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Description du produit
Crosby A-1346 Welded Master Link Assemblies are designed for use as the top assembly in multi-leg chain slings (3-leg and 4-leg configurations). These assemblies provide a strong and reliable connection point between sling legs and lifting hardware, making them essential for heavy-duty overhead lifting applications.
Manufactured from high-strength alloy steel and fully welded, the A-1346 assembly ensures superior durability and structural integrity. It is specifically engineered to handle complex lifting configurations while maintaining consistent load distribution across multiple sling legs.
Material:
Body: Alloy steel
Heat treatment: Quenched and tempered for strength and toughness
Finish: Painted or coated for corrosion resistance
Specifications:
Designed for 3-leg and 4-leg chain sling assemblies
Compatible with Grade 100 and Grade 80 chain slings
Working Load Limit range: approx. 3,000 kg to 26,500 kg (varies by size)
5:1 design factor for lifting applications
Individually proof tested with certification
Proof testing uses special fixtures to prevent point loading
Each assembly marked with:
Product Identification Code (PIC) for traceability
Size, grade, and manufacturer markings
Meets or exceeds ASME B30.26 and EN 1677-4 standards
Type approved to DNV certification for offshore container use
Fatigue rated to 20,000 cycles at 1.5× WLL
Uses:
Multi-leg chain sling assemblies (3-leg / 4-leg)
Overhead lifting and rigging
Offshore and heavy industrial lifting
Construction and material handling operations
Key Features:
Multi-leg lifting capability – Designed for 3 and 4 leg sling systems
High strength construction – Welded alloy steel design
Certified performance – Proof tested and DNV approved
Durable design – Built for heavy-duty and offshore environments
Traceability – PIC code ensures full material tracking
Fatigue resistant – Rated for repeated lifting cycles
| Stock No. | Weight Each (lb) | Grade 100 Chain Sling Three / Four Legs Chain Size (in) | Grade 80 Chain Sling Three / Four Legs Chain Size (in) | Working Load Limit (lb) | Proof Load (lb) | Dimension A (in) | Dimension B (in) | Dimension C (in) | Dimension D (in) | Dimension E (in) | Dimension F (in) | Dimension G (in) | Engineered Flat Size for S-1325A Chain Size (in) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1256865 | 2.4 | 6mm | 6mm | 7,000 | 17,632 | 0.51 | 2.36 | 4.72 | 0.51 | 4.72 | 2.36 | 0.26 | 6mm |
| 1256868 | 3.5 | 6mm | 6mm | 9,000 | 22,701 | 0.67 | 3.54 | 6.30 | 0.51 | 4.72 | 2.36 | 0.26 | 6mm, 9/32 |
| 1256874 | 3.9 | 6mm | 9/32 | 9,200 | 23,362 | 0.75 | 3.54 | 6.30 | 0.51 | 4.72 | 2.36 | 0.26 | 9/32, 5/16 |
| 1256878 | 7.3 | 5/16, 9/32 | 5/16 | 15,400 | 38,570 | 0.87 | 3.94 | 7.09 | 0.67 | 6.30 | 3.54 | 0.33 | 3/8 |
| 1256880 | 8.9 | 5/16, 9/32 | 5/16 | 15,400 | 38,570 | 0.87 | 5.71 | 10.83 | 0.67 | 6.30 | 3.54 | 0.33 | 3/8 |
| 1256876 | 8.4 | 5/16 | 3/8 | 18,700 | 46,725 | 0.87 | 3.94 | 7.09 | 0.75 | 6.30 | 3.54 | 0.33 | 3/8 |
| 1256882 | 10.1 | 5/16 | 3/8 | 19,600 | 49,149 | 0.98 | 4.53 | 8.27 | 0.75 | 6.30 | 3.54 | 0.33 | 3/8 |
| 1256892 | 11.4 | 5/16 | 3/8 | 19,600 | 49,149 | 0.98 | 5.71 | 10.83 | 0.75 | 6.30 | 3.54 | 0.33 | 3/8 |
| 1256917 | 15.6 | 3/8 | 1/2 | 31,900 | 80,005 | 1.10 | 5.71 | 10.83 | 0.87 | 7.09 | 3.94 | 0.41 | 1/2 |
| 1256926 | 21.2 | 1/2 | 1/2 | 37,400 | 93,670 | 1.26 | 5.71 | 10.83 | 0.98 | 8.27 | 4.53 | 0.53 | 5/8 |
| 1256929 | 28 | 1/2 | 5/8 | 52,000 | 130,036 | 1.42 | 6.10 | 11.22 | 1.10 | 7.48 | 4.33 | 0.53 | 5/8 |
| 1256930 | 40.6 | 5/8 | 5/8 | 61,900 | 154,941 | 1.57 | 5.51 | 10.63 | 1.26 | 10.83 | 5.71 | 0.66 | — |
| 1256953 | 58.6 | 5/8 | 3/4 | 84,400 | 211,143 | 1.77 | 7.09 | 13.39 | 1.42 | 11.22 | 6.10 | — | — |
| 1256958 | 78.2 | 3/4 | 7/8 | 99,200 | 247,950 | 2.01 | 8.46 | 15.35 | 1.57 | 10.63 | 5.51 | — | — |
| 1256973 | 134.6 | 7/8 | 1 | 147,600 | 369,170 | 2.17 | 7.99 | 15.98 | 2.01 | 15.35 | 8.46 | — | — |
Series: Grade 100 A-1346 Welded Master Link Assembly
Design Factor: 5:1. Applications with wire rope and synthetic sling generally require a Design Factor of 5.
Load Rating: Based on a single-leg sling in an in-line load, or resultant load on multiple legs with an included angle less than or equal to 120 degrees.
Proof Test: Proof Test Load equals or exceeds the requirements of ASTM A952 (8.1) and ASME B30.9.
Chain Sling Design Factor: Chain slings require a 4:1 Design Factor. Refer to Applications & Warnings to determine the product's actual Ultimate Load.
Manufactured Flats: There are no manufactured flats on links over 1-1/4 in (32 mm).
| Specification | Value |
|---|---|
| Series | A-1346 |
| Type | Welded |
| Material | Alloy Steel |