Product Introduction
Anti-Rust & Salt-Water Ready
Marine-grade precision-investment-cast 316 stainless steel, molybdenum-enhanced for lifelong immunity to salt-spray, brine and coastal humidity.
Heavy-Duty Backbone
8 mm solid forged gate + 5 mm U-frame—thicker than market average—handles dynamic shock loads up to 600 kg without permanent deformation.
One-Handed Quick-Release
Spring-loaded 90° gate opens under 2 kg finger pressure, yet self-locks under load; no accidental release even in 100 km/h wind gusts.
Compact Footprint
4-inch (102 mm) overall length fits crowded pulpits, T-tops and radar arches where every centimetre counts.
⚙️ Technical Parameters
| CODE | A (mm) | B (mm) | C (mm) | D (mm) | E (mm) | F (mm) | WT (kg) |
| ZB6109-4 | 100.0 | 20.0 | 10.0 | 9.0 | 4.5 | 23 | 0.090 |
✨ Product Advantage
| Advantage | Description |
| Salt & Brine Immunity | 316 Mo-content resists pitting/crevice attack during continuous salt-water immersion. |
| One-Piece Cast Gate | Zero weld seams = zero weak points; keeps shape after years of shock loading. |
❓ FAQ
Q1: Can I use this hook for overhead lifting?
A: SWL 600 kg is for in-line pull; reduce to 400 kg if gate side-load exceeds 15°.
Q2: How often should I rinse after salt water?
A: Fresh-water rinse after every voyage; periodic wipe with pH-neutral stainless polish keeps mirror finish.
Q3: Will the spring weaken in cold climates?
A: 316 stainless torsion spring rated –40 °C to +80 °C; torque loss < 5 % after 50 000 cycles.
Q4: Can I replace the gate spring myself?
A: Yes—M3 hex key removes pivot pin; spare spring kit (part no. ZB1904-SP) included in service pack.
Q5: Is the hook compatible with 1-inch webbing?
A: 18 mm gate clearance accepts flat webbing up to 25 mm; chafe sleeve recommended for Dyneema® loops.
Packing & Delivery
Exhibition
