D-Thread Technical Section Avy\ Steel Cylindrical Shank (U Style) Applications Thread Applications for Partial Profile Inserts Thread Applications for Full Profile Inserts (ISO & UN) Tool holder Min. Thread Dia. Tool holder Pitch Toolholder cuttingdiameter D (mm) Min. Thread Dia Designation D ISO Coarse ISO Fine UNC UN/UNF/UNEF/UNS BSP(G) Partial 55° Designation mm TPI D Adjustment ISO Fine UN/UNF/UNEF/UNS SR0023 -11U -C18 -170 23.30 M27X3.0M30X3.5M36X4.0M24x0.5; M25x0.75;M25xl.0;M25xl.25;M26x1.5; M26x2.0;M27X2.5.1V -71-32UN;1-28UN;1-27UN;1-24UNS; 1-20UNEF;1-18UNS;1-16UN;1-14UNS;1V16 -12UN;lV8-10UNS;1V8-8UN3/-1441-111-26;1-20;1 V8 -16; 1 V8 -12;1 V8 -9;1 V8 -7SR0023-11U-C18-170 1.5 22.00 M26X1.52.021.85M26X2.01421.94 1-14UNS1221.851-12UNF M27x0.5; M27x0.75; 1V8-28UN;1V -8 24UNS;SR0026-11U-C20-18026.00M30x3.5M36X4.0M28xl.0;M28xl.25;1V4-7,M28x1.5; M29x2.0;M30x2.5; M30x3.013/8-6l1/ -8 20UN;l1/ 8-18UNEF;1V 8-16UN;1V 8-14UNS;l1/-12UNF;l3 /-10UNS;?/-1481-111V8 -26; 1y§ -20;l3 /16 -16;l3 /16-12;13 /16-8; 1V4-717 /16-8UNSR0026-11U-C20-1801.525.00M28X1.52.024.85M29X2.01424.9411/8-14UNS M32x0.5; M32x0.75;M33xl.0;M33x1.25;SR0031-11U-C25-20031.00M36X4.0M33x1.5; M34x2.0;1V2-6M34x2.5; M35x3.0;M36X3.515 / - 16 28UN;l1/2 -24UNS;1V2 -20UN;lV 2 -18UNEF;l3 / 8 -16UN;l3 / g -14UNS;.17 -11l3 / g -12UNF;l3 / g -10UNS;1V - 16 26;1V 16-20;l3/8 -16;l3/8 -12;17 /ie-817 /8 -8UN1224.85 11/8-12UNFSR0031-11U-C 25 - 2001.530.00M33X1.52.029.85M34x2.01429.9413/8-14UNS 12 29.85 13/8-12UNF SR0036-16U-C25-200SR0036-16U-C28-22536.50M42.5x4.5M48X5.0M56X5.5M64x6.0M39x1.5; M40x2.5;M41x3.0;M42x3.5;M42X4.0l 3/4 -52-4.52 V 2 -4l9/-16UN;l5/ -14UNS;lfi819/16-12UN; l5/8-10UNS;1S/8-8UN;l5/8-6UN174-Hl5 / -16; 8 15 / 8-12;1V8-8;I7/8 -6;l 3/4 -5 Thread Applications for Full Profile Inserts (NPT) £ Tool holder Pitch Toolholder cuttingdiameter D2 (mm)Cylindrical or Conical pre-drilled holeCylindrical pre-drilled holeNPT Threading by 2 RadialDesignationTPID AdjustmentNPT Threading by 1Radial PassPasses (50% / 50%)SR0023-11U-C18-17011.522.631-11.5NPT; 1V4-11.5NPT;172-11.5NPT; 2-11.5NPT SR0026-11U-C20-180 11.5 25.63 1-11.5NPT; 174-11.5NPT; 1V2-11.5NPT; 2-11.5NPT The length of cylindrical shank toolholders can be modified to reduce chatter (vibration).Note: The length of the shank inside the clamping device should be L3 at minimum. SR0031-11U-C25-200 11.5 30.63 174-11.5NPT;172-11.5NPT;2-11.5NPT SR0036-16U-C25-200 11.5 35.65 iy4-11.5NPT; 172-H.5NPT; SR0036-16U-C28 - 225 2-11.5 NPT SR0036-16U-C25 -200 8 35.65 2 1/2...10-8NPT SR0036-16U-C28-225 Correct the toolholder cutting diameter D according to adjustment, as indicated in the above table. Note: When the pre-drilled hole for 8 NPT is conical, the thread can be machined in one pass. 363 364