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Leading UK Supplier of Jaw-to-Jaw Turnbuckles.

We specialise in the supply of high-integrity Jaw-to-Jaw Turnbuckles (Rigging Screws), engineered as a heavy-duty tensioning and articulating connection component for structural steelwork, rigging assemblies, and civil engineering applications.

Designed with secure clevis/jaw ends complete with removable pins at both extremities, our turnbuckles allow for robust, pinned attachment while providing precise length and tension adjustment within structural tie rod systems.

Utilising advanced in-house hot forging, thread rolling, machining, and assembly cells, for the production of bespoke solutions, we ensure consistent structural performance, optimal material grain flow, and precise thread tolerances across every production run.


jaw to jaw turnbuckle us federal diagram drawing

Jaw-to-Jaw Turnbuckle Technical Dimensions and Safe Working Load Specifications
A Take Up B C D E F G H SWL Weight Each
Thread Size inches mm (min) mm (max) mm mm mm mm mm Tonnes kgs
3/8 6 302 454 13 22 8 8 21 0.54 0.37
1/2 6 338 490 16 26 9.5 10 25 1.00 0.73
1/2 9 414 642 16 26 9.5 10 25 1.00 0.79
1/2 12 490 795 16 26 9.5 10 25 1.00 0.96
5/8 6 394 546 18 33 13 13 33 1.59 1.37
5/8 9 470 698 18 33 13 13 33 1.59 1.31
5/8 12 546 851 18 33 13 13 33 1.59 1.53
5/8 18 701 1150 18 33 13 13 33 1.59 1.86
3/4 6 432 584 23 38 15.5 16 41 2.36 1.86
3/4 9 508 736 23 38 15.5 16 41 2.36 2.31
3/4 12 584 883 23 38 15.5 16 41 2.36 2.56
3/4 18 737 1194 23 38 15.5 16 41 2.36 3.11
7/8 12 625 854 27 44 19 18 48 3.27 3.71
7/8 18 778 1121 27 44 19 18 48 3.27 4.14
1 6 524 676 30 52 22 20 54 4.54 4.29
1 12 676 981 30 52 22 20 54 4.54 5.07
1 18 829 1286 30 52 22 20 54 4.54 6.62
1 24 980 1592 30 52 22 20 54 4.54 7.85
1. 1/4 12 760 1055 44 73 29 25 67 6.90 9.48
1. 1/4 18 912 1370 44 73 29 25 67 6.90 11.60
1. 1/4 24 1064 1665 44 73 29 25 67 6.90 13.00
1. 1/2 12 823 1129 52 70 35 27 80 9.71 13.60
1. 1/2 18 975 1434 52 70 35 27 80 9.71 14.30
1. 1/2 24 1128 1738 52 70 35 27 80 9.71 18.40
1. 3/4 18 1060 1533 59 85 41 33 90 12.70 25.00
1. 3/4 24 1213 1838 59 85 41 33 90 12.70 28.70
2 24 1315 2011 64 93 51 39 108 16.78 45.40
2. 1/2 24 1486 2098 75 114 57 38 143 27.22 73.00
2. 3/4 24 1562 2171 89 110 70 42 156 34.02 98.00