You may also like
AMERICAN LOCK A20KAMK BRASS BODY REKEYABLE PADLOCK (HIDDEN SHACKLE) OVERVIEW
A20KAMK Brass Body Rekeyable Padlock (Hidden Shackle). Non-Rekeyable Padlocks - Solid Brass.
The American Lock No. A20KAMK 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 A20KAMK Brass Body Rekeyable Padlock (Hidden Shackle) for easy installation and dependable door hardware solution.
AMERICAN LOCK A20KAMK 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 A20KAMK 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:
- A20KAMK
- 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-A20KAMK 2KEY – Frequently Asked Questions
1) What does the KAMK suffix on the American Lock A20KAMK actually mean for my keying system?
KAMK means keyed alike and master keyed together. Every A20KAMK on a given order opens with the same change key, and a master key above that group opens them all. That is the setup for a property manager or self-storage operator who wants tenants or crews carrying one key while maintenance carries one master. If you need each lock on its own change key under a master instead, that is the A20MK; if you want keyed alike with no master above it, that is the A20KA.
2) Will the American Lock A20 hidden shackle padlock fit through my hasp?
The shackle openings are what decide it. The A20 gives you 1-1/8 inch of shackle clearance height with a 3/4 inch shackle width, on a 5/16 inch diameter shackle. Your hasp staple has to pass a 5/16 inch pin and the hasp eye has to sit inside that 1-1/8 by 3/4 inch window. The body itself is 1-3/4 inches wide, so allow for that much footprint against the door or container. If your hasp needs more clearance, the taller shackle versions in the same family (A21, A22) are the ones to look at.
3) Can the A20KAMK padlock be rekeyed later if I lose control of keys?
No. The A20 uses a 5-pin APTC12 non-rekeyable cylinder with serrated pins, so a locksmith cannot repin it in the field. If keys go missing you replace the lock rather than rekey it. If field rekeying matters to your operation, look at a removable core padlock instead, such as the Sargent 60-858-2, which takes a removable core and has a 2 inch stainless shackle.
4) Do I need to supply a key code when ordering the A20KAMK?
Yes, if you are adding locks to a system that already exists. There is a key code field on the order, and it is how the factory ties your new A20KAMK locks into the same keyed alike group and under the same master as the ones already in service. Leave it off and you risk getting a fresh group that your existing master will not turn.
5) What is the closest brass-body equivalent to the American Lock A20KAMK with the same shackle diameter?
The Schlage KS23D/KS23F is the nearest match on the two specs that matter most for a brass padlock swap: it is a brass padlock with a 5/16 inch diameter shackle, and the A20KAMK also uses a 5/16 inch shackle diameter in a solid brass body. The differences are in body size and keying: the A20KAMK has a 1-3/4 inch wide body with a 1-1/8 inch shackle length and ships keyed alike within a master key system, so verify the Schlage keying arrangement matches your system before mixing the two on the same hasps.
6) I need a brass padlock with a heavier shackle than the A20KAMK - what should I use?
Step up to the Medeco 5260, a 52 Series brass body padlock with a 7/16 inch shackle diameter in satin chrome, using M3 key technology. That is a thicker shackle than the 5/16 inch used on the A20KAMK. Confirm your hasp eye will pass a 7/16 inch shackle, since hasps drilled for the A20KAMK's 5/16 inch shackle with a 3/4 inch shackle width will not always accept it.
7) My facility is on an interchangeable core system - is the A20KAMK the right padlock?
No. The A20KAMK uses a non-rekeyable 5-pin APTC12 cylinder and is supplied keyed alike under a master key, so it cannot take a facility core. For a core-based program, the Sargent 60-858-2 is a removable core padlock with a 2 inch stainless steel shackle, which lets you key it to the same core system as the rest of the building. The Sargent also gives you a much longer shackle than the A20KAMK's 1-1/8 inch.
8) Is a brass body padlock the right choice for a marine or salt air application?
That is exactly what the brass body is for. The A20 uses a solid brass body 1-3/4 inches wide because brass holds up in caustic, corrosive and salty conditions where a plated steel body corrodes and seizes. The shackle is hardened boron alloy steel at 5/16 inch diameter for cut resistance. American Lock calls out marine and offshore security, docks and exposed storage as the intended uses. For a fully stainless alternative, the Medeco 521 G8R is a weather-tight padlock with a solid stainless steel body.
9) How many keys come with each American Lock A20KAMK padlock, and can I order them without keys?
Key count is something you pick on the order. Choices run 0, 1, 2, 3 or 4 keys per lock, with 2 keys per lock as the standard. Zero keys is the option large accounts use when they are already holding a bank of keys for that keyed alike group and do not want duplicate blanks shipping with every lock.
10) Can I get the A20 hidden shackle padlock with a chain attached so it does not get dropped or walked off?
Yes. The A20KAMK can be ordered with a #40 sash chain, 9 inches (229mm) long, zinc plated, or with no chain at all. The chain is what people use on gates, trailer doors and gang boxes where a loose padlock ends up in the gravel. Note the chain is zinc plated, not brass, so in the salt air service the brass body is built for, the chain will show corrosion before the lock body does.
11) What is a hidden shackle padlock and when should I use one instead of a standard padlock?
A hidden or shrouded shackle design pulls the shackle down close to the body so there is very little exposed steel for bolt cutters to get a bite on. The A20 pairs that short 1-1/8 inch shackle with a dual stainless steel ball bearing locking mechanism that resists pulling and prying. The trade-off is clearance: you get much less room to pass through a hasp than a standard shackle padlock, so it only works with a tight, well-fitted hasp. If your hasp or chain needs real clearance, a long shackle lock like the Sargent 858 with its stainless shackle is the better fit, and you accept the exposure.
12) How do the A20, A21 and A22 brass padlocks differ?
They are the same solid brass hidden shackle family in ascending shackle clearance, A20 being the shortest at 1-1/8 inch. Pick by how much room your hasp eye needs. Each of the three is offered keyed different, keyed alike, master keyed, and keyed alike master keyed, so the keying decision is independent of which body you choose.
13) Is there a brass padlock alternative with the same 5/16 inch shackle if I am standardized on another key system?
The Schlage KS23D/KS23F is a brass padlock with a 5/16 inch diameter shackle, which matches the A20 on shackle stock, and it fits accounts already running Schlage keyways. Medeco's 5260 is another brass body option, on a 7/16 inch shackle with M3 key technology in satin chrome, so it is heavier stock and a different cylinder platform. Both differ from the A20 in that the American Lock is a non-rekeyable cylinder and a hidden shackle body.
14) Does the key stay in the A20KAMK when it is unlocked, and what if I need the opposite behavior?
Key retention is the deciding difference between the two Sargent 758/858 padlocks and is worth confirming against how your staff use the lock. The Sargent 758 is a key retaining padlock in US4 satin brass, meaning the key cannot be withdrawn while the lock is open - useful where you do not want a shackle left hanging unlocked. The Sargent 858 is the non-key-retaining version, also US4 satin brass, so the key comes out either way. Both are brass-finished alternatives to the solid brass A20KAMK.
15) Are the ABUS 72/30 and 74/40 padlocks substitutes for the American Lock A20KAMK?
They are not interchangeable for security applications. 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 74/40 is an insulated safety padlock with a 6-pin cylinder, 1/4 inch shackle and 1-1/2 inch body. Safety padlocks of that type are built for lockout/tagout identification on energy isolation points, with light aluminum bodies and thin shackles. The A20KAMK is a solid brass 1-3/4 inch body lock with a 5/16 inch hardened boron alloy shackle and dual ball bearing locking, intended for gates, storage and marine exposure.
16) For a coastal or wash-down location, what are my options besides the brass A20KAMK?
The A20KAMK uses a solid brass body specifically for corrosion resistance in caustic, salty and marine environments. If you would rather run stainless, the Medeco 521 G8R is a weather-tight padlock with a solid stainless steel body, supplied less the pop-out cylinder so you can fit your own. For a smaller lock on boat lockers or covers, the ABUS T84MB/30 Nautic has a black sleeve over a 1-17/64 inch body with a 13/64 inch shackle - a much lighter build than the A20KAMK's 5/16 inch boron alloy shackle.
17) I need audit trail and access control on a padlocked gate - is there an alternative to the A20KAMK?
Yes. The Medeco 54515G XT is an electronic indoor/outdoor padlock, non-key retaining, with a 5/16 inch shackle diameter and cylinder included - the same shackle diameter as the A20KAMK, so it will pass through the same hasp eye. The A20KAMK is a purely mechanical lock with a non-rekeyable 5-pin cylinder keyed alike under a master key, which gives you system keying but no electronic record of who opened it.
18) How do these ship for a multi-site rollout, and what quantity should I plan on?
The A20KAMK packs 6 per shelf pack and 24 per master carton. For an MRO or property group standardizing a building, that master carton of 24 keyed alike under one master is a practical unit to plan around per site or per crew.
19) Is the American Lock A20KAMK suitable for commercial use, and is the gold look a finish or the actual metal?
It is rated for commercial service, and the gold color is the brass itself, not a plating, since the body is solid brass. That matters for long outdoor exposure: a plated finish wears through and the base metal starts rusting, while solid brass stays brass all the way down.
20) Is the ABUS 76/40 a good stand-in for the A20KAMK where I want to protect a painted surface?
The ABUS 76/40 is a plastic-covered aluminum core padlock with a 1/4 inch shackle diameter and a body roughly 1-37/64 inch wide, and the plastic jacket is what keeps it from marring a finished door or cabinet. The A20KAMK has a bare solid brass 1-3/4 inch body with a 5/16 inch boron alloy shackle, so it is the heavier shackle but will contact the surface directly. Choose on whether shackle strength or surface protection matters more at that opening.
How fast can I get the American Lock AME-A20KAMK 2KEY delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the American Lock AME-A20KAMK 2KEY come with a warranty?
Absolutely. The American Lock AME-A20KAMK 2KEY is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the American Lock AME-A20KAMK 2KEY?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the American Lock AME-A20KAMK 2KEY from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.