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Home > Products > All Collections > Lifting Chains, Slings & Fittings > Grade 100 Chain Fittings > Links EN 1677-4 > Grade 100 Master Link MLF type

Grade 100 Master Link MLF type

Name: Grade 100 Master Link MLF type
Brand: H-Lift Industries Co Ltd
SKU: 505021
Availability: InStock
Rating: 5 (1 reviews)

No.505021

The Grade 100 Master Link (MLF Type) is a high-strength oblong ring utilized as the upper terminal connection point for 1-leg and 2-leg chain, wire rope, or synthetic lifting slings.

Engineered Flat Section: Most sizes (10-MLF-13 to 10-MLF-36) feature a specially engineered flattened section to allow easy and secure connection with mechanical omega links.
Grade 100 Performance: Manufactured from quenched and tempered alloy steel, offering 25% greater lifting capacity than standard Grade 80 master links.
Standard Compliance: Designed strictly to EN 1677 standards, ensuring a 4:1 safety factor for demanding overhead lifting operations.
Rigorous Testing: Every link is proof-load tested to 2.5 times the Working Load Limit (WLL) and finished with a durable powder coating.

Technical Data
G-100 Alloy Fittings

Grade 100 Forged Master Link - MLF Type

Premium Drop Forged Alloy Steel Master Link

Grade 100 Alloy Steel Drop Forged +25% WLL Capacity Engineered Flats

*Drop forged construction for superior strength

Product Features

High-Strength Grade 100: Manufactured from premium Grade 100 Alloy Steel, providing a 25% higher Working Load Limit (WLL) compared to Grade 80 master links of the same dimensions. Ideal for heavy lifting where weight reduction is desired.
Drop Forged Construction: Features a solid, seamless drop-forged design. Unlike welded rings, this ensures uniform grain structure and superior resistance to fatigue and shock loading.
1-Leg & 2-Leg Application: Designed as the primary top fitting for assembling Single-Leg and Double-Leg chain slings, as well as wire rope bridles.
Engineered Flats: The bottom section of the link is pressed flat to accommodate Connecting Links (Hammerlocks), ensuring a proper fit without overcrowding the hardware.
Safety Factor: Designed with a 4:1 Safety Factor for chain sling applications (5:1 for wire rope in some regions).
Testing: 100% Proof Loaded to 2.5 times the WLL.

Selection Guide: Master Link vs. Assembly

Product	Configuration	Application
Master Link (MLF) (This Product)	Single Ring	1 or 2 Legs Use for single leg slings or 2-leg bridles. Do NOT use for 3 or 4 legs (too crowded).
Master Link Assembly (MAE / MLY Type)	Ring + 2 Sub-links	3 or 4 Legs Required for 3-leg and 4-leg slings to ensure proper load distribution and articulation.

Technical Specifications

Item No.	Chain Size (mm)		WLL (ton)	Main Dimensions (mm)			Weight (kg)	Product Code
Item No.	1 leg	2 legs	WLL (ton)	A	B	D	Weight (kg)	Product Code
10-MLF-10	5	5	1.4	80	50	10	0.14	505021010
10-MLF-13	6+7	6	2.3	110	60	13	0.34	505021013
10-MLF-16	8	7	3.5	110	60	16	0.53	505021016
10-MLF-18	10	8	5	135	75	18	0.86	505021018
10-MLF-22	13	10	7.6	160	90	23	1.6	505021022
10-MLF-26	16	13	10	180	100	27	2.46	505021026
10-MLF-32	19	16	14	200	110	33	4.14	505021032
10-MLF-36	22	19	25.1	260	140	36	6.22	505021036
10-MLF-45	26	22	30.8	340	180	45	12.85	505021045
10-MLF-50	32	26	40	350	190	50	16.22	505021050
10-MLF-56	/	32	60	400	200	60	27.01	505021056
10-MLF-70	/	/	81.5	460	250	70	45	505021070

* 10-MLF-13 ~ 10-MLF-36: supplied with flat section for easier assembly.

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.