The Yale CMHAZ023 Light Alloy Snap Hook is a large-gate connector with a 60 mm gate opening, designed for connection to structural elements too large for a standard 18 mm hook — scaffold tubes, structural steel sections or large anchor eyes. Constructed from light aluminium alloy for reduced weight compared to a steel hook of equivalent gate opening, it is EN 362 compliant and rated to a minimum strength of 22 kN. Manufactured by Columbus McKinnon under the Yale brand, supplied with a test certificate.
Key Features
- 60 mm gate opening — accepts scaffold tubes, structural steel sections, and large anchor eyes
- Light alloy construction — approximately 30–40% lighter than a steel hook of equivalent gate opening
- Minimum strength 22 kN — rated for fall arrest applications along the major axis
- EN 362 Class B compliant — basic connector for personal fall protection
- Self-acting locking — spring-loaded gate self-closes once released
- Suitable for scaffold tubes — fits standard 48 mm scaffold tubes with margin for safe gate clearance
- Supplied with test certificate — ready for use as part of a fall protection system
Technical Specifications
| Model |
Part Number |
Gate Opening |
Material |
Standard |
| CMHAZ023 |
N4300008257 |
60 mm |
Light alloy (aluminium) |
BS EN 362 Class B |
Large gate opening accepts scaffold tubes, structural steel sections, and large anchor eyes. Light alloy construction reduces weight compared to steel hooks.
CMCO Group | EN ISO 9001 Certified | EN 362 Compliant | CE Marked
This product is manufactured by Columbus McKinnon under the Yale lifting brand to EN ISO 9001 quality management standards. Compliant with BS EN 362 for personal fall protection connectors, Class B (basic connectors). Supplied with a manufacturer's test certificate and CE Declaration of Conformity. PPE Regulation (EU) 2016/425 Category III. LOLER 1998 thorough examinations are required every 6 months by a competent person.
Suitable Applications
Used where the anchor or attachment point is too large for a standard 18 mm hook — scaffold tubes, structural steel sections, large anchor eyes, master links. The light alloy construction also makes it suitable for applications where reducing the user's carried weight is important.
How to Use the Light Alloy Snap Hook
- Inspect the connector before each use — body for distortion or cracks, gate for free operation, locking mechanism for correct function.
- Open the gate.
- Position the connector around the attachment point.
- Release the gate — the spring-loaded gate will self-close.
- Verify the gate is fully closed and locked before applying load.
- Verify the connector is loaded along the major axis — not side-loaded or three-way loaded.
Warning:
Always verify the gate is fully closed and locked before applying load. Never load across the gate (minor axis). Light alloy connectors can lose strength faster than steel if subjected to impact damage — withdraw immediately if any dents or distortion are found.
Safety Information
- Always inspect the connector visually and by hand before each use.
- Verify the gate operates freely and locks fully closed.
- Verify no distortion, cracking, or wear on the body, gate, or pivot.
- Withdraw from service if any damage or excessive wear is found.
- Always load along the main axis — side-loading or three-way loading drastically reduces strength.
- Never modify or attempt to repair the connector.
- Match the connector to the rated strength of the system it connects.
- Withdraw immediately if any impact damage, dents, or distortion is found — light alloy is less impact-tolerant than steel.
Inspection and Maintenance
Inspect for distortion, cracks, gate function, and wear before each use. Clean using warm water and mild detergent only. Air-dry. Lubricate the gate spring sparingly with a light dry lubricant if the gate becomes stiff. Store in a clean, dry place away from corrosive chemicals. Thorough examination by a competent person every 6 months. Service life depends on use intensity — withdraw immediately if any damage is found.
Downloads
Frequently Asked Questions
Q: When should I choose the light alloy hook over the steel CMHAZ011?
Choose the light alloy hook when the gate opening of the steel hook (18 mm) is too small for the attachment point — for example connecting directly to a scaffold tube (48 mm), structural steel section, or large anchor eye. Also choose light alloy when reducing carried weight on the harness is important.
Q: Is light alloy as strong as steel?
The CMHAZ023 light alloy hook is rated to the same minimum strength as the standard steel snap hook (22 kN along the major axis). However, light alloy is less tolerant of impact damage — inspect carefully and withdraw at the first sign of impact or distortion.
Q: Does the gate self-lock?
Yes. The spring-loaded gate self-closes when released. Always verify the gate is fully closed before applying load.
Q: Will the hook fit standard scaffold tubes?
Yes — the 60 mm gate opening fits standard 48 mm scaffold tubes with margin for safe gate clearance.
Q: Can I use the light alloy hook for any height safety application?
Yes, provided the gate opening is appropriate for the attachment point and the connector is loaded along the major axis. EN 362 Class B basic connector.
Q: How often must the connector be inspected?
Pre-use inspection by the operator, thorough examination by a competent person every 6 months. Inspect carefully for impact damage at every check.
Q: Is a test certificate included?
Yes — supplied with each connector.
