Tower work has its own geometry. A lattice mast, pylon or telecoms tower is built from angle sections and bracing, and the technician climbing it needs to clip on and off constantly at every level. A tower hook is shaped for exactly those members: a deep, elongated throat that goes over an angle leg or bracing member cleanly, with a double action mechanism that locks itself so nothing is forgotten a hundred feet up.
Key Features
- Shaped for lattice steelwork: The throat geometry suits angle sections and bracing members rather than the round bar and flat plate a general connector expects.
- Double action locking: Locks automatically on closing, releases only through a deliberate two-stage action. Nothing to remember when clipping on repeatedly at height.
- 23 kN breaking strength: Above the EN 362 requirement.
- Class T termination connector: Designed so the load sits in a predetermined direction, which is what keeps a large hook stable and correctly oriented under load.
- Alloy steel construction: Robust enough for the constant clipping onto galvanised steelwork that tower work involves, which is abrasive.
- Category III PPE: Certified under Regulation (EU) 2016/425.
Technical Specifications
| Property |
Value |
| Product Code |
FA 50 213 80 |
| Material |
Alloy steel |
| Breaking Strength |
23 kN |
| Operating Type |
Double action locking |
| Conformity |
BS EN 362 Class T |
| PPE Category |
Category III |
Gate opening is quoted as 50 mm on GT's specification and 85 mm in the supplier description. Confirm against the product before specifying for a particular member size.
BS EN 362 Class T | Double Action Locking | 23 kN | Category III PPE
Conforms to BS EN 362 Class T, the classification for termination connectors designed so the load is applied in a predetermined direction. Double action locking mechanism requires a deliberate two-stage operation to open. Category III personal protective equipment under Regulation (EU) 2016/425, supplied with a Declaration of Conformity. Requires inspection by a competent person at intervals not exceeding 12 months and immediate withdrawal after arresting a fall.
Suitable Applications
Tower hooks are standard equipment for telecoms and broadcast mast work, electricity transmission pylons, lattice tower erection and maintenance, wind turbine internal steelwork, and any structure built from angle and bracing sections. They are typically fitted to the working end of a twin-tail shock absorbing lanyard, so the technician can move up a structure while remaining attached at all times. Where the steelwork is tube or scaffold rather than lattice, a scaffold hook is the correct shape.
More About This Product
Connectors are bought on price more often than any other component in a fall protection system, and they are the component where that is least sensible. A karabiner is the single point through which the entire system passes, and the difference between a good one and a poor one is measured in how the gate behaves after two years on site rather than in how it performs new.
The practical differences show up in use. A gate that is stiff with a glove on gets clipped carelessly. A connector too small for the anchor gets forced. One too large rolls out. None of these is a rating problem, and none of them appears on a spec sheet.
Gate Types, Roll-Out and Choosing by Anchor
Gate mechanism determines how a connector is used in practice. A screwgate is secure and slow, needing a deliberate twist to lock — and it is the one most often left unlocked, because locking it is a separate action nobody sees you skip. A twist-lock or triple-action gate locks automatically, which removes that failure mode entirely at the cost of being fiddlier with heavy gloves.
Roll-out is the failure mode that surprises people. A correctly rated connector can twist and come out of an anchor point that is too wide, too flat or awkwardly shaped, under load, without anything breaking. It is a geometry problem, not a strength problem, and no amount of extra rating prevents it. Where the anchor is a wide flat plate or a large eye, a connector with a captive-eye or a purpose-shaped body is the answer.
Gate opening is the dimension to check before buying a fleet. A connector that will not fit the anchor points on your site is useless whatever its rating, and the discovery is normally made on the day by someone who then improvises.
How to Use the Tower Hook
- Check the member is suitable: Convenience is not the test. The structural member must be capable of withstanding fall arrest forces.
- Clip on and confirm it has locked: Attempt to open the gate without operating the mechanism.
- Let the hook find its orientation: Class T geometry positions the load. Do not force it into an unnatural position.
- Never load the gate.
- Check for roll-out on angle sections: A large hook on an angle leg can rotate into a position where it levers against the steel. Confirm it cannot.
- Keep the mechanism clean: Tower work generates rust scale and grit, and double action mechanisms have more places for it to lodge.
Warning: Category III PPE for trained, competent persons only. Confirm the mechanism has locked after every connection. Check the hook cannot rotate into a position where it could lever open against the steelwork. Withdraw immediately after arresting a fall.
Safety Information
- For use only by trained and competent persons within a safe system of work.
- The structural member must be capable of withstanding fall arrest forces.
- Confirm the gate has locked after every connection.
- Load along the spine. Never load the gate.
- Check the connector cannot lever open against the structure.
- Withdraw if the double action mechanism fails to lock automatically.
- Withdraw immediately after arresting a fall.
- Inspection by a competent person required at intervals not exceeding 12 months.
Inspection and Maintenance
Tower work is hard on connectors. The hook is clipped and unclipped dozens of times a day onto galvanised steel, which is abrasive, and it is exposed to weather constantly. Inspect the throat and gate nose for wear from that repeated contact, and check the double action mechanism by operating it repeatedly: it must lock under its own action every time and require the full two-stage sequence to release. Rust scale and grit work into the pivot, so keep it clean and lightly oiled. Check the body for distortion and confirm the marking remains legible, since abrasion removes marking faster in this application than most.
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Frequently Asked Questions
Q: What makes a tower hook different from a scaffold hook?
Throat shape. A scaffold hook is dimensioned for round tube; a tower hook is shaped for the angle sections and bracing members that lattice structures are built from. A scaffold hook on an angle leg often sits awkwardly and may not seat properly.
Q: Why double action rather than screw gate?
Because on a tower you clip and unclip constantly, often one-handed, at height and in weather. A screw collar is one more thing to remember every single time, and the consequence of forgetting is severe. Double action locks itself.
Q: What is the actual gate opening?
GT's specification says 50 mm while the supplier description says 85 mm. We are confirming this with the manufacturer. If you are specifying for a particular member size, contact us and we will verify before you order.
Q: Tower hook or quarter turn tower hook?
The FA 50 216 55 quarter turn version has a captive pin, which stops the connector rotating and cross loading, and a 55 mm gate. Choose that where the connector stays attached for extended periods; this double action version is quicker for repeated clipping as you climb.
