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DFARS Specialty Metals
Fusible Links
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Style 1 | Style 2 | Style 3 |
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Style 4 | Style 5 | Style 6 |
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Style 7 | Style 8 | Style 9 |
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Style 10 |
Automatically close fire doors, windows, lids, dampers, vents, and more in the event of a fire. High temperatures melt the solder bond between links, causing them to separate and release their load. Install with S-hooks or chain (not included).
To ensure safety, replace links annually and do not paint or coat them. Use links in straight-pull applications only.
Styles 1-5—Styles 1-5 links are for use on fire doors, windows, and lids.
Styles 6 and 7—Styles 6 and 7 links are often used on fire doors, windows, hatches, dampers, and blowers.
Style 8—Style 8 links are commonly used on fire doors, smoke and heat vents, and ducts.
Style 9—Style 9 links are good for range hood applications.
Style 10—Style 10 links are designed for use on dampers.
Mounting Hole | Overall | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Style | Melting Temp., ° F | Wt. Cap., lb. | Ctr.-to-Ctr. | Dia. | Lg. | Ht. | Certification | Each | ||
| 1 | 135 | 3 to 45 | 5/8" | 1/4" | 1 3/16" | 13/16" | UL Listed | 0000000 | 000000 | |
| 1 | 165 | 3 to 45 | 5/8" | 1/4" | 1 3/16" | 13/16" | UL Listed | 0000000 | 0000 | |
| 1 | 165 | 3 to 45 | 7/8" | 5/16" | 1 3/8" | 7/8" | UL Listed | 0000000 | 0000 | |
| 2 | 165 | 1 to 8 | 7/8" | 3/16" | 1 5/16" | 7/16" | UL Listed | 0000000 | 0000 | |
| 2 | 200 | 1 to 8 | 7/8" | 3/16" | 1 5/16" | 1/8" | UL Listed | 0000000 | 0000 | |
| 3 | 135 | 3 to 10 | 15/16" | 3/16" | 1 3/8" | 1/2" | UL Listed | 00000000 | 0000 | |
| 3 | 135 | 3 to 10 | 15/16" | 1/4" | 1 3/8" | 1/2" | UL Listed | 0000000 | 0000 | |
| 3 | 155 | 3 to 10 | 15/16" | 3/16" | 1 3/8" | 1/2" | UL Listed | 00000000 | 0000 | |
| 3 | 165 | 3 to 10 | 15/16" | 3/16" | 1 3/8" | 1/2" | UL Listed | 0000000 | 0000 | |
| 3 | 165 | 3 to 10 | 15/16" | 3/16" | 3 3/16" | 1/2" | UL Listed | 0000000 | 0000 | |
| 3 | 165 | 3 to 10 | 15/16" | 1/4" | 1 3/8" | 1/2" | UL Listed | 0000000 | 0000 | |
| 3 | 212 | 3 to 10 | 15/16" | 3/16" | 1 3/8" | 1/2" | UL Listed | 0000000 | 0000 | |
| 3 | 212 | 3 to 10 | 15/16" | 1/4" | 1 3/8" | 1/2" | UL Listed | 0000000 | 0000 | |
| 3 | 280 | 3 to 10 | 15/16" | 1/4" | 1 3/16" | 1/2" | UL Listed | 0000000 | 0000 | |
| 4 | 135 | 3 to 20 | 1 5/8" | 3/8" | 2 3/8" | 3/4" | UL Listed | 0000000 | 00000 | |
| 4 | 165 | 3 to 20 | 1 5/8" | 3/8" | 2 3/8" | 3/4" | FM Approved, UL Listed | 0000000 | 0000 | |
| 4 | 212 | 3 to 20 | 1 5/8" | 3/8" | 2 3/8" | 3/4" | FM Approved, UL Listed | 0000000 | 0000 | |
| 4 | 280 | 3 to 20 | 1 5/8" | 3/8" | 2 3/8" | 3/4" | FM Approved, UL Listed | 0000000 | 0000 | |
| 4 | 360 | 3 to 20 | 1 5/8" | 3/8" | 2 3/8" | 3/4" | FM Approved, UL Listed | 0000000 | 0000 | |
| 5 | 165 | 3 to 50 | 1 5/8" | 3/8" | 2 3/8" | 1/8" | UL Listed | 0000000 | 0000 | |
| 5 | 212 | 3 to 50 | 1 5/8" | 3/8" | 2 3/8" | 1/8" | UL Listed | 0000000 | 0000 | |
| 6 | 165 | 1 to 30 | 1 3/4" | 7/16" | 2 1/2" | 3/4" | UL Listed | 0000000 | 00000 | |
| 6 | 212 | 1 to 30 | 1 3/4" | 7/16" | 2 1/2" | 3/4" | UL Listed | 0000000 | 00000 | |
| 7 | 165 | 2 to 60 | 1 3/4" | 7/16" | 2 1/2" | 3/4" | UL Listed | 0000000 | 00000 | |
| 8 | 165 | 5 to 50 | 1" | 1/4" | 1 1/2" | 5/8" | FM Approved, UL Listed | 0000000 | 00000 | |
| 8 | 212 | 5 to 50 | 1" | 1/4" | 1 1/2" | 5/8" | FM Approved, UL Listed | 0000000 | 00000 | |
| 8 | 286 | 5 to 50 | 1" | 1/4" | 1 1/2" | 5/8" | FM Approved, UL Listed | 0000000 | 00000 | |
| 9 | 135 | 10 to 40 | 1 11/16" | 5/16" | 2 1/4" | 13/16" | UL Listed | 0000000 | 00000 | |
| 9 | 165 | 10 to 40 | 1 11/16" | 5/16" | 2 1/4" | 13/16" | UL Listed | 0000000 | 00000 | |
| 10 | 165 | 3 to 10 | 15/16" | 3/16" | 2 3/4" | 1/16" | UL Listed | 0000000 | 0000 | |
| 10 | 165 | 3 to 10 | 15/16" | 3/16" | 3 3/4" | 1/2" | UL Listed | 0000000 | 0000 | |
