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Master Lock 497A Laminated Lockout Tags — Do Not Operate, 12-Pack
$16.39
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EDITORIAL REVIEW: 4.5/5 — WC Safety Review of the Master Lock 497A, DANGER Do Not Operate lockout tags. Editorial assessment by Steven Eaton, WC Safety editor, based on the published Master Lock listing and OSHA 29 ...
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EDITORIAL REVIEW: 4.5/5 — WC Safety Review of the Master Lock 497A, DANGER Do Not Operate lockout tags.
Editorial assessment by Steven Eaton, WC Safety editor, based on the published Master Lock listing and OSHA 29 CFR 1910.147. We did not laboratory-test this product.
Editorial assessment by Steven Eaton, WC Safety editor, based on the published Master Lock listing and OSHA 29 CFR 1910.147. We did not laboratory-test this product.
The Master Lock 497A is a 12-pack of laminated DANGER Do Not Operate safety tags built to survive tough conditions — a tag warns and identifies a lockout; it is not a physical lock and does not replace one where a lock can be applied.
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Why the Master Lock 497A identifies every lockout
A tag that smears or tears in the field stops communicating, which is why lamination matters. The Master Lock 497A brings laminated DANGER Do Not Operate tags from a trusted safety brand, so the warning and the write-on details stay legible through grease, moisture, and handling. As lockout tags go, this is the durable laminated pick, and the complete LOTO guide and the best kits guide put it in context. It keeps the warning legible where plain tags fail.
Safety first: a lockout tag warns and identifies a lockout, but hardware is only half the job — OSHA 29 CFR 1910.147 requires a written energy-control procedure and a verified zero-energy state. After locks and tags are applied you must test to confirm a zero-energy condition (the try-out step) before any work begins; this device does not make a program compliant without a documented procedure, authorized-worker training, and verification. Never remove another worker's lock.
What the Master Lock 497A listing documents
From the published listing: a laminated durable construction; a DANGER Do Not Operate warning; a 12-pack quantity; and alignment to OSHA 29 CFR 1910.147. These are true do not operate tags and lockout tags credentials as a danger tags. Confirm the wording, material, and attachment on the listing. Remember that under the standard it is the written procedure, the authorized-worker training, and the verification step — not the hardware alone — that make a lockout defensible in an audit, so treat this device as one documented part of that larger program rather than a stand-alone solution.
How the Master Lock 497A compares to other lockout hardware
Weigh it against the Accuform TAR404 tags, the TRADESAFE tags, the Master Lock 410GRN, the TRADESAFE TS1KD10R, the WUWEOT hasp. The best padlocks guide ranks the field.
Choosing the right lockout hardware
Effective energy control matches the device to the energy type: padlocks and hasps for breakers and valves that accept a lock, cable lockouts for multi-point or oversized geometry, plug lockouts for cord-and-plug equipment, and tags to identify every isolation and the worker who applied it. Build the full kit around the device so a technician is never missing the one piece a machine needs. Browse the lockout/tagout, lockout padlocks, lockout hasps, cable lockouts, plug lockouts, lockout tags collections; and read the OSHA PPE requirements guide and the NFPA 70E arc-flash guide for the electrical energy control that many lockouts also involve.
Where it fits by application and crew orders
The 497A suits wet, greasy, or outdoor lockouts where a plain card tag would not survive the shift — Browse the wider lockout/tagout range, keep it organized on a TRADESAFE station or TAEGIQ station, and choose laminated tags wherever conditions would degrade plain stock. For crew orders, quantity purchasing runs through a free Amazon Business account — volume pricing, PO numbers at checkout, and tax-exempt eligibility for qualifying organizations, with the walkthrough linked in our footer.
What OSHA actually requires of a lockout device
Lockout/tagout is governed by OSHA 1910.147, the control of hazardous energy, and the standard is unusually specific about the hardware. Devices must be durable enough for the environment, standardised within the facility by color, shape or size, substantial enough that removal requires excessive force or tools, and identifiable — they must name the worker who applied them.
The rule that catches people out is exclusive use: lockout devices may not be used for anything else. A padlock that also secures a gate or a toolbox is not a compliant lockout device, whatever its build quality. Keyed-different is the norm so no one can remove another worker's lock; keyed-alike sets exist for single-authorised-employee programmes and group lockout boxes, and choosing the wrong keying defeats the point of the standard.
Hardware is the smallest part of compliance. 1910.147 also requires written energy-control procedures, periodic inspection and authorised-employee training.
Frequently asked questions
What is the Master Lock 497A?
A 12-pack of laminated DANGER Do Not Operate safety tags built for durability in tough conditions, aligned to OSHA 29 CFR 1910.147.
Is a tag the same as a lock?
No. A lock physically prevents operation (lockout); a tag warns and identifies (tagout). Where an energy-isolating device can accept a lock, the standard expects a lock. Use a tag alone only where a device cannot be locked, with additional means of protection.
What does the tag say?
It carries a DANGER 'Do Not Operate' warning and space to identify who applied it and why. Confirm the exact wording and write-on area on the listing.
How does it attach?
Tags attach with a self-locking nylon tie or the included fastener so they cannot be removed casually. Confirm the attachment method on the listing.
Are they weatherproof?
Confirm the material and any lamination on the listing; laminated or plastic tags hold up better in wet, greasy, or outdoor conditions than plain card stock.
How many come in the pack?
A 12-pack of laminated DANGER Do Not Operate safety tags built for durability in tough conditions, aligned to OSHA 29 CFR 1910.147.
Who fills out the tag?
The authorized worker who applies the lockout signs and dates the tag so anyone can identify the responsible person. Never remove or bypass another worker's tag.
What pairs with it?
Lockout padlocks and hasps to physically lock the point, plus a lockout station to keep tags, locks, and hasps organized. Confirm compatibility on each listing.
Is it OSHA compliant?
Tags support OSHA 29 CFR 1910.147. A tag is one part of a program; it does not replace the written procedure, training, physical locks where possible, or verification. Confirm details on the listing.
How do I store them?
Keep a supply at each lockout station so a worker never skips the tag for lack of one, and replace faded or damaged tags.
Does using tags make me compliant?
No - hardware is necessary but not sufficient. Compliance requires a written procedure, authorized-worker training, application of locks and tags, and verification of a zero-energy state before work.
How do I order for a crew?
Quantity purchasing runs through a free Amazon Business account - volume pricing, PO numbers at checkout, and tax-exempt eligibility for qualifying organizations. The bulk-ordering walkthrough is linked in our site footer.
Brand / Vendor
Master Lock
Model / SKU
—
Product Type
Lockout Tag
Price
$16.39 (Amazon)
Availability
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Frequently Asked Questions
What is the Master Lock 497A?
A 12-pack of laminated DANGER Do Not Operate safety tags built for durability in tough conditions, aligned to OSHA 29 CFR 1910.147.
Is a tag the same as a lock?
No. A lock physically prevents operation (lockout); a tag warns and identifies (tagout). Where an energy-isolating device can accept a lock, the standard expects a lock. Use a tag alone only where a device cannot be locked, with additional means of protection.
What does the tag say?
It carries a DANGER 'Do Not Operate' warning and space to identify who applied it and why. Confirm the exact wording and write-on area on the listing.
How does it attach?
Tags attach with a self-locking nylon tie or the included fastener so they cannot be removed casually. Confirm the attachment method on the listing.
Are they weatherproof?
Confirm the material and any lamination on the listing; laminated or plastic tags hold up better in wet, greasy, or outdoor conditions than plain card stock.
How many come in the pack?
A 12-pack of laminated DANGER Do Not Operate safety tags built for durability in tough conditions, aligned to OSHA 29 CFR 1910.147.
Who fills out the tag?
The authorized worker who applies the lockout signs and dates the tag so anyone can identify the responsible person. Never remove or bypass another worker's tag.
What pairs with it?
Lockout padlocks and hasps to physically lock the point, plus a lockout station to keep tags, locks, and hasps organized. Confirm compatibility on each listing.
Is it OSHA compliant?
Tags support OSHA 29 CFR 1910.147. A tag is one part of a program; it does not replace the written procedure, training, physical locks where possible, or verification. Confirm details on the listing.
How do I store them?
Keep a supply at each lockout station so a worker never skips the tag for lack of one, and replace faded or damaged tags.
Does using tags make me compliant?
No - hardware is necessary but not sufficient. Compliance requires a written procedure, authorized-worker training, application of locks and tags, and verification of a zero-energy state before work.
How do I order for a crew?
Quantity purchasing runs through a free Amazon Business account - volume pricing, PO numbers at checkout, and tax-exempt eligibility for qualifying organizations. The bulk-ordering walkthrough is linked in our site footer.