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AMERICAN LOCK A21KAMK BRASS BODY REKEYABLE PADLOCK (HIDDEN SHACKLE) OVERVIEW
A21KAMK Brass Body Rekeyable Padlock (Hidden Shackle). Non-Rekeyable Padlocks - Solid Brass.
The American Lock No. A21KAMK 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 A21KAMK Brass Body Rekeyable Padlock (Hidden Shackle) for easy installation and dependable door hardware solution.
AMERICAN LOCK A21KAMK 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 A21KAMK Brass Body Rekeyable Padlock (Hidden Shackle) Catalog
Manufacturer Resources
American Lock 2016 Product Catalog
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:
- A21KAMK
- 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-A21KAMK 2KEY – Frequently Asked Questions
1) Will the American Lock A21KAMK fit through my hasp? What are the shackle dimensions?
The A21KAMK has a 5/16 inch diameter shackle standing 2 inches tall with a 3/4 inch clearance between the legs. Your hasp staple needs a hole of at least 5/16 inch, and you need 3/4 inch of horizontal room to capture both hasp leaves. The brass body itself measures 1-3/4 inches wide, so check that the hasp backplate leaves that much room against the door or gate frame.
2) What does keyed alike master keyed mean on the American Lock A21 padlock, and do I have to supply a key code?
Keyed alike master keyed means every A21KAMK on your order opens with the same change key, and all of them also open under a master key that can be shared across other American Lock cylinders in your system. That only works if the factory knows your system, so a key code entry is part of the order. Property managers running one key for all storage units, with a master for the office, are the usual buyers of this configuration. If you want each lock on its own key while still sitting under a master, the A21MK is the keyed different master keyed version instead.
3) I run small format interchangeable core keying across my site. Is the American Lock A21KAMK the right padlock?
No. The A21KAMK is factory keyed to a code you supply at order time, so a locksmith cannot drop your existing core into it in the field. If you key your facility on removable cores, look at the Sargent 60-858-2, a removable core padlock with a 2 inch stainless steel shackle, so the padlocks join the same core rotation as your doors.
4) What is the closest brass-body padlock to the American Lock A21KAMK with the same shackle diameter?
The Schlage KS23D/KS23F is the nearest match on those two counts: it is a brass padlock with a 5/16 inch diameter shackle, the same shackle diameter carried by the A21KAMK, which also uses a brass body. The A21KAMK is specified with a 1-3/4 inch body width and a 2 inch shackle length, and it is supplied keyed alike within a master key system. The Schlage is part of the 20 Series. If the requirement is brass plus a 5/16 inch shackle, either will take the same hasp clearance; if the requirement is that the locks key into an existing American Lock master system, stay with the A21KAMK.
5) I need padlocks that accept my facility's interchangeable cores instead of a fixed cylinder like the A21KAMK. What should I order?
Look at the Sargent 60-858-2, a removable core padlock with a 2 inch stainless steel shackle. Removable core lets your locksmith drop in the facility's own core rather than working to a factory key system. The American Lock A21KAMK is built the other way: a fixed brass-body lock supplied keyed alike as part of a master keyed order, with a 2 inch shackle length and 5/16 inch shackle diameter. Choose by keying program first, since the two are not interchangeable at the cylinder.
6) How many keys come with the American Lock A21KAMK, and can I order it with no keys?
Keys are an ordering choice: 0, 1, 2, 3, or 4 keys per lock. Standard is 2 per lock. Zero keys is the normal pick on a large keyed alike order where one set of change keys covers the whole group and you do not want a pile of duplicates arriving with each padlock.
7) Can I get this brass padlock with a chain so it stays attached to the gate?
Yes. The A21 brass padlock can be ordered with a #40 zinc plated sash chain, 9 inches (229mm) long, or with no chain at all. The chain keeps the lock tethered to the hasp or gate so it does not walk off or drop in the mud when a driver opens the yard. Both chain choices are available at every key count from 0 to 4 keys per lock.
8) Is a brass body padlock the right choice for coastal or wash-down locations?
That is the reason to buy the A21 over a steel-bodied lock. The solid brass body resists corrosion in salty, caustic and wet conditions, which is why it gets specified for marine and offshore work, docks, and outdoor sheds and yards. Brass carries the load here, and the shackle is hardened boron alloy steel for cut resistance rather than corrosion duty, so it still wants a periodic rinse and lube in a salt environment.
9) What stops someone pulling or prying the shackle out of this padlock?
A dual stainless steel ball bearing locking mechanism holds the shackle on both legs, which is what resists pulling and prying attacks rather than a single spring latch. The cylinder is a 5-pin APTC12 with serrated pins to frustrate picking. Combined with the 5/16 inch hardened boron alloy shackle, the attack profile it is built against is bolt cutters and pry bars at exposed outdoor openings.
10) Is the American Lock A21 a lockout tagout safety padlock?
No. The A21 is a commercial security padlock in a gold brass finish, built for gates, storage units, sheds and marine openings. Lockout tagout wants a non-conductive or color coded safety lock: the ABUS 72/30 anodized aluminum safety padlock with a 1-1/4 inch body and 3/16 inch shackle, or the ABUS 74/40 insulated safety padlock with a 6-pin cylinder, 1/4 inch shackle and 1-1/2 inch body, are the ones built for that duty.
11) Which American Lock brass padlock do I order if I want each lock on a different key?
The A21KAMK is the keyed alike master keyed build. If you want separate keys, the A21 (also written A21KD) is keyed different, and the A21KA is keyed alike without a master. Same brass body and hardware across all of them, so you can mix keying schemes on one site and keep a single lock model on every hasp.
12) Is a key-retaining padlock available as an alternative to the American Lock A21KAMK for doors that must never be left unlocked?
Yes. The Sargent 758 is a key retaining standard padlock in a US4 satin brass finish, so the key cannot be withdrawn while the shackle is open. Its non-key-retaining counterpart is the Sargent 858, also with a stainless steel shackle in US4 satin brass. The American Lock A21KAMK is a brass body lock in a gold color with a 1-3/4 inch body and 5/16 inch shackle. If a procedure requires the operator to keep possession of the key while the lock is off the hasp, the 758 is the one written for that.
13) Can I use an ABUS 72/30 safety padlock in place of the American Lock A21KAMK?
They are built for different jobs. The ABUS 72/30 is an anodized aluminum safety padlock with a 1-1/4 inch body width and a 3/16 inch shackle diameter, part of the 72 Series; safety padlocks of that type are sized for lockout/tagout on energy isolation points. The American Lock A21KAMK is a commercial brass body padlock, 1-3/4 inch wide with a 5/16 inch shackle and a 3/4 inch shackle width, supplied keyed alike on a master key system. The heavier shackle on the A21KAMK will not pass through a hasp drilled for the 3/16 inch ABUS shackle, so confirm the hasp eye before swapping either direction.
14) For a dock or marine application, what padlock competes with the American Lock A21KAMK?
Two peers are specified for wet exposure. The Medeco 521 G8R is a weather-tight padlock with a solid stainless steel body, supplied less pop-out cylinder. The ABUS T84MB/30 Nautic uses a black sleeve over the body with a 13/64 inch shackle diameter and a 1-17/64 inch body width. The American Lock A21KAMK takes the brass route instead, with a solid brass body 1-3/4 inches wide and a 5/16 inch shackle. Brass and stainless resist salt differently in service, and the Medeco arrives without a cylinder, so a shop that stocks Medeco cylinders can core it to an existing system while the A21KAMK ships keyed alike on a master key order.
15) What brass padlock has a heavier shackle than the American Lock A21KAMK?
The Medeco 5260 in the 52 Series has a brass body with a 7/16 inch shackle diameter and M3 key technology, finished satin chrome. That is a larger shackle section than the 5/16 inch diameter on the American Lock A21KAMK, which is a gold-color brass body lock 1-3/4 inches wide with a 2 inch shackle length. Before specifying the 5260, verify the hasp eye and any chain or cable link will clear a 7/16 inch shackle, since hardware drilled for the A21KAMK will not necessarily accept it.
16) Is there an electronic padlock option instead of a mechanical key lock like the American Lock A21KAMK?
Yes. The Medeco 54515G XT is an electronic indoor/outdoor padlock, non-key retaining, with a 5/16 inch shackle diameter and supplied with a cylinder. It shares the 5/16 inch shackle diameter of the American Lock A21KAMK, so it drops into the same hasp opening. The difference is the credential: the A21KAMK is a keyed lock delivered keyed alike within a master key system, while the XT platform is audited electronically. Sites that need to know who opened which lock and when go electronic; sites standardizing on a mechanical master key stay with the A21KAMK.
17) Which padlock should I specify for a high-security keying system rather than the American Lock A21KAMK?
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, and the Medeco 5260 uses M3 key technology in a 52 Series brass body. Both are restricted-keyway platforms intended for controlled key issue. The American Lock A21KAMK is a brass body commercial padlock ordered keyed alike within a master key system, 1-3/4 inches wide with a 2 inch shackle. Specify the KESO or M3 lock when key duplication has to be controlled at the factory; specify the A21KAMK when the padlocks need to fold into an existing American Lock master system.
18) How many American Lock A21 padlocks are in a carton for a bulk order?
Packaging runs 6 per shelf pack and 24 per master carton. For a facility standardizing a keyed alike group, ordering in multiples of 24 keeps the cartons intact and keeps the whole run on one key system.
19) Does the key stay in the American Lock A21 padlock when it is unlocked, or can it be pulled out?
If key retention is what decides it for you, compare the Sargent pair: the 758 is key retaining, meaning the key cannot be withdrawn while the lock is open, and the 858 is non-key retaining with a stainless steel shackle, both in US4 satin brass. Key retaining is what lockout and utility crews specify so a padlock is never left hanging open with the key in a pocket.
20) I need a padlock that will not mar a painted or powder-coated surface. Is one of these better than the American Lock A21KAMK?
The ABUS 76/40 is a plastic-covered aluminum core padlock with a 1/4 inch shackle diameter and a 1-37/64 inch width, and the ABUS 74/40 is an insulated safety padlock with a 6-pin cylinder, 1/4 inch shackle diameter and 1-1/2 inch body width. Both put a non-metallic jacket between the lock body and the surface it swings against. The American Lock A21KAMK is bare solid brass, 1-3/4 inches wide with a 5/16 inch shackle, which resists corrosion but will contact the door or cabinet metal-to-metal. Note the two ABUS models take a 1/4 inch shackle rather than 5/16 inch, so check the hasp before switching.
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Absolutely. The American Lock AME-A21KAMK 2KEY is backed by a manufacturer’s warranty.
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