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- Crosby 'A1346' Welded Master Link Assembly - Range from 3000kg to 26,500kg

Crosby 'A1346' Welded Master Link Assembly - Range from 3000kg to 26,500kg
Crosby A1346 welded master link assemblies.
Crosby A-1346 / WMLA-3126


- Ratings below are for use with chain slings fabricated in accordance with ASTM B30.9.
- Alloy Steel - Quenched and Tempered.
- Design Factor of 4 to 1.
- Individually Proof Tested to values shown.
- Meets or exceed all requirements of ASME B30.26 including identification, ductility, design factor, proof load and temperature requirements. Importantly, these master links meet other critical performance requirements including fatigue life, impact properties and material traceability, not addressed by ASME B30.26.
- Each link has a Product Identification Code (PIC) for material traceability, along with the size and “CG” stamped into it.
Metric Dimensions and Specifications
Size | A-1346 Stock No. |
Weight Each (kg) |
For use as Grade 100Chain Sling Three Four Legs Chain Size (mm) |
For use as Grade 80 Chain Sling Three Four Legs Chain Size (mm) |
WLL (t) |
Proof Load (t) | Dimensions (mm) | |||||
A | B | C | D | E | F | |||||||
17X1 | 1256868 | 1.58 | 6 | 7 | 4.1 | 10.3 | 17 | 90 | 160 | 13 | 60 | 120 |
19X2A | 1256874 | 1.8 | 7 | 8 | 4.3 | 10.6 | 19 | 90 | 160 | 13 | 60 | 120 |
22X2B | 1256883 | 3.35 | 8 | 10 | 6.7 | 16.8 | 22 | 100 | 180 | 17 | 90 | 160 |
25X3 | 1256892 | 5.51 | 10 | 10 | 8.9 | 22.3 | 25 | 146 | 275 | 19 | 90 | 160 |
28X4A | 1256917 | 7.17 | 13 | 13 | 14.5 | 36.3 | 28 | 145 | 275 | 22 | 100 | 180 |
31X4B | 1256926 | 9.72 | 13 | 16 | 17 | 42.5 | 31 | 145 | 275 | 25 | 115 | 210 |
36X5 | 1256935 | 12.2 | 16 | 18-19 | 23.6 | 59 | 36 | 146 | 275 | 28 | 100 | 190 |
40X6 | 1256944 | 18.68 | 18 | 19-20 | 28.1 | 70.3 | 40 | 160 | 300 | 31 | 145 | 275 |
45X7 | 1256953 | 26.56 | 19-20 | 22-23 | 38.3 | 95.8 | 45 | 180 | 340 | 36 | 155 | 285 |
50X8 | 1256962 | 32.86 | 22-23 | 26 | 45 | 112.5 | 50 | 200 | 380 | 38 | 140 | 370 |
57X9 | 1256971 | 59.7 | 26 | 32 | 67 | 167.5 | 57 | 203 | 406 | 50 | 200 | 380 |

Imperial Specifications
Ratings below are for use with chain slings fabricated in accordance with ASTM B30.9.
Size | A-1346 Stock No. S.C. | Weight Each (lbs) | WLL (lbs) | Three and Four Leg Sling | Proof Load (lbs) | Dimensions (in.) | ||||||||
Chain Size | WLL (lbs.)* | A | B | C | D | E | F | Dimensional Drawing | ||||||
(in.) | (mm) | |||||||||||||
A18-B13 | 1256507 | 2.50 | 6600 | - | - | - | 16850 | .71 | 2.95 | 5.31 | .51 | .98 | 2.12 |
|
A22-B16 | 1256577 | 4.90 | - | 1/4 | 7 | 11200 | 29650 | .87 | 3.56 | 6.30 | .63 | 1.34 | 2.75 | |
A26-B18 | 1256647 | 7.40 | - | 5/16 | 8 | 14800 | 44900 | 1.00 | 3.94 | 7.10 | .71 | 1.57 | 3.35 | |
A32-B22 | 1256717 | 13.40 | - | 3/8 | 10 | 22900 | 77500 | 1.26 | 4.33 | 7.87 | .87 | 1.97 | 4.53 | |
A36-B26 | 1256787 | 22.00 | - | 1/2 | 13 | 39000 | 116900 | 1.42 | 5.51 | 10.24 | 1.00 | 2.56 | 5.51 | |
A45-B32 | 1256867 | 41.70 | - | 5/8 | 16 | 58700 | 146100 | 1.77 | 7.10 | 13.40 | 1.26 | 2.75 | 5.90 |
* Ultimate Load is 4 times the Working Load Limit. Based on grade 10 chain at 60° sling angle.
† Working Load Limit with coupling links at 90 degrees included angle maximum.
- Ratings below are for use with chain slings fabricated in accordance with ASTM B30.9.
- Alloy Steel - Quenched and Tempered.
- Design Factor of 4 to 1.
- Individually Proof Tested to values shown.
- Meets or exceed all requirements of ASME B30.26 including identification, ductility, design factor, proof load and temperature requirements. Importantly, these master links meet other critical performance requirements including fatigue life, impact properties and material traceability, not addressed by ASME B30.26.
- Each link has a Product Identification Code (PIC) for material traceability, along with the size and “CG” stamped into it.
Metric Dimensions and Specifications
Size | A-1346 Stock No. |
Weight Each (kg) |
For use as Grade 100Chain Sling Three Four Legs Chain Size (mm) |
For use as Grade 80 Chain Sling Three Four Legs Chain Size (mm) |
WLL (t) |
Proof Load (t) | Dimensions (mm) | |||||
A | B | C | D | E | F | |||||||
17X1 | 1256868 | 1.58 | 6 | 7 | 4.1 | 10.3 | 17 | 90 | 160 | 13 | 60 | 120 |
19X2A | 1256874 | 1.8 | 7 | 8 | 4.3 | 10.6 | 19 | 90 | 160 | 13 | 60 | 120 |
22X2B | 1256883 | 3.35 | 8 | 10 | 6.7 | 16.8 | 22 | 100 | 180 | 17 | 90 | 160 |
25X3 | 1256892 | 5.51 | 10 | 10 | 8.9 | 22.3 | 25 | 146 | 275 | 19 | 90 | 160 |
28X4A | 1256917 | 7.17 | 13 | 13 | 14.5 | 36.3 | 28 | 145 | 275 | 22 | 100 | 180 |
31X4B | 1256926 | 9.72 | 13 | 16 | 17 | 42.5 | 31 | 145 | 275 | 25 | 115 | 210 |
36X5 | 1256935 | 12.2 | 16 | 18-19 | 23.6 | 59 | 36 | 146 | 275 | 28 | 100 | 190 |
40X6 | 1256944 | 18.68 | 18 | 19-20 | 28.1 | 70.3 | 40 | 160 | 300 | 31 | 145 | 275 |
45X7 | 1256953 | 26.56 | 19-20 | 22-23 | 38.3 | 95.8 | 45 | 180 | 340 | 36 | 155 | 285 |
50X8 | 1256962 | 32.86 | 22-23 | 26 | 45 | 112.5 | 50 | 200 | 380 | 38 | 140 | 370 |
57X9 | 1256971 | 59.7 | 26 | 32 | 67 | 167.5 | 57 | 203 | 406 | 50 | 200 | 380 |

Imperial Specifications
Ratings below are for use with chain slings fabricated in accordance with ASTM B30.9.
Size | A-1346 Stock No. S.C. | Weight Each (lbs) | WLL (lbs) | Three and Four Leg Sling | Proof Load (lbs) | Dimensions (in.) | ||||||||
Chain Size | WLL (lbs.)* | A | B | C | D | E | F | Dimensional Drawing | ||||||
(in.) | (mm) | |||||||||||||
A18-B13 | 1256507 | 2.50 | 6600 | - | - | - | 16850 | .71 | 2.95 | 5.31 | .51 | .98 | 2.12 |
|
A22-B16 | 1256577 | 4.90 | - | 1/4 | 7 | 11200 | 29650 | .87 | 3.56 | 6.30 | .63 | 1.34 | 2.75 | |
A26-B18 | 1256647 | 7.40 | - | 5/16 | 8 | 14800 | 44900 | 1.00 | 3.94 | 7.10 | .71 | 1.57 | 3.35 | |
A32-B22 | 1256717 | 13.40 | - | 3/8 | 10 | 22900 | 77500 | 1.26 | 4.33 | 7.87 | .87 | 1.97 | 4.53 | |
A36-B26 | 1256787 | 22.00 | - | 1/2 | 13 | 39000 | 116900 | 1.42 | 5.51 | 10.24 | 1.00 | 2.56 | 5.51 | |
A45-B32 | 1256867 | 41.70 | - | 5/8 | 16 | 58700 | 146100 | 1.77 | 7.10 | 13.40 | 1.26 | 2.75 | 5.90 |
* Ultimate Load is 4 times the Working Load Limit. Based on grade 10 chain at 60° sling angle.
† Working Load Limit with coupling links at 90 degrees included angle maximum.
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