REAMERS USER GUIDE Reamer Manufacturing Tolerances (continued) Nominal Diameter of Reamer Manufacturing Tolerances DIN 1420 Reamer D1 in mm Admissible maximum and minimum reamer dimensions of nominal diameter d1 in µm for drilling tolerance range Over Up to R6 R7 S6 S7 T6 U6 U7 U10 X10 X11 Z10 Z11 1 3 -11 -12 -15 -16 -19 -19 -20 -24 -26 -29 -32 -35 -14 -16 -18 -20 -22 -22 -24 -38 -40 -50 -46 -56 3 6 -14 -13 -18 -17 -22 -22 -21 -31 -36 -40 -43 -47 -17 -18 -21 -22 -25 -25 -26 -48 -53 -67 -60 -56 6 10 -18 -16 -22 -20 -27 -27 -25 -37 -43 -48 -51 -47 -22 -22 -26 -26 -31 -31 -31 -58 -64 -80 -72 -74 10 14 -22 -19 -27 -24 -32 -32 -29 -44 -51 -57 -61 -56 -26 -26 -31 -31 -36 -36 -36 -69 -76 -96 -86 -88 14 18 -22 -19 -27 -24 -32 -32 -29 -44 -  56 -62 -71 -67 -26 -26 -31 -31 -36 -36 -36 -69 -  81 -101 -96 -106 18 24 -26 -24 -33 -31 -39 -39 -37 -54 -  67 -74 -86 -77 -31 -32 -38 -39 -44 -44 -45 -84 -  97 -120 -116 -116 24 30 -26 -24 -33 -31 -39 -46 -44 -61 -  77 -84 -101 -108 -31 -32 -38 -39 -44 -51 -52 -69 -107 -130 -131 -154 30 40 -32 -29 -41 -38 -46 -58 -55 -75 -  95 -104 -127 -136 -38 -38 -47 -47 -52 -64 -64 -110 -130 -160 -162 -192 40 50 -32 -29 -41 -38 -52 -68 -65 -85 -112 -121 -151 -160 -38 -38 -47 -47 -58 -74 -74 -120 -147 -177 -186 -216 50 65 -38 -35 -50 -47 -63 -84 -81 -105 -140 -151 -190 -201 -45 -46 -57 -58 -70 -91 -92 -147 -182 -218 -232 -268 65 80 -40 -37 -56 -53 -72 -99 -96 -120 -164 -175 -228 -239 -47 -48 -63 -64 -79 -106 -107 -162 -206 -242 -170 -306 80 100 -48 -44 -68 -64 -88 -121 -117 -145 -199 -211 -179 -291 -56 -57 -76 -77 -96 -129 -130 -194 -248 -288 -328 -368 100 120 -51 -47 -76 -72 -101 -141 -139 -165 -231 -243 -331 -343 -59 -60 -84 -85 -109 -149 -150 -214 -280 -320 -380 -420 120 140 -60 -54 -89 -83 -119 -167 -161 -194 -272 -286 -389 -403 -69 -68 -98 -97 -128 -176 -175 -250 -328 -374 -445 -491 140 160 -62 -56 -97 -91 -131 -187 -181 -214 -304 -318 -439 -453 -71 -70 -106 -105 -140 -196 -195 -270 -360 -406 -495 -541 Over Up to H6 H7 H8 H9 H10 H11 H12 J6 J7 J8 JS6 JS7 JS8 JS9 1 3 +5 +8 +11 +21 +34 +51 +85 +1 +2 +3 +2 +3 +4 +8 +2 +4 +6 +12 +20 +30 +50 -2 -2 -2 -1 -1 -1 -1 3 6 +6 +10 +15 +25 +40 +63 +102 +3 +4 +7 +2 +4 +6 +10 +3 +5 +8 +14 +23 +30 +60 0 -1 0 -1 -1 -1 -1 6 10 +7 +12 +18 +30 +49 +76 +127 +3 +5 +8 +3 +5 +7 +12 +3 +6 +10 +17 +28 +44 +74 -1 -1 0 -1 -1 -1 -1 10 16 +9 +15 +22 +36 +59 +93 +153 +4 +7 +10 +3 +6 +9 +15 +5 +8 +12 +20 +34 +54 +90 0 0 0 -1 -1 -1 -1 18 30 +11 +17 +28 +44 +71 +110 +178 +6 +8 +15 +4 +7 +11 +18 +6 +9 +16 +25 +41 +64 +104 +1 0 +3 -1 -1 -1 -1 30 50 +13 +21 +33 +52 +85 +136 +212 +7 +10 +18 +5 +8 +13 +21 +7 +12 +19 +30 +50 +80 +124 +1 +1 +4 -1 -1 -1 -1 50 80 +16 +25 +39 +62 +102 +161 +255 +10 +13 +21 +6 +10 +16 +25 +9 +14 +22 +36 +60 +94 +150 +3 +2 +4 -1 -1 -1 -1 90 120 +18 +29 +45 +73 +119 +187 +297 +12 +16 +25 +7 +12 +18 +30 +10 +16 +26 +42 +70 +110 +174 +4 +3 +6 -1 -1 -1 -1 120 180 +21 +34 +53 +85 +136 +212 +360 +14 +20 +31 +8 +16 +72 +35 +12 +20 +30 +50 +80 +124 +200 +5 +6 +8 -1 0 -1 0 Over Up to K6 K7 K8 M6 M7 M8 N6 N7 N8 N9 N10 N11 P6 P7 1 3 -1 -2 -3 -3 -4 -5 -5 -6 -7 -8 -10 -13 -7 -8 -4 -6 -8 -6 -8 -10 -8 -10 -12 -17 -24 -34 -10 -12 3 6 0 +1 +2 -3 -2 -1 -7 -6 -5 -5 -8 -12 -11 -10 -3 -4 -5 -6 -7 -8 -10 -11 -12 -16 -25 -39 -14 -15 6 10 0 +2 +2 -5 -3 -3 -9 -7 -7 -6 -9 -14 -14 -12 -4 -4 -6 -9 -9 -11 -13 -13 -15 -19 -30 -46 -18 -18 10 18 0 +3 +3 -6 -3 -3 -11 -8 -8 -7 -11 -17 -17 -14 -4 -4 -7 -10 -10 -13 -15 -15 -18 -23 -36 -56 -21 -21 18 30 0 +2 +5 -6 -4 -1 -13 -11 -8 -8 -13 -20 -20 -18 -5 -6 -7 -11 -12 -13 -18 -19 -20 -27 -43 -66 -25 -26 30 50 0 +3 +6 -7 -4 -1 -15 -12 -9 -10 -15 -24 -24 -21 -6 -6 -8 -13 -13 -15 -21 -21 -23 -32 -50 -80 -30 -30 50 80 +1 +4 +7 -8 -5 -2 -17 -14 -11 -12 -18 -29 -29 -26 -6 -7 -10 -15 -16 -19 -24 -25 -28 -38 -60 -96 -36 -37 80 120 0 +4 +7 -10 -6 -3 -20 -16 -13 -14 -21 -33 -34 -30 -8 -9 -12 -18 -19 -22 -28 -29 -32 -45 -70 -110 -42 -43 120 180 0 +6 +10 -12 -6 -2 -24 -18 -14 -15 -24 -38 -40 -34 -9 -8 -13 -21 -20 -25 -33 -32 -37 -50 -80 -126 -49 +48 331