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Home > Products > All Collections > Lifting Chains, Slings & Fittings > Grade 80 Chain Fittings > Forged Steel Self-locking Hooks EN 1677-3 > Grade 80 Swivel Self Locking Hook SSK type
  • Grade 80 Swivel Self Locking Hook SSK type
  • Grade 80 Swivel Self Locking Hook SSK type
  • Grade 80 Swivel Self Locking Hook SSK type
  • Grade 80 Swivel Self Locking Hook SSK type

Grade 80 Swivel Self Locking Hook SSK type

No.502006

The Grade 80 Swivel Self-Locking Hook (SSK Type) is a highly reliable rigging component essential for chain sling assemblies requiring secure load capture. It features a versatile swivel eye and an automatic locking mechanism, making it ideal for demanding industrial and construction lifting tasks.

  • 360° Positioning: Features a swivel eye that allows for full 360-degree rotation, enabling precise positioning and alignment of the hook prior to lifting operations.
  • Automatic Locking: Equipped with a heavy-duty latch that automatically closes when tension is applied and securely remains locked under load, preventing accidental release.
  • High-Strength Forging: Manufactured from premium quenched and tempered Grade 80 alloy steel in strict compliance with European EN 1677 safety standards.
  • Certified Safety & Durability: Rigorously proof-load tested to 2.5 times the Working Load Limit (WLL) with a reliable 4:1 safety factor, and treated with a durable, corrosion-resistant powder coating.
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  • Technical Data

  • G-80 Alloy Fittings

Grade 80 Swivel Self-Locking Hook - SSK Type

Automatic Safety Lock with Positioning Swivel
Grade 80 Alloy Steel Positioning Swivel Automatic Locking EN 1677-3
Grade 80 Swivel Self-Locking Hook Product Shot

*Swivel eye for easy alignment (Positioning Only)

Product Features

  • Automatic Locking: The hook automatically closes and locks as soon as the load is lifted. It cannot open under load, providing maximum safety for critical overhead operations.
  • Swivel Positioning: The rotating eye aligns the hook with the load point before lifting. This prevents the chain or wire rope sling from twisting or kinking during setup.
  • Trigger Release: Features a recessed trigger mechanism that is easy to operate (even with gloves) when releasing the load, but fully protected against accidental activation.
  • Rotation Note: This is a Positioning Swivel. It is designed to align the hook, NOT to rotate continuously while under full load (for that application, use the Bearing Swivel SSB type).
The Ultimate Hook Choice
Feature Standard Hook Swivel Self-Locking (SSK)
Safety Latch Spring Latch
(Can break/bend)		 Positive Lock
(Fail-safe mechanism)
Twist Prevention Fixed Eye
(No rotation)		 360° Swivel
(Easy alignment)
Performance Basic Lifting Premium / High Hazard

Technical Specifications

Item No. Chain Size
(mm)		 WLL
(t)		 Main Dimensions (mm) Weight
(kg)		 Product Code
B C D L Φ E
8-SSK-06 6 1.12 32.5 25.5 12 172.5 34 32 0.71 502006006
8-SSK-08 7+8 2 36 29.5 13 215.5 44 40 1.15 502006008
8-SSK-10 10 3.15 42 35 15 253 58 48 1.86 502006010
8-SSK-13 13 5.3 50 41 16 307 70 57 3.51 502006013
8-SSK-16 16 8 61 58 23.5 391.5 86 65 7.33 502006016
8-SSK-20 20 12.5 72 63 26 426 97 82 10.30 502006020
8-SSK-22 22 15 97 98 31 531 98 85 17.50 502006022
8-SSK-26 26 21.2 123 115 42 619 110 109 23.00 502006026
8-SSK-32 32 31.5 140 147 52 778 164 131 81.00 502006032
Grade 80 Chain Fittings

G-80 Alloy Fittings / Grade 80 Sling Components

Grade 80 Sling Components are the long-established industry standard for chain slings and heavy lifting. Fully compliant with international lifting regulations and designed for durability.

What Does “Grade 80” Mean?

  • High-strength Alloy Steel
  • Min breaking force ≈ 4 × WLL
  • Heat-treated (Quenched & Tempered)
  • Standard: EN 818-4 / EN 818-6
  • Marked “G80” or “8”

Common Grade 80 Components

1. Master Links

Used to connect the sling to a crane or hoist hook.

  • Master Link (ML)
  • Master Link Assembly (Multi-leg)
  • Pear-shaped master links

2. Hooks

End fittings for secure load attachment.

  • Clevis Self-Locking Hook
  • Eye Self-Locking Hook
  • Sling Hook with Safety Latch
  • Foundry Hook
  • Grab Hook (Shortening)

3. Connecting Links

Essential hardware to join chains or fittings.

  • Clevis Connecting Link
  • Hammerlock / Coupling Link
  • Repair Link (Special use only)

4. Chain & Adjusters

The core lifting medium and adjustment tools.

  • Grade 80 Alloy Chain (Marked G80)
  • Shortening Clutch
  • Swivel (Bearing/Non-bearing)
  • Lifting Rings

Typical Applications

  • Chain slings (1 to 4 legs)
  • Construction & Civil Works
  • Manufacturing & Workshops
  • Steel Fabrication
  • General Industrial Lifting

Identification Marks

  • Grade: G80 / 8
  • Manufacturer’s ID
  • Size or WLL (Working Load Limit)
  • Traceability Batch Code

Grade 80 vs. Grade 100

Feature Grade 80 Grade 100
Strength Level Standard Industry Standard +25% Higher
Component Size Larger Smaller (for same WLL)
Weight Heavier Lighter
Cost More Cost-Effective Higher

⚠️ Safety & Compatibility Notes

  • DO NOT mix Grade 80 components with other grades (G70, G100) in the same sling leg.
  • Always match Grade 80 chain with Grade 80 fittings.
  • Observe sling angle factors and WLL reductions during lifts.
  • Inspect regularly for: Wear (>10%), Cracks/Distortion, Corrosion, or Heat Damage.

Why Choose Grade 80?

✅ Proven Reliability ✅ Wide Availability ✅ Cost-Effective ✅ Global Acceptance
Grade 80 Chain Sling Assembly

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