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AMERICAN LOCK A21KA BRASS BODY REKEYABLE PADLOCK (HIDDEN SHACKLE) OVERVIEW
A21KA Brass Body Rekeyable Padlock (Hidden Shackle). Non-Rekeyable Padlocks - Solid Brass.
The American Lock No. A21KA Solid Body Padlock features a 1-3/4in (44mm) wide solid brass body to resist corrosion and a 2in (51mm) 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 A21KA Brass Body Rekeyable Padlock (Hidden Shackle) for easy installation and dependable door hardware solution.
AMERICAN LOCK A21KA 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
- 2in (51mm) 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 A21KA 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:
- A21KA
- Product Color:
- Gold
- Product Shackle Length:
- 2"
- Product Style:
- Non-Rekeyable Padlocks
- Product Category:
- Other / Miscellaneous Hardware
- Product Substrate:
- Brass
- Product Width:
- 1-3/4"
- Department:
- Door Hardware
American Lock AME-A21KA 2KEY – Frequently Asked Questions
1) Will the American Lock A21KA fit my hasp? What are the shackle dimensions?
The A21KA shackle is 5/16 inch in diameter, 2 inches tall, with a 3/4 inch clearance between the legs. Your hasp staple needs a hole of at least 5/16 inch to pass the shackle, and the material you are locking through has to stack up under 2 inches of vertical clearance with no more than 3/4 inch of horizontal spread. The body itself is 1-3/4 inches wide, so allow that much room alongside the hasp.
2) What does keyed alike mean on the American Lock A21KA, and do I have to give a key code when I order?
Keyed alike means every A21KA on the order opens with the same key, so one key runs a whole row of storage units, gates or equipment cabinets. Ordering does include a key code field, so if you already have A21 locks in service on a code you want to match, enter it and the new locks come cut to that same key. Leave it blank and the locks ship on a code assigned at the factory. If you want each lock on its own key instead, the A21KD version is the keyed different variant, and A21KAMK adds a master key over the top of a keyed alike group.
3) What is the closest brass-body padlock to the American Lock A21KA with the same shackle diameter?
The Schlage KS23D/KS23F brass padlock uses the same 5/16 inch shackle diameter as the American Lock A21KA, which also carries a 5/16 inch shackle on a brass body. Both are brass-bodied padlocks in that shackle size, so a hasp or shrouded staple sized for the A21KA's 5/16 inch shackle will accept the Schlage as well. The difference is in the cylinder platform and keying program, so confirm your key system before mixing the two on one site.
4) I need a padlock with the same 2 inch shackle as the American Lock A21KA but on an interchangeable core system - what should I use?
Look at the Sargent 60-858-2 removable core padlock, which carries a 2 inch stainless steel shackle, the same shackle length as the A21KA's 2 inch shackle. The A21KA uses a non-rekeyable 5-pin APTC12 cylinder, so it is not a candidate for an IC keying program; the Sargent 60-858-2 is built for removable core, which is what you want if your facility rekeys by pulling cores.
5) For a marine or salt-air application, is there an alternative to the American Lock A21KA that is not brass?
Yes. The Medeco 521 G8R weather-tight padlock uses a solid stainless steel body, and the Sargent 858 pairs a stainless steel shackle with its case. The A21KA takes the brass route instead - a 1-3/4 inch wide solid brass body for corrosion resistance in caustic, corrosive and salty environments, with a hardened boron alloy shackle. Brass and stainless are both common coastal choices; the decision usually comes down to whether your key system is already on one platform.
6) We want audit trail on outdoor gate padlocks - is the American Lock A21KA an option?
No, the A21KA is a mechanical padlock with a 5-pin APTC12 cylinder and no electronic function. For a credential-based outdoor lock, the Medeco 54515G XT electronic indoor/outdoor padlock is the one to spec; it is non-key-retaining and uses a 5/16 inch shackle diameter, the same shackle size as the A21KA, so it drops into the same hasp openings.
7) Is a brass padlock like the American Lock A21KA the right choice for salt air and outdoor gates?
Brass is what you pick when corrosion is the problem. The A21KA uses a solid brass body specifically for caustic, corrosive and salty conditions, which is why it gets specified for marine and offshore work, docks, sheds and outdoor storage. The shackle is hardened boron alloy steel for cut resistance, and the locking mechanism uses dual stainless steel ball bearings that resist pulling and prying. If your exposure is chemical or washdown rather than weather, a laminated steel or plated body will pit long before brass does.
8) How many keys come with each American Lock A21KA padlock?
Key count is something you pick at order. The standard is 2 keys per lock, and the A21KA can also be ordered with 1, 3 or 4 keys per lock, or with 0 keys per lock when you are adding locks to an existing keyed alike group and already hold the keys. On a large keyed alike order the 0-key option keeps you from paying for and then having to control dozens of duplicate keys.
9) How do the A20, A21 and A22 American Lock brass padlocks differ?
They are the same solid brass body family with different shackle heights, so the choice comes down to how much clearance you need through the hasp. The A21 carries a 2 inch shackle. Each of the three is offered keyed different, keyed alike, master keyed and keyed alike master keyed, so you can mix body sizes across a site and still run them on one key system.
10) What other brass-body padlocks compare to the American Lock A21KA?
Two close brass alternatives: the Schlage KS23D/KS23F brass padlock also uses a 5/16 inch diameter shackle, which means it passes through the same hasp staple as the A21KA, and the Medeco 5260 is a 52 Series brass body padlock with a heavier 7/16 inch shackle and M3 key technology if you need a patented, restricted key. Sargent's 758 is a key retaining brass padlock in US4 satin brass, worth a look if you want the key trapped in the lock until it is relocked so it never walks off with the user. For interchangeable core sites, the Sargent 60-858-2 takes a removable core and uses a 2 inch stainless shackle, matching the A21KA's shackle height.
11) Is the A21KA a lockout/tagout padlock for electrical safety work?
No. The A21KA is a brass security padlock for gates, lockers, storage and marine use, and it is keyed alike, which is the opposite of what lockout/tagout requires. For LOTO you want a non-conductive safety lock such as the ABUS 72/30 anodized aluminum safety padlock, the ABUS 74/40 insulated safety padlock, or the ABUS 76/40 plastic-covered aluminum core padlock. Those are built for personal lockout duty, not perimeter security.
12) Can I use an ABUS 72/30 or 76/40 in place of the American Lock A21KA?
Not as a security equivalent. The ABUS 72/30 is an anodized aluminum safety padlock with a 1-1/4 inch body and 3/16 inch shackle, and the ABUS 76/40 is a plastic-covered aluminum core lock with a 1/4 inch shackle - both are lighter-duty bodies with thinner shackles than the A21KA's 5/16 inch hardened boron alloy shackle on a 1-3/4 inch solid brass body. The ABUS 72 and 76 series locks are aimed at lockout/tagout and light padlocking duty; the A21KA is a solid body lock with a dual ball bearing mechanism. They also will not fill the same hasp opening.
13) What brass padlock should I look at if I want a heavier shackle than the American Lock A21KA?
The Medeco 5260 is a 52 Series brass body padlock with a 7/16 inch shackle diameter, heavier than the 5/16 inch shackle on the A21KA. Note the larger shackle needs a hasp with a correspondingly larger staple opening, so check the hasp before swapping up from the A21KA.
14) Is there a padlock that keeps the key captive when open, unlike the American Lock A21KA?
The Sargent 758 is a key retaining padlock in a US4 satin brass finish, meaning the key cannot be removed while the lock is open - useful where a crew must not walk off with a lock left unsecured. The Sargent 858 and 82-856 are non-key-retaining. The A21KA is a hidden-shackle solid body lock with a non-rekeyable 5-pin cylinder, so key retention is the deciding difference here rather than body material, since both use brass.
15) Our electricians need a lockout padlock, not a security padlock like the American Lock A21KA - what fits?
For lockout/tagout use the ABUS 74/40 insulated safety padlock, which has a 6-pin cylinder, a 1/4 inch shackle diameter and a 1-1/2 inch body width - an insulated body is what you want on an energized disconnect. The A21KA is a solid brass body commercial security padlock with a hardened boron alloy shackle and is not an insulated safety lock, so keep the two programs separate.
16) Can I get the A21KA padlock with a chain so it doesn't get lost off the gate?
Yes. The A21KA can be ordered with a #40 sash chain, 9 inches long, zinc plated, so the lock stays tethered to the hasp or gate frame when it's open. It is also sold with no chain if you would rather use your own tether or keep the lock free. Any of the key-count options can be combined with the chained or unchained build.
17) I'm buying padlocks for a whole facility. How does the A21KA pack?
The A21KA ships 6 per shelf pack and 24 per master carton, which is a convenient break for handing out a batch per building or per crew on a keyed alike rollout. It is a commercial-duty padlock, not a consumer one, so it is the sort of item institutional and MRO buyers standardize on across storage rooms, lockers and yard gates.
18) What kind of cylinder is in the American Lock A21KA and how pick resistant is it?
It runs a 5-pin APTC12 cylinder with serrated pins, which is what makes it resist picking, and the body uses a dual stainless steel ball bearing locking mechanism so the shackle holds against pulling and prying attacks rather than relying on the cylinder alone. Combined with the hardened boron alloy shackle, the attack profile it is built against is cutting and prying at the gate, not just manipulation at the keyway.
19) What is the difference between the American Lock A21KA and the Sargent 82-856 for a brass padlock spec?
The Sargent 82-856 is a non-key-retaining padlock on the KESO platform with a 2 inch by 2 inch brass case and a stainless steel shackle. The A21KA is a 1-3/4 inch wide solid brass body with a 5/16 inch hardened boron alloy shackle standing 2 inches tall and a dual stainless steel ball bearing locking mechanism. Both are brass-cased; the A21KA is the narrower body, and the two sit on different key systems, so pick by which keyway your site is standardized on.
20) Is the ABUS T84MB/30 a substitute for the American Lock A21KA on a boat or dock?
They serve different duty levels. The ABUS T84MB/30 Nautic is a sleeved padlock with a 13/64 inch shackle diameter and a 1-17/64 inch body width - a compact marine lock. The A21KA is considerably heavier at 1-3/4 inch body width with a 5/16 inch hardened boron alloy shackle and a dual ball bearing mechanism, and its brass body is aimed at the same salt exposure. If the hasp and the exposure risk are light, the T84MB/30 suits; for dock boxes and offshore gear where cut and pry resistance matters, the A21KA is the heavier build.
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Does the American Lock AME-A21KA 2KEY come with a warranty?
Absolutely. The American Lock AME-A21KA 2KEY is backed by a manufacturer’s warranty.
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