can I order it with none?
Key count is something you pick when you order. The A20 is offered at 0, 1, 2, 3, or 4 keys per lock, with 2 keys as the standard configuration. Zero keys is there for shops keying the locks into their own system or ordering replacements against keys they already hold.
13) Can I get an American Lock A20 with a chain attached so the lock does not walk off?
Yes. The A20 can be ordered with a #40 sash chain, 9 inches (229mm) long, zinc plated, or with no chain at all. The chain version is what you want on gate hardware, self-storage doors, and lockers where a loose padlock gets set down and lost. Both chain options are available at every key count from 0 through 4.
14) What other brass body padlocks could I use instead of the American Lock A20?
Two close brass alternatives: the Schlage KS23D/KS23F is a brass padlock with the same 5/16 inch shackle diameter, and the Medeco 5260 is a 52 Series brass body padlock with a heavier 7/16 inch shackle and M3 key technology in satin chrome. The Sargent 758 is a key retaining brass padlock, meaning the key cannot be removed while the lock is open, which some facilities require so locks do not get left hanging unlocked. The A20 differs from all three in that its cylinder cannot be rekeyed.
15) How does the American Lock A20 resist someone prying or yanking the lock open?
The shackle is held by a dual stainless steel ball bearing locking mechanism, which grips on both legs and resists pulling and prying rather than relying on a single latch. Combined with the short 1-1/8 inch shackle clearance, there is little to get a bar behind. That is the security case for putting it on self-storage units, lockers, and shed and garage doors.
16) What is the difference between the American Lock A20, A21 and A22?
They are the same brass body hidden shackle family, sold as three models, and each is available keyed different, keyed alike, master keyed, or keyed alike with master keying. The A20 is the model with the 1-3/4 inch wide body and the 1-1/8 inch shackle clearance. If the A20's clearance is short for your hasp, the A21 and A22 are the adjacent models in the same brass family to size up against.
17) Does the key stay in the American Lock A20 when it is unlocked, and which padlocks behave the other way?
Key retention is the detail that decides whether a padlock suits a checkout or storage program. Among brass-cased padlocks, the Sargent 758 is key retaining with a US4 satin brass finish, meaning the key will not come out while the lock is open. The Sargent 858 is the non-key-retaining counterpart, also US4 satin brass with a stainless steel shackle, and the Sargent 82-856 is likewise non-key retaining. Choose retaining when you need to be sure a lock never gets left hanging open, and non-retaining when one key has to move down a row of locks.
18) Which padlock will not mar a painted or finished surface the way a bare brass body might?
The ABUS 76/40 is a plastic-covered padlock over an aluminum core, with a 1/4 inch shackle diameter and a 1-37/64 inch width, and the ABUS T84MB/30 Nautic carries a black sleeve over the body. Those coverings sit between the lock and whatever it swings against. The American Lock A20 is a bare solid brass body, 1-3/4 inch wide, chosen for corrosion resistance rather than surface protection - it is the heavier body of the three.
19) Is the American Lock A21 or A22 the same lock as the A20?
They are the same brass hidden-shackle family in different sizes and keying arrangements, not the same part. The A20 is the keyed different version with a 1-3/4 inch body and a 1-1/8 inch shackle; A20KA is keyed alike, A20MK is keyed different master keyed, and A20KAMK is keyed alike master keyed. The A21 and A22 run the same four keying arrangements. If you are replacing an existing lock, match both the model number and the keying suffix - ordering A20KD where the site runs A20KA gives you locks that will not open on the site key.
20) How do American Lock A20 padlocks pack if I am buying them for a whole property?
A20 padlocks come 6 to a shelf pack and 24 to a master carton, which is the useful count when you are ordering a lock per unit across a storage facility or a run of gates and want to work out full cartons.
21) Can I get the American Lock A20 stamped or engraved with our own numbering?
Yes, laser engraving and custom marking are offered on the A20, along with keying and shackle options. That matters for an MRO or property team that numbers every lock to a unit, a gate, or a technician, so a found lock traces back to an opening without a key test.
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Does the American Lock AME-A20KD 2KEY come with a warranty?
Absolutely. The American Lock AME-A20KD 2KEY is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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