Technical Information Laydown Threading Laydown Threading Shim Selection Table • Metric toolholder shim ordering code (mm) insert size external internal standard 3 (9,52) RH LH SM–YE3–3P SM–YE3–2P SM–YE3–1P SM–YE3 SM–YE3–1N SM–YE3–1.5N SM–YE3–2N SM–YE3–3N 3 (9,52) LH RH SM–YI3–3P SM–YI3–2P SM–YI3–1P SM–YI3 SM–YI3–1N SM–YI3–1.5N SM–YI3–2N SM–YI3–3N 4 (12,7) RH LH SM–YE4–3P SM–YE4–2P SM–YE4–1P SM–YE4 SM–YE4–1N SM–YE4–1.5N SM–YE4–2N SM–YE4–3N 4 (12,7) LH RH SM–YI4–3P SM–YI4–2P SM–YI4–1P SM–YI4 SM–YI4–1N SM–YI4–1.5N SM–YI4–2N SM–YI4–3N TPI pitch (mm) pitch diameter (mm) 72 – – – – 3,1–8 8–21,4 >21,4 21,4–8 8–3,1 – 0,35 – – – 3,0–8 8–21,3 >21,3 21,3–8 3–8 64 – – – – 3,4–9 9–24,1 >24,1 24,1–9 9–3,4 – 0,40 – – – 3,5–9,1 9,1–24,3 >24,3 24,3–9,1 9,1–3,5 56 0,45 – – – 3,9–10,3 10,3–27,6 >27,6 27,6–10,3 10,3–3,9 – 0,50 – – 2,8–4,3 4,3–11,4 11,4–30,4 >30,4 30,4–11,4 11,4–4,3 48 – – – 3–4,6 4,6–12,1 12,1–32,2 >32,2 32,2–12,1 12,1–4,6 44 – – – 3,3–5 5–13,2 13,2–35,1 >35,1 35,1–13,2 13,2–5 – 0,60 – 2,6–3,4 3,4–5,2 5,2–13,7 13,7–36,5 >36,5 36,5–13,7 13,7–5,2 40 – – 2,8–3,6 3,6–5,5 5,5–14,5 14,5–38,6 >38,6 38,6–14,5 14,5–5,5 – 0,70 – 3,0–4 4–6,1 6,1–16 16–42,6 >42,6 42,6–16 16–6,1 36 – – 3,1–4 4–6,1 6,1–16,1 16,1–42,9 >42,9 42,9–16,1 16,1–6,1 – 0,75 2,8–3,2 3,3–4,3 4,3–6,5 6,5–17,1 17,1–45,6 >45,6 45,6–17,1 17,1–6,5 32 – 3–3,4 3,4–4,5 4,5–6,9 6,9–18,1 18,1–48,3 >48,3 48,3–18,1 18,1–6,9 – 0,80 3–3,5 3,5–4,6 4,6–6,9 6,9–18,2 18,2–48,6 >48,6 48,6–18,2 18,2–6,9 28 – 3,4–3,9 3,9–5,2 5,2–7,9 7,9–20,7 20,7–55,1 >55,1 55,1–20,7 20,7–7,9 27 – 3,6–4,1 4,1–5,4 5,4–8,2 8,2–21,4 21,4–57,2 >57,2 57,2–21,4 21,4–8,2 – 1,00 3,8–4,3 4,3–5,7 5,7–8,7 8,7–22,8 22,8–60,8 >60,8 60,8–22,8 22,8–8,7 24 – 4–4,6 4,6–6 6–9,2 9,2–24,1 24,1–64,3 >64,3 64,3–24,1 24,1–9,2 – 1,25 4,7–5,4 5,4–7,1 7,1–10,8 10,9–28,5 28,5–76 >76,0 76–28,5 28,5–10,8 20 – 4,8–5,5 5,5–7,2 7,2–11 11–28,9 29–77,2 >77,2 77,2–28,9 29–11 18 – 5,3–6,1 6,1–8 8–12,2 12,2–32,2 32,2–85,8 >85,8 85,8–32,2 32,2–12,2 – 1,50 5,7–6,5 6,5–8,5 8,5–13 13–34,2 34,2–91,2 >91,2 91,2–34,2 34,2–13 16 – 6–6,9 6,9–9 9–13,8 13,8–36,2 36,2–96,5 >96,5 96,5–36,2 36,2–13,8 – 1,75 6,6–7,96 7,6–10 10–15,2 15,2–39,9 39,9–106,4 >106,4 106,4–39,9 39,9–15,2 14 – 6,9–7,9 7,9–10,3 10,3–15,7 15,7–41,4 41,4–110,3 >110,3 110,3–41,4 41,4–15,7 13 – 7,4–8,5 8,5–11,1 11,1–17 17–44,5 44,5–118,8 >118,8 118,8–44,5 44,5–17 – 2,00 7,6–8,7 8,7–11,4 11,4–17,4 17,4–45,6 45,6–121,6 >121,6 121,6–45,6 45,6–17,4 12 – 8–9,2 9,2–12 12,1–18,4 18,4–48,2 48,3–128,7 >128,7 128,7–48,2 48,2–18,4 11.5 – 8,4–9,6 9,6–12,6 12,6–19,2 19,2–50,3 50,3–134,3 >134,3 134,3–50,3 50,3–19,2 11 – 8,8–10 10–13,1 13,1–20 20–52,6 52,6–140,4 >140,4 140,4–52,6 52,6–20 – 2,50 9,5–10,8 10,8–14,2 14,2–21,7 21,7–57 57–152 >152,0 152–57 57–21,7 10 – 9,6–11 11–14,5 14,5–22 22–57,9 57,9–154,4 >154,4 154,4–57,9 57,9–22 9 – 10,7–12,2 12,2–16,1 16,1–24,5 24,5–64,3 64,3–171,6 >171,6 171,6–64,3 64,3–24,5 – 3,00 11,4–13 13–17,1 17,1–26 26–68,4 68,4–182,4 >182,4 182,4–68,4 68,4–26 8 – 12–13,8 13,8–18,1 18,1–27,6 27,6–72,4 72,4–193 >193,0 193–72,4 72,4–27,6 – 3,50 13,3–15,2 15,2–19,9 19,9–30,4 30,4–79,8 79,8–212,8 >212,8 212,8–79,8 79,8–30,4 7 – 13,8–15,7 15,7–20,7 20,7–31,5 31,5–82,7 82,7–220,6 >220,6 220,6–82,7 82,7–31,5 – 4,00 15,2–17,3 17,3–22,8 22,8–34,7 34,7–91,2 91,2–243,2 >243,2 243,2–91,2 91,2–34,7 6 – 16–18,3 18,3–24,1 24,1–36,7 36,7–96,5 96,5–257,4 >257,4 257,4–96,5 96,5–36,7 – 5,00 19–21,7 21,7–28,5 28,5–43,4 43,4–114 114–304 >304,0 304–114 114–43,4 5 – 19,3–22 22–28,9 28,9–44,1 44,1–115,8 115,8–308,8 >308,8 308,8–115,8 115,8–44,1 4,5 – 21,4–24,5 24,5–32,1 32,1–49 49–128,7 128,7–343,1 >343,1 343,1–128,7 128,7–49 – 6,00 22,7–26 26–34,2 34,2–52,1 52,1–136,8 136,8–364,8 >364,8 364,8–136,8 136,8–52,1 4 – 24,1–27,5 27,5–36,2 36,2–55,1 55,1–144,8 144,8–386 >386 386–144,8 144,8–55,1 inclination angle 4.5 3.5 2.5 1.5 0.5 0.0 -0.5 -1.5 standard helix reverse helix (feed away (feed toward the chuck) from the chuck) 1. Select TPI or pitch from the left-hand columns. 2. Follow row to specified pitch diameter and the correct feed direction. 3. Follow the column to the top for the required shim based on the toolholder and insert size. standard helix method: reverse helix method: Used when RH thread is cut with RH Used when RH thread is tool or LH thread with LH tool. cut with LH tool or when LH thread is cut with RH tool. widia.com F101