Name: Grade 100 Clevis Self Locking Hook CSK type
Brand: H-Lift Industries Co Ltd
SKU: 505007
Availability: InStock
Rating: 5 (1 reviews)

No.505007

The Grade 100 Clevis Self-Locking Hook (CSK Type) is an exceptionally secure bottom hook commonly used on chain slings, designed to keep loads fully captured even if the lifting line becomes slack.

Automatic Locking: Features a heavy-duty latch that automatically closes and locks the moment tension is applied, providing maximum safety during overhead lifts.
Direct Clevis Mount: The clevis head allows for a fast, secure, and direct connection to Grade 100 chains without requiring extra connecting links, eliminating mismatched fittings.
Trigger Release: The hook remains firmly locked under load and requires manual activation of the release trigger when unloaded to open, preventing accidental disengagement.
Wide Capacity Range: Forged from high-strength Grade 100 alloy steel, accommodating chain sizes from 6mm to 32mm with robust Working Load Limits (WLL) from 1.4 tons up to 40 tons.

Technical Data
G-100 Alloy Fittings

Grade 100 Clevis Self-Locking Hook - CSK Type

Automatic Safety Lock with Direct Chain Connection

Grade 100 Alloy Steel Self-Locking Clevis Connection 25% Higher WLL

*Automatically closes and locks under load

Product Features

Maximum Safety (Self-Locking): Features an automatic locking mechanism that closes and locks as soon as the load is lifted. The hook cannot open under load, preventing accidental release even if the load bumps against obstacles.
Grade 100 Performance: Manufactured from high-strength Grade 100 Alloy Steel. Offers a 25% higher Working Load Limit (WLL) than Grade 80 hooks, allowing for the use of smaller, lighter chains for heavy lifts.
Integrated Clevis Connection: Designed with a built-in clevis pin to attach directly to the Grade 100 chain. This eliminates the need for an intermediate Connecting Link (Hammerlock), reducing the weight and length of the sling assembly.
Recessed Trigger: The release trigger is flush with the hook body, protecting it from damage and preventing accidental activation on the job site.
Larger Throat Opening: The geometry is optimized to allow easy attachment to large lifting points while maintaining a compact profile.
Standard: Compliant with ASTM A952 and EN 1677-3. Proof tested to 2.5x WLL.

Safety Comparison: Self-Locking vs. Sling Hook

Model	Mechanism	Safety Level
Self-Locking (CSK) (This Product)	Automatic Lock	Maximum Safety. Automatically locks under load. Cannot be forced open while lifting. Required on many safety-critical sites.
Sling Hook (CSH) (Standard)	Spring Latch	Basic Safety. Relies on a spring latch to keep load in. Latch can be damaged or pushed open accidentally.

Technical Specifications

Item No.	Chain Size (mm)	WLL (ton)	Main Dimensions (mm)							Weight (kg)	Product Code
Item No.	Chain Size (mm)	WLL (ton)	A	B	E	H	R	M	L	Weight (kg)	Product Code
10-CSK-06	6	1.4	8	32	28	20	96	70	131	0.5	505007006
10-CSK-08	8	2.5	9.5	36	36	26	121	90	163	0.9	505007008
10-CSK-10	10	4	12	46	45	27	144	109	196.5	1.6	505007010
10-CSK-13	13	6.7	15	59	53.5	40.5	182	137	251	2.9	505007013
10-CSK-16	16	10	18.5	70	61	50.5	220	168	303	5.8	505007016
10-CSK-20	20	16	25	85	76.5	62	235	190	337	8.6	505007020
10-CSK-22	22	19	25.5	98	80	66	271	202	386	12.1	505007022
10-CSK-26	26	26.5	30	118	99	80	343	251	484	21.15	505007026
10-CSK-32	32	40	35	150	135	101.5	423	329	601	43.4	505007032

Spare Parts: Trigger Kits

Item No.	Chain Size (mm)	Item No.	Chain Size (mm)
10-SP-CK-06	6	10-SP-CK-16	16
10-SP-CK-08	8	10-SP-CK-20	20
10-SP-CK-10	10	10-SP-CK-22	22
10-SP-CK-13	13	-	-

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.