Introduction
The hook safety latch is designed per GB/T 24813-2018 and mounted at the hook opening. During lifting, the sling presses the tongue open; after entering the hook cavity, the spring automatically returns to close the mouth, preventing the sling from unhooking during lifting and travel due to swinging. Produced in series by capacity and hook type—common types include double-torsion spring tongue, new steel-bar latch, and plate latch—in galvanized carbon steel, spring steel, or stainless steel, it features easy installation, flexible return, and corrosion resistance, and is a mandatory safety device for crane hooks.
Application
Our Advantage
Spring auto-return closes the mouth, effectively preventing sling release for safe lifting.
Covers 0.75T-100T capacities and hook types with precise matching for easy selection.
Spring steel returns sensitively and lasts long, staying intact through repeated opening.
Bolt or clip-on mounting without hook modification—install and use immediately.
Galvanized or stainless finish resists rust in outdoor and humid environments.
Specification
| Chain Block & Eye Hook Latch Sizes (Reference) | ||
| Capacity | Length (mm) | Application |
| 0.75T | 33 | American eye hook |
| 1T | 38 | Chain block |
| 2T | 45 – 49 | Chain block |
| 3T | 49 – 55 | Chain block |
| 5T | 58 – 65 | Chain block |
| 11T | 76 | Eye hook |
Specification
| Standard Plate Latch Sizes (Reference) | |
| Capacity | Size L×W (mm) |
| 1T | 41 × 12 |
| 2T | 50 × 16 |
| 3T | 57 × 18 |
| 5T | 70 × 18 |
| 10T | 95 × 24 |
| 20T | 115 × 33 |
