Gunnebo GBK Grade 100 Self-Closing Hook
- Proof-load tested on request, up to 1,200 T
- Test certificate with every item
- IRS · ABS · LRS · BV certification
- Price, stock and lead time within one working day
Gunnebo GBK Grade 100 Self-Closing Hook, working load limit 1.5 t to 10.3 t, 6 sizes.
Request a quote
Price, stock and lead time by email, usually within one working day. Ask for test certificates with your enquiry.
The Gunnebo GBK series is a line of forged alloy clevis safety hooks designed for direct attachment to Grade 100 or Grade 80 lifting chain. These hooks feature a heavy-duty clevis connector that helps prevent mismatched chain connections, and each is equipped with the Gunnebo GripLatch—a self-closing, spring-loaded latch that locks automatically under load and offers quick visual confirmation that the hook is securely closed. The interlocking design between the latch and hook bowl adds extra protection against side impacts and accidental disengagement.
Key Features
Clevis connection for direct chain attachment with no intermediate link required
GripLatch system locks under load and stays closed until released when unloaded
Latch interlocks with hook body for added impact resistance
Heat number stamped for full product traceability
Made from quenched and tempered Grade 100 alloy steel
Proof tested to 2.5x working load limit and fatigue rated to 20,000 cycles
Complies with EN 1677:2008 (+25% WLL), ASTM A952/A952M, and AS 3776:2015
4:1 design factor for lifting safety
Product Range
Working Load Limits from 3,306 lbs to 22,600 lbs
Fits chain sizes from 7/32" to 5/8"
For use with Grade 100 or Grade 80 chain sling assemblies
Built for demanding lifting applications, the Gunnebo GBK is the go-to safety hook when you need a strong, chain-connected solution with a reliable self-locking latch and rugged durability.
Sizes and working load limits
| Size | Size (mm) | Working load limit | Gunnebo part no. | Enquire |
|---|---|---|---|---|
| 7/32" | 5.6 | 1.5 t | Z100758 | |
| 9/32" | 7.1 | 2.04 t | Z100849 | |
| 5/16" | 7.9 | 2.59 t | Z100759 | |
| 3/8" | 9.5 | 3.99 t | Z100760 | |
| 1/2" | 12.7 | 6.8 t | Z100761 | |
| 5/8" | 15.9 | 10.3 t | Z100762 |
Prices, stock and lead times on request. Every item can be supplied with a test certificate; proof-load testing in our own test house on request.
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Need a price, stock check or certificates?
Add sizes to your enquiry list, or send us the load and application — we reply within one working day.