Lockout Padlocks

Which lockout padlocks should you choose in 2026?

Short answer: For most single-worker programs, pick a keyed-different aluminum lock like the Brady SafeKey ALU-PRP-38ST-KD purple so no one key opens another worker's lock. Need to outfit a crew at once? Buy a keyed-different multi-pack such as the TRADESAFE TS1KD10R 10-pack red or the ABUS 74/40 non-conductive 10-pack. For a tall hasp stack or wide cable runs, reach for the long-shackle ABUS 2ALHB/40-75. See the full ranking in our best lockout/tagout padlocks guide.

Lockout Padlocks for OSHA 1910.147 Energy Control (2026)

Lockout padlocks are the personal isolation device at the heart of an OSHA 29 CFR 1910.147 energy-control program: each authorized worker applies their own lock to an energy-isolating device (a breaker, valve handle, or disconnect) so the machine cannot be re-energized while they are exposed. A padlock rarely works alone — it clamps onto a lockout hasp, threads through a cable lockout, or secures a plug lockout, and it lives in a stocked lockout station alongside lockout tags. If you are building the program from scratch, start with our what is lockout/tagout primer and the step-by-step how to perform LOTO procedure. This hub collects the padlocks and small lock packs that satisfy the device half of the standard. Keying is the first decision: keyed-different (KD) gives every worker a unique key for true personal lockout, while keyed-alike (KA) lets one key open a matched set for repetitive single-operator work. Body material, shackle clearance, and color-coding follow from there. New to the category? Read how to choose a lockout padlock and lockout vs tagout before you buy, or browse the wider lockout/tagout devices catalog.

Editor's pick — Brady SafeKey Aluminum Lockout Padlock ALU-PRP-38ST-KD — Purple, Keyed Different
The Brady SafeKey ALU-PRP-38ST-KD is the best all-round pick in this collection for personal lockout. It ships keyed-different out of the box, so each worker's lock is opened only by their own key — exactly the one-worker/one-lock/one-key model 1910.147 expects. The lightweight aluminum body resists corrosion in damp plant environments, the bold purple color makes the lock instantly identifiable on a crowded hasp, and the SafeKey cylinder is a recognized industrial line that integrates with broader key-management schemes. Sibling colors (blue, black) let you color-code by department or shift without changing platforms. Full breakdown in our Brady SafeKey purple review.

VIEW BRADY SAFEKEY ALUMINUM LOCKOUT PADLOCK ALU-PRP-38ST-KD — PURPLE, KEYED DIFFERENT →CHECK PRICE ON AMAZON →

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What this collection covers

• Brady SafeKey aluminum (purple/blue/black, KD) — The everyday personal-lockout workhorse: lightweight keyed-different aluminum locks with a color per worker or department. Start with the purple ALU-PRP-38ST-KD (review), then match the blue ALU-BLU-38ST-KD (review) and black ALU-BLK-38ST-KD (review) for color-coded crews.
• ABUS 2ALHB/40-75 long-shackle (KA, aluminum) — A long-shackle aluminum lock for tall hasp stacks and wide isolation points where a standard shackle won't reach. Keyed-alike, so one key opens the matched set — best for single-operator repetitive work, not multi-worker lockout. See the ABUS 2ALHB/40-75 and its review.
• ABUS 74/40 non-conductive 10-pack (KD) — A keyed-different 10-pack with a non-conductive body, suited to electrical isolation tasks where a dielectric lock is preferred. Outfits a small crew with unique keys in one purchase. Browse the ABUS 74/40 10-pack and its review.
• American Lock A1107R safety padlock (red) — A high-visibility red safety lockout padlock from a long-standing industrial line, good as a standardized single-purpose lock dedicated to energy control. See the American Lock A1107R and its review.
• Master Lock 410GRN safety padlock (green) — A widely recognized thermoplastic-body lockout padlock in green for color-coding. A dependable individual lock for general LOTO use. See the Master Lock 410GRN and its review.
• TRADESAFE TS1KD10R 10-pack (red, KD) — A budget-friendly keyed-different 10-pack in red for kitting out a department where every worker needs a uniquely keyed lock. See the TRADESAFE TS1KD10R and its review.
• TRADESAFE TSKAU10YL lock set (yellow, KA) — A keyed-alike yellow 10-pack — one key opens the whole set, best for a single operator who manages many isolation points at once rather than for true multi-worker personal lockout. See the TRADESAFE TSKAU10YL and its review.
• QWORK QS8899 LOTO cable locks (4-pack steel) — Cable-style locks with keys for isolation points a rigid shackle can't span — gate valves, oversized handles, and grouped equipment. See the QWORK QS8899 4-pack and its review; for more options visit cable lockouts.
• Brady 123143 compact personal safety kit — A portable LOTO pouch that pairs locks, a hasp, and tags for grab-and-go isolation — the bridge between a loose padlock and a full station. See the Brady 123143 kit and its review, or compare in the best lockout/tagout kits guide.

Lockout/tagout devices compared

Shop lockout/tagout on Amazon →Brady SafeKey ALU-PRP-ABUS 2ALHB/40-75ABUS 74/40 (10-pack)American Lock A1107RMaster Lock 410GRN

Which device should you buy?

• Buy the Brady SafeKey ALU-PRP-38ST-KD purple if you need a single keyed-different personal lock and want to color-code by worker or department.
• Buy the TRADESAFE TS1KD10R 10-pack if you're outfitting a whole crew at once and every worker must have a uniquely keyed lock on a budget.
• Buy the ABUS 74/40 non-conductive 10-pack if your isolation points are electrical and you prefer a dielectric (non-conductive) lock body.
• Buy the ABUS 2ALHB/40-75 long-shackle if your shackle has to clear a tall hasp stack or a wide handle that a standard shackle can't span.
• Buy the QWORK QS8899 cable locks if a rigid padlock shackle won't fit the isolation point — gate valves, large levers, or grouped equipment; see more in cable lockouts.
• Buy the TRADESAFE TSKAU10YL keyed-alike set only if a single operator manages many locks at once — keyed-alike is not for multi-worker personal lockout.
• Buy the Brady 123143 compact kit if you want a grab-and-go pouch with locks, hasp, and tags bundled; compare kits in the best LOTO kits guide.

How to choose

Keyed-different vs keyed-alike

Keyed-different (KD) gives each lock a unique key — the foundation of personal lockout under 1910.147, where each worker controls their own isolation. Keyed-alike (KA) opens a matched set with one key, which is fine for a single operator handling many points but wrong for multi-worker lockout. KD packs like the TRADESAFE TS1KD10R suit crews; KA sets like the TRADESAFE TSKAU10YL suit one operator. See how to choose a lockout padlock.

Body material and dielectric needs

Aluminum bodies (the Brady SafeKey line, ABUS 2ALHB/40-75) are light and corrosion-resistant; thermoplastic bodies like the Master Lock 410GRN are non-conductive. For electrical isolation, prefer a body stated to be non-conductive, such as the ABUS 74/40 — don't assume dielectric properties that aren't listed.

Shackle clearance and reach

The shackle has to pass through your hasp eye or cable loop with room to close. Standard shackles handle most single-lock hasps; a long shackle like the ABUS 2ALHB/40-75 reaches across a multi-lock hasp stack or an oversized handle. When the geometry defeats any shackle, switch to a cable lockout such as the QWORK QS8899.

Personal vs group lockout

Each authorized employee applies their own lock and keeps the only key. When several workers service one machine, every worker's KD lock goes onto a lockout hasp so the machine can't restart until the last person removes theirs. Walk through the sequence in how to perform LOTO.

Color-coding and identification

Color lets supervisors read a hasp at a glance — assign colors by worker, shift, or department. The Brady SafeKey range spans purple, blue, and black on one platform; the American Lock A1107R is red and the Master Lock 410GRN is green. Pair every lock with a lockout tag identifying who applied it.

Pack economics and program scale

One-off locks suit a few authorized workers; 10-packs like the TRADESAFE TS1KD10R and ABUS 74/40 cut per-lock cost when you standardize a department. Stock the spares in a lockout station and compare bundles in the best lockout/tagout padlocks guide.

OSHA 1910.147 & device requirements

OSHA's Control of Hazardous Energy standard, 29 CFR 1910.147, requires that the locks and tags used for energy control be durable enough to withstand the workplace environment, standardized within the facility (by color, shape, or size), substantial enough to prevent removal without excessive force or unusual techniques, and identifiable so the device shows who applied it. In practice this drives the one-worker/one-lock/one-key model: each authorized employee applies their own lock to the energy-isolating device and retains the sole key, and that lock is used only for energy control — not for other purposes. Keyed-different padlocks make personal accountability enforceable, while a lockout hasp lets multiple workers apply locks to a single isolation point during group servicing. To map devices to the procedure, read what is lockout/tagout, how to perform LOTO, and lockout vs tagout.

Total cost of ownership

A lockout padlock's real cost is measured over years of daily clamping, drops, and exposure, not just the sticker price. Aluminum and thermoplastic bodies resist corrosion better than bare steel in wet or washdown areas, which delays replacement; the Brady SafeKey line and ABUS locks are built for that service. When you standardize a department, keyed-different multi-packs like the TRADESAFE TS1KD10R and ABUS 74/40 10-pack lower per-lock cost and keep your key charting consistent, while keeping a few spares in a lockout station means a lost lock never stalls a job. Budget for periodic lock and tag replacement as part of program upkeep, and compare long-term value in the best lockout/tagout padlocks guide.

Frequently asked questions

What is a lockout padlock?

It's a single-purpose padlock used to hold an energy-isolating device (breaker, valve, or disconnect) in the safe position during servicing under OSHA 1910.147. Each authorized worker applies their own and keeps the key. Start with what is lockout/tagout, then browse lockout padlocks.

What's the difference between keyed-different and keyed-alike?

Keyed-different (KD) means every lock has its own unique key, so no other lock opens it — required for true personal lockout. Keyed-alike (KA) means one key opens a matched set, suited to a single operator with many locks. For crews choose KD like the TRADESAFE TS1KD10R; for one operator the TRADESAFE TSKAU10YL is keyed alike.

Which lockout padlock is best for most people?

For single-worker personal lockout, the keyed-different Brady SafeKey ALU-PRP-38ST-KD purple is our editor's pick: light, corrosion-resistant, easy to spot, and part of a color range. See the full ranking in the best lockout/tagout padlocks guide.

Do I need keyed-different locks for OSHA compliance?

1910.147 expects each worker to control their own isolation with the sole key. Keyed-different locks make that enforceable because no shared key can defeat another worker's lock. KD packs like the ABUS 74/40 10-pack suit multi-worker programs. Review how to perform LOTO for the procedure.

Are any of these padlocks non-conductive?

The ABUS 74/40 10-pack is listed as non-conductive, and thermoplastic-body locks such as the Master Lock 410GRN are also non-conductive. Only rely on dielectric properties when the listing states them — don't assume from material alone. See how to choose a lockout padlock.

When should I use a long-shackle padlock?

Use a long shackle when you must reach across a multi-lock hasp stack or a wide handle a standard shackle can't span. The ABUS 2ALHB/40-75 is the long-shackle option in this collection. Note it is keyed alike, so it's best for single-operator use.

How do colors help in a lockout program?

Color-coding lets a supervisor read a hasp at a glance and assign locks by worker, shift, or department. The Brady SafeKey range covers purple, blue, and black; the American Lock A1107R is red. Pair each lock with a lockout tag.

How many lockout padlocks do I need?

Each authorized worker needs their own lock for every machine they service simultaneously, plus spares for losses. Outfit a crew at once with a keyed-different 10-pack like the TRADESAFE TS1KD10R, and keep extras in a lockout station.

What if a padlock shackle won't fit the isolation point?

When a rigid shackle can't span a valve, large lever, or grouped equipment, use a cable lock. The QWORK QS8899 4-pack steel cable locks thread through awkward points; see more in cable lockouts.

Do I still need a tag if I use a padlock?

Yes — under 1910.147 the device must identify who applied it, so a tag naming the worker accompanies the lock. Browse lockout tags and read lockout vs tagout to understand how the two work together.

What's the difference between a single padlock and a LOTO kit?

A single padlock isolates one point; a kit bundles locks, a hasp, and tags for grab-and-go personal lockout. The Brady 123143 compact kit is the portable-pouch option here — compare kits in the best lockout/tagout kits guide.

How do multiple workers lock out one machine?

Each worker applies their own keyed-different lock to a lockout hasp on the single isolation point; the machine can't be re-energized until the last worker removes their lock. The step-by-step is in how to perform LOTO.

Are aluminum or thermoplastic padlocks better?

Aluminum bodies like the Brady SafeKey line are light and corrosion-resistant; thermoplastic bodies like the Master Lock 410GRN are non-conductive. Choose by environment and whether you need dielectric protection — see how to choose a lockout padlock.

Can I buy lockout padlocks in bulk?

Yes. Keyed-different 10-packs such as the TRADESAFE TS1KD10R and ABUS 74/40 lower per-lock cost and keep keying consistent across a department, while the keyed-alike TRADESAFE TSKAU10YL suits a single operator.

Where do lockout padlocks fit in the wider LOTO program?

They are the worker-applied device that locks an isolation point, working alongside lockout hasps, cable lockouts, plug lockouts, lockout tags, and lockout stations. Browse the full lockout/tagout devices catalog to assemble a complete program.

🔧 Free tool: Before you service that machine, run our Lockout/Tagout Checklist (OSHA 1910.147).

Frequently Asked Questions

What is lockout/tagout?

Service and maintenance work relies on lockout/tagout, the OSHA 1910.147 process for isolating hazardous energy so a machine cannot start unexpectedly and injure a worker.

Should lockout padlocks be keyed differently?

Yes, keyed-different padlocks matter: each worker's lock opens with only their key, so nobody else can strip it off and bring the equipment back to life prematurely.

How does group lockout work?

Several workers can lock one isolation point through a hasp or group lock box, where every person adds a padlock and the point stays locked until the last one clears it.

What is the difference between lockout and tagout?

The lock makes energization physically impossible, but a tag is only a warning. OSHA leans toward lockout and accepts tag-only control just where a lock is not feasible, with safeguards.

Where should lockout padlocks be stored?

House the padlocks, hasps, and tags together at a board or station near the job, so the correct devices stay organized, accounted for, and ready to grab when work begins.

What energy sources must be controlled?

Isolation has to cover electrical, hydraulic, pneumatic, mechanical, and thermal energy as well as stored energy held in springs, capacitors, and gravity before work starts.

Who is allowed to remove a lockout padlock?

Generally the worker who hung the padlock removes it, unless a documented, supervised procedure applies after that worker is confirmed off-site and cannot be reached.

Which lockout padlocks does this collection carry?

You will find padlocks such as the ABUS 74/40 keyed-different non-conductive locks, the American Lock A1107R red safety padlock, and Brady SafeKey aluminum keyed-different locks.

Do I need written lockout procedures?

You do; OSHA calls for documented energy-control procedures specific to each machine, plus periodic inspections and authorized employees who have been trained.

Are lockout padlocks reusable?

Built to last, these padlocks and the hasps that pair with them are reusable over many service jobs, while warning tags are normally single-use and replaced each time.