Name: Grade 100 Eye Self Locking Hook ESK type
Brand: H-Lift Industries Co Ltd
SKU: 505006
Availability: InStock
Rating: 5 (1 reviews)

No.505006

The Grade 100 Eye Self-Locking Hook (ESK Type) is an exceptionally secure bottom hook designed for use on chain slings, wire ropes, and lifting assemblies, ensuring loads remain fully captured during lifting.

Automatic Locking: Features a heavy-duty latch that automatically closes and locks the moment tension is applied, providing maximum safety during overhead lifts.
Trigger Release: Designed so it remains firmly locked under load and requires manual activation of the release trigger when unloaded to open.
Eye Attachment: The top eye shape enables versatile, secure connections to chain slings (using a connecting link) or directly to wire ropes and attachment points.
Grade 100 Strength: Forged and heat-treated from premium alloy steel, delivering at least 25% higher lifting capacity than standard Grade 80 hooks of the same size.

Technical Data
G-100 Alloy Fittings

Grade 100 Eye Self-Locking Hook - ESK Type

Universal Eye Connection with Automatic Locking

Grade 100 Alloy Steel Self-Locking Eye Connection EN 1677-3

*Locks automatically under load for maximum safety

Product Features

Maximum Safety (Self-Locking): Features a mechanism that automatically closes and locks under load. The hook cannot open while lifting, ensuring the load remains secure even if the line goes slack or vibrates.
Eye Type Versatility: Designed with a circular eye connection. This makes it ideal for use with Wire Rope Slings (via thimble), Synthetic Slings (via web connector), or Chain Slings (via Connecting Link).
Grade 100 Strength: Forged from Grade 100 Alloy Steel, offering 25% higher lifting capacity than Grade 80 hooks of the same size.
Recessed Trigger: The release trigger is recessed into the hook body to prevent damage or accidental release in rugged environments.
Large Throat Opening: Engineered to accept a wide range of lifting points and oversized master links.
Standard: Compliant with ASTM A952, EN 1677-3, and proof tested to 2.5x WLL.

Connection Type: Eye (ESK) vs. Clevis (CSK)

Model	Connection	Best Application
Eye Self-Locking (ESK) (This Product)	Universal Eye	Wire Rope / General. Perfect for wire rope thimbles. Needs a Connecting Link to attach to chain.
Clevis Self-Locking (CSK) (Alternative)	Direct Pin	Chain Only. Connects directly to G100 chain links. More compact (no extra connector needed).

Technical Specifications

Item No.	Chain Size (mm)	WLL (ton)	Main Dimensions (mm)							Weight (kg)	Product Code
Item No.	Chain Size (mm)	WLL (ton)	Φ	A	E	H	R	M	L	Weight (kg)	Product Code
10-ESK-06	6	1.4	21	43	27	20	110	70	141	0.5	505006006
10-ESK-08	8	2.5	27	51	35	26	137	90	175	0.9	505006008
10-ESK-10	10	4	34.5	64.5	43	27	170	108	212	1.5	505006010
10-ESK-13	13	6.7	40	80	51.5	40.5	209	137.5	269	2.7	505006013
10-ESK-16	16	10	50	104	59	50.5	256	170.5	333	5.7	505006016
10-ESK-20	20	16	60	124	74.5	62	277	191.5	368.5	7.9	505006020
10-ESK-22	22	19	70	139	78	66	319	205	417	11.2	505006022
10-ESK-26	26	26.5	76	164	99	81	370	251	489	20.5	505006026
10-ESK-32	32	40	95	195	138	101	469	329	620	40.35	505006032

Grade 100 Sling Components are high-strength alloy steel lifting accessories designed for heavy-duty lifting applications. Compared with Grade 80, Grade 100 offers higher working load limits (WLL) at the same size, or the same WLL with a smaller, lighter component.

What Does "Grade 100" Mean?

High-Strength Alloy: Heat-treated, quenched, and tempered steel.
Increased Capacity: Typically 25% higher WLL than Grade 80.
Safety Factor: Minimum breaking force ≈ 4 × WLL.
Standards: EN 818-4 / EN 818-6, ASTM equivalents.

Common Sling Components

1. Master Links

Used to connect the sling to the crane hook.

Master Link (ML)
Master Link Assembly (2-leg, 3-leg, 4-leg)
Pear-shaped master links

2. Hooks

End fittings for attaching loads.

Clevis Self-Locking Hook (Common)
Eye Self-Locking Hook
Sling Hook with Latch
Foundry Hook
Shortening Hook (Eye/Clevis)

3. Connecting Links

Used to join chain or components.

Clevis Connector
Hammerlock / Coupling Link
Repair Link (Special use only)

4. Special Components

For complex rigging scenarios.

Swivels (Bearing/Non-bearing)
Chain Adjusters
Lifting Rings (Rotating)
Grab Hooks

Grade 80 vs Grade 100 (Quick Comparison)

Item	Grade 80	Grade 100
Relative Strength	Base	+25% Higher
Sling Weight	Heavier	Lighter
Typical Marking	G80 / 8	G100 / 10
Cost	Lower	Higher

Identification & Markings

Every Grade 100 component must be clearly marked with:

Grade: G100 or 10
Manufacturer's Mark
Size or WLL
Traceability Code (Batch / Heat Number)

⚠️ Safety & Compatibility Warning

❌ NEVER mix Grade 100 with Grade 80 components in the same sling assembly.
✅ Use only Grade 100 chain + Grade 100 fittings together.
Regularly inspect for wear (>10%), cracks, deformation, heat damage, or corrosion.