US Type Turnbuckle Hook And Hook The US Type Turnbuckle Hook And Hook is designed for reliable straight or in-line pulling applications. With quenched and tempered end fittings, combined with heat-treated bodies, it provides both strength and durability. Functions: Primarily, you should use turnbuckles for straight or in-line pulls only. Construction: The manufacturer quenches and tempers the end fittings, while heat-treating the bodies by normalizing for increased toughness. Proof Load: Additionally, tests show they withstand 2.5 times the working load limit (WLL). Safety Factor: Furthermore, they feature a 5:1 safety factor for enhanced security. Fatigue: Fatigue testing confirms performance at 1.5 times the WLL. Thread DIA & Take Up WLL (T) WEIGHT (KG) Dimension (MM) (IN) (MM) A D E F J K M N BB 1/4 x 4 6.35 x 102 0.18 0.15 6.35 11.2 42.3 32.3 249 187 310 208 103 5/16×4-1/2 7.94 x 114 0.32 0.24 7.94 12.7 50.7 38.1 294 218 358 243 116 3/8 x6 9.53 x 152 0.45 0.38 9.53 14.2 57.8 44.7 387 270 453 301 155 1/2 x 6 12.7 x 152 0.68 0.85 12.7 16.5 89.7 57.9 457 335 5273 375 153 1/2 x 12 12.7 x 305 0.68 1.26 12.7 16.5 89.7 57.9 769 495 839 5 535 314 5/8 x 6 15.9 x 152 1.02 1.46 15.9 22.9 108 71.4 495 368 572 419 153 5/8 x 12 15.9 x 305 1.02 2.08 15.9 22.9 108 71.4 809 529 885 580 315 3/4 x 6 19.1 x 152 1.36 1.91 19.1 24.9 128 84.6 538 406 620 467 156 3/4 x 12 19.1 x 305 1.36 3.14 19.1 24.9 128 84.6 853 568 935 630 320 3/4 x 18 19.1 x 457 1.36 3.92 19.1 24.9 128 84.6 1158 721 1240 782 471 7/8 x 12 22.2 x 305 1.81 4.47 22.2 28.7 148 96 886 597 972 667 309 1 x 12 25.4 x 305 2.27 6.70 25.4 31.8 167 108 959 637 1019 714 309
