American Lock® Master Lock®

One key number. Every lock in the set.

Keyed to a new number, or to the one on your keys.

Two keys per lock.

6+ · 15% off24+ · 20% offper model & color

By color · one key number per set

Eight standard colors. Twenty-two more.

Most sets go out in one color per crew or building, each keyed to its own number. Pick the color; the set comes keyed to one number.

A1106KAPCREDAs low as, 24 plus locks,$32.80

A1106KAPCORJAs low as, 24 plus locks,$32.80

A1106KAPCYLWAs low as, 24 plus locks,$32.80

A1106KAPCGRNAs low as, 24 plus locks,$32.80

A1106KAPCBLUAs low as, 24 plus locks,$32.80

A1106KAPCPRPAs low as, 24 plus locks,$32.80

A1106KAPCBLKAs low as, 24 plus locks,$32.80

A1106KAPCWHTAs low as, 24 plus locks,$32.80

8 colors · swipe sideways →

Color chart · the other twenty-two Powder-coat and anodized · A1106 shown
Anodized · 9 A1106 · as low as $19.36 at 24+ locks
Need a color that isn't here? Custom powder coat and engraving are done in house; call for either.Every finish on the A1106 →

Every set is keyed to one number: a new one, or the one on keys you already have. It is stamped on every key. Already have locks in service? Search the number and have the new locks keyed to it.

A color is not one lock. A set can run A1105s, A1205s and A1306s, all green, all on one key number. Solid steel locks (A5200, A5261, A50) join a set too. Quantity breaks are counted per model and color.

The rail · two ways to buy a set

Pull a tag off the rail.

Lane 1 · sets by colorAluminum in eight colors, Zenex safety locks in five. Pick the color; one key opens the set.

Crews, buildings, LOTO stations. Add locks later in the same color and the same number. Shown here in red.

American Lock1in shackle

A1105

Solid aluminum · 1‑1/2in (38mm) body · 1in shackle · 1/4in dia

30 finishes
As low as, 24 plus locks, $31.04 per lock
View A1105
American Lock1‑1/2in shackle

A1106

Solid aluminum · 1‑1/2in (38mm) body · 1‑1/2in shackle · 1/4in dia

30 finishes
As low as, 24 plus locks, $32.80 per lock
View A1106
American Lock3in shackle

A1107

Solid aluminum · 1‑1/2in (38mm) body · 3in long shackle · 1/4in dia

30 finishes
As low as, 24 plus locks, $34.56 per lock
View A1107
Master Lock1‑1/2in shackle

406 Zenex™

Thermoplastic lockout/tagout · 1‑1/2in body · 1‑1/2in shackle · non-conductive

8 colors
As low as, 24 plus locks, $17.28 per lock
View 406 Zenex™

4 tags · swipe sideways →All sets by color

Lane 2 · economy setsLaminated steel. Six locks, one key.

Gates, sheds, trailers, storage units. From $80.58 for six. Add a seventh next year and it opens with the same key.

Master Lock1‑9/16in body

No. 3

Laminated steel · 1‑9/16in (40mm) body · 3/4in shackle · 9/32in dia

Steel finish
As low as, 24 plus locks, $12.64 per lock
View No. 3
Master Lock1‑3/4in body

No. 1

Laminated steel · 1‑3/4in (44mm) body · 15/16in shackle · 5/16in dia

Steel finish
As low as, 24 plus locks, $14.24 per lock
View No. 1
Master Lock2in body

No. 5

Heavy-duty laminated steel · 2in (51mm) body · 1in shackle · 3/8in dia

Steel finish
As low as, 24 plus locks, $17.76 per lock
View No. 5
Master Lock2‑1/8in body

6121

Laminated steel · 2‑1/8in (54mm) body · 1‑1/8in shackle · 5/16in dia

6 colors
As low as, 24 plus locks, $30.40 per lock
View 6121

4 tags · swipe sideways →See all models

Three ways to key a padlock

We sell the one where everybody carries the same key.

Retail padlocks come Keyed Different: each one has its own key, and after six months nobody knows which is which. Keyed Alike ends that problem for good.

This is what we do

Keyed AlikeKA · one key opens every lock

KA

Every padlock in the set opens with the same key. One key per person, one spare in the office, no ring of forty. Add locks later and they come keyed to the same number.

Keyed DifferentKD · every lock has its own key

KD

The default at the hardware store. Fine for one gym locker. For a fleet, a school, or a plant it means a drawer of loose keys and a Tuesday spent cutting shackles off.

Master KeyedMK · own key each, plus one master

MK

Tenants, students, or crews each get a key to their own lock; the manager's key opens all of them. Quoted per system, because the pinning chart has to be planned before the locks are keyed.

Two more materials · keyed alike to order

Solid brass. Solid steel. One key number.

Not every lock on a job takes a color. Solid brass for the weather, solid steel for the strength; both keyed alike to order, two keys per lock.

Solid brass Corrosion-resistant solid brass bodies

View all solid brass →
American Lock

A40

Solid brass · 1‑1/2in (38mm) body · 1in shackle · 1/4in dia

As low as, 24 plus locks, $19.52 per lock
View A40
American Lock

AL50

Solid brass · 1‑3/4in (44mm) body · 1‑1/8in shackle · 5/16in dia

As low as, 24 plus locks, $52.16 per lock
View AL50
American Lock

A5560

Solid brass · 1‑3/4in (44mm) body · 1‑1/8in shackle · 5/16in dia

As low as, 24 plus locks, $30.88 per lock
View A5560
American Lock

A5561

Solid brass · 1‑3/4in (44mm) body · 2in shackle · 5/16in dia

As low as, 24 plus locks, $34.40 per lock
View A5561
American Lock

A5571

Solid brass · 2in (51mm) body · 2in shackle · 3/8in dia

As low as, 24 plus locks, $38.40 per lock
View A5571

Solid steel Hardened solid steel bodies

View all solid steel →
American Lock

A5200

Solid steel · 1‑3/4in (44mm) body · 1‑1/8in shackle · 5/16in dia

As low as, 24 plus locks, $27.36 per lock
View A5200
American Lock

A5201

Solid steel · 1‑3/4in (44mm) body · 2in shackle · 5/16in dia

As low as, 24 plus locks, $30.56 per lock
View A5201
American Lock

A700

Solid steel · 2‑1/2in (64mm) body · 1‑1/16in shackle · 7/16in dia

As low as, 24 plus locks, $42.56 per lock
View A700
American Lock

A701

Solid steel · 2‑1/2in (64mm) body · 2in shackle · 7/16in dia

As low as, 24 plus locks, $44.32 per lock
View A701
American Lock

AH10

Solid steel · 2in (51mm) body · 1‑1/16in shackle · 7/16in dia

As low as, 24 plus locks, $50.88 per lock
View AH10
Planning a set · not to scale

Walk the yard. Count the locks.

One key number doesn't have to mean one model. Give each gate, box and trailer the lock that fits it. All five models on this plan share American Lock's standard 5‑pin cylinder, so all five can be keyed to the same number.

Site plan of an example yard, its padlocks numbered to the lock schedule A fenced yard on a street, walked in order. 1, Yard gate: a chain through both leaves of the gate, its lock on the street side. 2, Tool crib: a mesh cage inside the shop, locked at its door. 3, Job boxes: six boxes in a row outside the shop. 4, Container: a shipping container without a lock box, padlocked through its door handle. 5, Fuel cage: a fuel tank inside a fenced cage, locked at the cage gate. 6, Trailers: four trailers, locked at their rear doors. L, Disconnects (lockout): lockout locks on the disconnects in the shop's electrical room, kept off the yard key. 123456L

Lock schedule

14 locks · 5 models
  1. Yard gateSolid steel at the street, 3/8in shackle through the chain. A5261Steel Quantity 1
  2. Tool crib5/16in‑thick shackle for the cage door’s padlock lugs. A1205Green Quantity 1
  3. Job boxesMade for job and gang boxes. A50Steel Quantity 6
  4. ContainerSolid steel, 3/8in‑thick shackle through the door handle. A5260Steel Quantity 1
  5. Fuel cageSteel on the fuel, too. Same lock as the yard gate. A5261Steel Quantity 1
  6. TrailersSolid steel, short 1‑1/8in shackle for the door latch. A5200Steel Quantity 4
  7. Disconnects (lockout)Each worker's own set, on its own number. Never on the yard key. Safety / LOTOQuantity: Per worker

Not on this key: trailer coupler locks, lock-box puck locks, and the fire department’s lock on the gate chain.

Sheet
Example yard
Keying
KA · 25432
Breaks
Counted per model and color.
Already have locks in service?

Type the number on your key. Order more to match.

Bought from us before, or from anyone who sold you a real KA set? The key number is stamped on the bow of the key: usually four characters for Master Lock (like 3303 or X204), five for American Lock (like 25432 or A1463). Type it in to see the locks for that brand; order any of them with the number and the new set is keyed to it. No number on the key? Call; a person answers.

American Lock keys with the key number stamped on the bow.
Key number

It's stamped on the bow of your key.

Usually four characters on a Master Lock key (like 3303 or X204), five on an American Lock key (like 25432 or A1463). Type it in to see the models for that brand.

Lost the number? Call (800) 314-8786; a person answers.