Общий каталог Yamawa 2022 - 2023 - страница 1190

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Technical Description of productsInformation 15. Bored hole size before tapping ( for thread cutting ) ■ for Unified Threads Unit：mm Size Minor diameter of internal threads (D1) Bored hole sizeMax.Min.( ref.) Size Minor diameter of internal threads (D1) Bored hole sizeMax.Min.( ref.) No. 0 - 80UNF 1.305 1.182 1.27 5/8 - 20UN 14.782 14.504 14.71 No. 1 - 64UNC 1.582 1.425 1.54 5/8 - 24UNEF 14.986 14.732 14.92 No. 1 - 72UNF 1.612 1.474 1.58 3/4 - 10UNC 16.840 16.307 16.7 No. 2 - 56UNC 1.871 1.695 1.83 3/4 - 16UNF 17.678 17.323 17.59 No. 2 - 64UNF 1.912 1.756 1.87 3/4 - 20UNEF 17.957 17.679 17.89 No. 3 - 48UNC 2.146 1.941 2.09 7/8 - 9UNC 19.761 19.177 19.6 No. 3 - 56UNF 2.197 2.025 2.15 7/8 - 14UNF 20.675 20.270 20.6 No. 4 - 40UNC 2.385 2.157 2.33 7/8 - 20UNEF 21.132 20.854 21.06 No. 4 - 48UNF 2.458 2.271 2.41 1 - 8UNC 22.606 21.971 22.4 No. 5 - 40UNC 2.697 2.487 2.64 1 - 12UNF 23.571 23.114 23.5 No. 5 - 44UNF 2.740 2.551 2.69 1 - 14UNS 23.825 23.445 23.7 No. 6 - 32UNC 2.895 2.642 2.83 1 - 20UNEF 24.307 24.029 24.24 No. 6 - 40UNF 3.022 2.820 2.97 1 1/16 - 12UN 25.146 24.689 25.0 No. 8 - 32UNC 3.530 3.302 3.47 1 1/16 - 14UNS 25.412 25.032 25.3 No. 8 - 36UNF 3.606 3.404 3.56 1 1/8 - 7UNC 25.349 24.638 25.2 No.10 - 24UNC 3.962 3.683 3.89 1 1/8 - 8UN 25.781 25.146 25.6 No.10 - 32UNF 4.165 3.963 4.11 1 1/8 - 12UNF 26.746 26.289 26.6 No.12 - 24UNC 4.597 4.344 4.53 1 1/8 - 14UNS 27.000 26.620 26.9 No.12 - 28UNF 4.724 4.496 4.67 1 3/16 - 12UN 28.321 27.864 28.2 No.12 - 32UNEF 4.826 4.623 4.78 1 1/4 - 7UNC 28.524 27.813 28.3 1/4 - 20UNC 5.257 4.979 5.19 1 1/4 - 8UN 28.956 28.321 28.8 1/4 - 28UNF 5.588 5.360 5.53 1 1/4 - 12UNF 29.921 29.464 29.8 1/4 - 32UNEF 5.689 5.487 5.64 1 5/16 - 12UN 31.496 31.039 31.4 5/16 - 18UNC 6.731 6.401 6.65 1 3/8 - 6UNC 31.115 30.353 30.9 5/16 - 24UNF 7.035 6.782 6.97 1 3/8 - 8UN 32.131 31.496 32.0 5/16 - 32UNEF 7.264 7.087 7.22 1 3/8 - 12UNF 33.096 32.639 33.0 3/8 - 16UNC 8.153 7.798 8.06 1 1/2 - 6UNC 34.290 33.528 34.1 3/8 - 24UNF 8.636 8.382 8.57 1 1/2 - 8UN 35.306 34.671 35.1 3/8 - 32UNEF 8.864 8.662 8.81 1 1/2 - 12UNF 36.271 35.814 36.2 7/16 - 14UNC 9.550 9.144 9.4 1 5/8 - 5UNS 36.652 35.789 36.4 7/16 - 20UNF 10.033 9.729 9.96 1 5/8 - 8UN 38.481 37.846 38.3 7/16 - 24UNS 10.210 9.957 10.15 1 5/8 - 12UN 39.446 38.989 39.3 7/16 - 28UNEF 10.337 10.135 10.29 1 3/4 - 5UNC 39.827 38.964 39.6 1/2 - 13UNC 11.023 10.592 10.9 1 3/4 - 8UN 41.656 41.021 41.5 1/2 - 20UNF 11.607 11.329 11.54 1 3/4 - 12UN 42.621 42.164 42.5 1/2 - 24UNS 11.811 11.557 11.75 1 7/8 - 8UN 44.831 44.196 44.7 1/2 - 28UNEF 11.938 11.710 11.88 1 7/8 - 12UN 45.796 45.339 45.7 1/2 - 32UN 12.039 11.837 11.99 2 - 4 1/2UNC 45.593 44.679 45.4 9/16 - 12UNC 12.446 11.989 12.3 2 - 8UN 48.006 47.371 47.8 9/16 - 18UNF 13.081 12.751 13.00 2 - 12UN 48.971 48.514 48.9 9/16 - 20UN 13.208 12.904 13.13 2 1/4 - 8UN 54.356 53.721 54.2 9/16 - 24UNEF 13.385 13.132 13.32 2 1/2 - 8UN 60.706 60.071 60.5 5/8 - 11UNC 13.868 13.386 13.7 2 3/4 - 8UN 67.056 66.421 66.9 5/8 - 18UNF 14.681 14.351 14.60 3 - 8UN 73.406 72.771 73.2 • The recommended tap drill sizes indicated above are for JIS Class 2B UNC & UNF threads, and ANSI B1.1 Class 2B UNEF, UN & UNS threads. Technical-39