Value
At $12 the Master Lock 410 is the right OSHA lockout padlock in 2026.
Master Lock 410 Lockout Tagout Padlock (Red) vs. the competition
| Product | Our rating | Material | Shackle | Origin | Price | Verdict |
|---|---|---|---|---|---|---|
| Master Lock 410 Red | ★★★★★ 4.7 | Thermoplastic | 1-1/2 in | USA | $11 | Editor's Choice |
| Brady BradyLock #410 | ★★★★★ 4.7 | Thermoplastic | 1-1/2 in | USA | $14 | Best Brady Equivalent |
| Master Lock S31 Aluminum | ★★★★★ 4.7 | Aluminum | 1-1/2 in | USA | $18 | Best Aluminum |
| Generic lockout padlock | ★★★★☆ 3.6 | Variable | Variable | Variable | $6 | Skip |
Full specifications
| Color | Red (OSHA-compliant) |
| Body material | Thermoplastic |
| Shackle material | Hardened steel |
| Shackle diameter | 1/4 in |
| Shackle clearance | 1-1/2 in |
| Key system | Keyed-different (option for keyed-alike) |
| OSHA compliance | Yes |
| Made in USA | Yes |
Should you buy the Master Lock 410 Lockout Tagout Padlock (Red)?
The Master Lock 410 is the OSHA-compliant lockout tagout padlock every maintenance worker, electrician, and industrial technician needs. The thermoplastic body resists chemicals and electrical conduction, the hardened steel shackle resists bolt cutters, the OSHA-compliant red color identifies it as a lockout device, and the keyed-different option ensures only the worker who applied the lock can remove it. The trade is the limited shackle range (1-1/2 inch) and a plastic body that wears with very heavy use.
Frequently asked questions
Is the Master Lock 410 worth $12 in 2026?+
Yes for any OSHA-compliant lockout tagout program. The Master Lock brand is universally accepted by OSHA inspectors.
410 vs Brady BradyLock: which should I get?+
Both are OSHA-compliant. Master Lock 410 is the industry standard. Brady is competitive with similar pricing.
Should I get keyed-different or keyed-alike?+
Keyed-different for individual worker control (each worker has their own unique key). Keyed-alike for group locks where any team member can remove. Most lockout programs use keyed-different.
📅 Update log
- May 9, 2026Added 8-month observations.
- Sep 15, 2025Initial review published.
Alex Patel
Alex Patel writes for The Tested Hub.