Is the Brady SafeKey ALU-PRP-38ST-KD the right lockout/tagout padlock for personal, one-worker energy control in a color-coded LOTO program?

Short answer: If you need a personal, keyed-different padlock that holds an isolation point in the safe position under OSHA 29 CFR 1910.147, the SafeKey ALU-PRP-38ST-KD is a sound, name-brand choice — its purple aluminum body suits programs that color-code lockout padlocks by trade, shift, or department. It ships keyed different, so one worker controls the only key to their own lock, which is the foundation of compliant lockout/tagout. Buy single purple locks like this when you are assigning a unique color to a crew; if you just need bulk red personal locks, a 10-pack is the cheaper path.

Brady SafeKey ALU-PRP-38ST-KD Review (2026)

In a lockout/tagout program, this padlock does one job and does it well: it holds an energy-isolating device — a breaker, valve, or disconnect — in the safe position so equipment cannot be re-energized while a worker is exposed to the hazard. The SafeKey ALU-PRP-38ST-KD is a personal energy-control lock, not a security padlock, and it sits at the device layer of a complete program alongside lockout hasps for group work, cable lockouts for awkward geometry, lockout tags to identify the worker, and lockout stations to stage it all. Because it ships keyed different, every lock in the program carries its own unique key — the right configuration when each authorized employee must control the key to their own padlock. The purple body lets a facility reserve a color for one trade or shift, which is exactly the kind of standardized, identifiable device OSHA 29 CFR 1910.147 calls for. If you are deciding between this and other lockout padlocks, our guide to choosing a lockout padlock walks through the body, color, and keying decisions.

Editorial verdict — 4.5/5
For a name-brand, keyed-different personal lock in an uncommon color, the SafeKey ALU-PRP-38ST-KD earns its place — you pay a single-lock, premium-brand price for color discipline and a unique key, which is well worth it when purple is reserved for a specific crew.VIEW ON WC SAFETY →CHECK PRICE ON AMAZON →

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Who it is for

• Electricians and maintenance techs who need a personal keyed-different lock they alone can remove from an isolation point
• Safety managers standardizing lockout padlocks by color who want purple reserved for a specific trade or shift
• Facilities teams building out a color-coded program who pair single locks with lockout stations and tags
• Contractors who must bring their own OSHA-compliant personal lock onto a host site and want a distinct color
• Multi-trade plants that already run red and yellow locks and need a third color to separate crews on shared hasps
• Buyers comparing it against the blue SafeKey or black SafeKey to fill out a color set

What the Brady SafeKey ALU-PRP-38ST-KD does well

Keying built for personal control

Shipping keyed different means this lock's key opens this lock and no other — the exact configuration the one-worker-one-lock-one-key rule demands. Each authorized employee retains sole control of their key, so equipment cannot be re-energized while they are exposed. For per-worker issuance that is precisely what you want from a lockout padlock.

Color discipline for crew separation

Purple is uncommon, which is the point: it lets a facility reserve a color for one trade, shift, or department without colliding with the red and yellow locks already in circulation. On a shared hasp, a purple body tells a supervisor at a glance whose lock is on the isolation point. That standardized, identifiable look is what OSHA 29 CFR 1910.147 asks of a lockout device.

Lightweight aluminum for daily carry

The aluminum body keeps the lock light on a tool belt across a full shift, which matters when a tech carries several locks plus a tag and other devices. Lighter locks get carried and used; heavy ones get left behind. It is the same aluminum-platform advantage seen across the SafeKey line.

Recognized brand on the hasp

Brady is a known industrial-safety name, so the lock reads as a lockout device to any worker who encounters it — useful in mixed workforces and with rotating contractors. That recognition is a practical safety benefit, the same reason facilities value a known brand like Master Lock on the wall. Pair it with our choosing guide when standardizing.

Where the Brady SafeKey ALU-PRP-38ST-KD falls short

Premium single-lock price

As a name-brand single padlock, the per-unit cost runs higher than economy multi-packs. If you simply need a stack of personal locks in the universal warning color, a 10-pack of red keyed-different locks or the ABUS 74/40 10-pack will cost far less per lock. The purple SafeKey earns its price on color discipline, not on bulk value.

No stated dielectric rating

The listing describes an aluminum body and color but does not state a non-conductive/dielectric rating. For live electrical isolation under 1910.333 where a non-conductive lock is specified, confirm Brady's spec or choose a lock the listing explicitly calls non-conductive, such as the ABUS 74/40. Do not assume a rating that is not published.

Keyed different adds key management

Unique keys are the strength here, but they are also more keys to track. A single authorized worker managing many isolation points at once may find a keyed-alike set faster, since one key opens the whole group. Match the keying to who controls the lock, as our LOTO basics explains.

One device, not a kit

This is a single padlock — a complete personal program also needs hasps for group lockout, tags to identify the worker, and ideally a station to stage gear. If you want it all bundled, a personal LOTO kit is a better starting point.

Brady SafeKey ALU-PRP-38ST-KD vs the competition

Compare prices on Amazon →Brady SafeKey ALU-PRP-38ST-KD on Amazon[Brady SafeKey ALU-BLU

When to step up from the Brady SafeKey ALU-PRP-38ST-KD

If your isolation points are deep hasps, scissor clamps, or stacked hasps that a standard shackle cannot span, step up to the long-shackle ABUS 2ALHB/40-75 — and note it ships keyed alike, so one worker can hold several points on a single key. If you need locks the listing explicitly calls non-conductive for electrical LOTO, the ABUS 74/40 10-pack is the better-documented choice. And if you would rather buy the whole personal set at once, the Brady 123143 compact kit bundles padlock, hasp, and tags in one pouch.

Category context

A padlock, a hasp, a cable lock, and a kit do different jobs in a program, and choosing the wrong one is a common mistake. A lockout padlock like this purple SafeKey locks a single isolation point for a single worker. A hasp turns one isolation point into a group lockout, accepting multiple padlocks so several workers each apply their own lock. A cable lockout handles valve wheels and oversized switches a rigid shackle cannot reach. A kit or station stages and stores the devices. Keying matters just as much: keyed different (KD) — what this lock is — gives every lock a unique key for per-worker control, while keyed alike (KA) lets one key open a matched set, which suits a single worker holding several points. And remember a tag is not an energy-isolating device: a lockout tag identifies the worker, but the padlock is what holds the energy in the safe position. Our LOTO walkthrough shows how these pieces fit together.

Total cost of ownership

On total cost, the single-lock SafeKey is a premium per-unit buy, and that is the honest trade-off: you pay for a recognized brand, an aluminum body, and an uncommon color. Where it pays back is durability and standardization — a lockout padlock that holds up and is instantly identifiable rarely needs replacing, and color discipline reduces costly confusion on a shared hasp. If your program needs volume rather than a unique color, pack economics flip the math hard: a TRADESAFE 10-pack or yellow 10-pack equips a full crew for a fraction of the per-lock cost. Budget by role: single distinctive locks for color-coded trades, bulk packs for general personal issuance, and a station to keep them controlled. The choosing guide helps you split the order sensibly.

Final verdict

Buy the Brady SafeKey ALU-PRP-38ST-KD when your program color-codes lockout padlocks and you need purple reserved for a specific trade, shift, or department, with each worker holding their own unique key under OSHA 29 CFR 1910.147. If you just need bulk personal locks in the universal warning color, choose a TRADESAFE 10-pack or the ABUS 74/40 10-pack instead. For deep or stacked hasps, step to the long-shackle ABUS 2ALHB/40-75; for the full personal set in one pouch, the Brady 123143 kit is the cleaner start. Whatever you pick, anchor the decision in how to choose a lockout padlock.

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Brady SafeKey ALU-PRP-38ST-KD FAQ

Is the Brady SafeKey ALU-PRP-38ST-KD OSHA compliant for lockout/tagout?

Yes — it is a personal lockout padlock built for energy control under OSHA 29 CFR 1910.147, holding an isolation point in the safe position so equipment cannot be re-energized. As a keyed-different lock it supports the one-worker-one-lock-one-key requirement directly. Compliance also depends on your written program and procedures, not the lock alone.

What does keyed different (KD) mean on this padlock?

Keyed different means this lock's key opens this lock and no other — every lock in the program carries its own unique key. That is the correct configuration when each authorized employee must control the only key to their own lockout padlock. It contrasts with keyed alike, where one key opens a matched set.

When should I choose keyed alike instead of keyed different?

Choose keyed alike when a single authorized worker manages several isolation points at once and wants one key to open them all, such as the ABUS 2ALHB/40-75. Keyed different, like this SafeKey, is the default for per-worker personal control where no one else can remove your lock. Our LOTO basics explains the distinction.

Why is this lock purple instead of red?

Purple is an uncommon color a facility can reserve for one trade, shift, or department in a color-coded program. Red is the universal warning color, but plants that already run red and yellow often need a third color to separate crews on a shared hasp. Standardized, identifiable colors are what OSHA 1910.147 expects of lockout devices.

Is the SafeKey ALU-PRP-38ST-KD non-conductive for electrical work?

The listing states an aluminum body and color but does not publish a dielectric/non-conductive rating, so do not assume one. For live electrical isolation where a non-conductive lock is specified, confirm Brady's spec or pick a lock the listing explicitly calls non-conductive, such as the ABUS 74/40. See lockout vs tagout for where electrical rules apply.

How does this compare to the blue SafeKey ALU-BLU-38ST-KD?

They are the same SafeKey aluminum platform, keyed different, differing only in color — purple versus blue. Pick the color your program assigns to the crew or shift in question. Many facilities buy both to build out a color set across lockout padlocks.

How does it compare to the American Lock A1107R?

The American Lock A1107R is a red single safety padlock for general personal control, while this SafeKey is a purple aluminum lock for color-coded assignment. Choose the A1107R if you want the universal red; choose the purple SafeKey when you are reserving a distinct color for a trade. Both are keyed for personal control under 1910.147.

Is a single SafeKey better than a 10-pack?

It depends on the job. A single lock like this is right when you are issuing one distinctive color to a specific crew; a TRADESAFE 10-pack or ABUS 74/40 10-pack is far cheaper per lock for bulk personal issuance. Budget single distinctive locks for color-coded trades and packs for general issuance.

Can multiple workers lock out the same machine with this padlock?

Each worker applies their own personal padlock, but a single isolation point only accepts one lock unless you add a lockout hasp. The hasp turns one point into a group lockout so several workers each clip their own lock. The energy stays isolated until the last worker removes the last lock, as our LOTO procedure describes.

Does a lockout tag replace this padlock?

No — a lockout tag identifies the worker and communicates the hazard, but it is not an energy-isolating device. The padlock physically holds the isolation point in the safe position; the tag rides with it. Tagout-only is a weaker control, which our lockout vs tagout guide explains.

What if my hasp is too deep for the standard shackle?

If a standard shackle cannot span a deep, scissor-clamp, or stacked hasp, step up to a long-shackle lock such as the ABUS 2ALHB/40-75. The listing for this SafeKey does not state shackle clearance, so confirm fit before relying on it for unusually deep points. Match the lock to the geometry.

Is aluminum durable enough for daily LOTO use?

Aluminum bodies are chosen because they are light for all-shift carry while staying corrosion-resistant, and a light lock is one that actually gets carried and used. For most general-industry isolation points the SafeKey aluminum platform holds up well. If you face heavy abuse, compare against steel-bodied options like Master Lock using our choosing guide.

Do I need a lockout station to use this padlock?

Not to use a single lock, but a lockout station keeps padlocks, hasps, and tags organized and controlled, which is best practice for a program of any size. Stations make it obvious when a lock is in use versus available. Pair single distinctive locks with a station as your program grows.

How many of these should I order?

Order one per worker who is assigned the purple color, plus controlled spares stored per your program. If you are equipping a whole general crew rather than a color-coded trade, a 10-pack is more economical. Size the order to roles, not to a flat headcount.

Where does this lock fit among WC Safety's lockout padlocks?

It sits in the single-padlock, color-coded tier alongside the blue SafeKey, black SafeKey, and American Lock A1107R, as opposed to the bulk 10-packs and the cable locks. Browse the full lockout/tagout range to compare formats. Start with our choosing guide if you are new to the category.

Can a contractor use this lock on a host site?

Yes — contractors are expected to bring OSHA-compliant personal locks, and a distinctly colored, keyed-different lock like this makes a contractor's lock easy to identify on a shared hasp. Coordinate your color and keying with the host facility's program first. The LOTO procedure covers contractor coordination.

What is the difference between this padlock and a cable lockout?

This padlock locks a hasp or disconnect that accepts a rigid shackle, while a cable lockout like the QWORK QS8899 threads a flexible cable around valve wheels and oversized switches a shackle cannot reach. Many programs carry both. Choose by the geometry of the isolation point you face.