Engineering ABC
werktuigbouw.nl · tribologie.nl · engineering-abc.com

Reference

ISO Tolerances (ISO 286-2)

The complete ISO 286-2 fundamental-deviation tables for holes and shafts, preserved from werktuigbouw.nl — the reference behind the site’s press-fit and tolerance calculators.

Each cell shows the upper and lower deviation in micrometres (μm) for a nominal size range and tolerance grade. A limit shown as “0” is exact nominal size for that bound. Some tolerance grades share identical values across adjacent size ranges — the original standard does this too, not a display error.

Used alongside the press-fit calculator and other fit-dependent calculators.

Holes

Grade>3–6>6–10>10–18>18–30>30–40>40–50>50–65>65–80>80–100>100–120>120–140>140–160>160–180>180–200>200–225>225–250>250–280>280–315>315–355>355–400
E6+28 / +20+34 / +25+43 / +32+53 / +40+66 / +50+66 / +50+79 / +60+79 / +60+94 / +72+94 / +72+110 / +85+110 / +85+110 / +85+129 / +100+129 / +100+129 / +100+142 / +110+142 / +110+161 / +125+161 / +125
E7+32 / +20+40 / +25+50 / +32+61 / +40+75 / +50+75 / +50+90 / +60+90 / +60+107 / +72+107 / +72+125 / +85+125 / +85+125 / +85+146 / +100+146 / +100+146 / +100+162 / +110+162 / +110+185 / +125+185 / +125
E11+95 / +20+115 / +25+142 / +32+170 / +40+210 / +50+210 / +50+250 / +60+250 / +60+292 / +72+292 / +72+335 / +85+335 / +85+335 / +85+390 / +100+390 / +100+390 / +100+430 / +110+430 / +110+485 / +125+485 / +125
E12+140 / +20+175 / +25+212 / +32+250 / +40+300 / +50+300 / +50+360 / +60+360 / +60+422 / +72+422 / +72+485 / +85+485 / +85+485 / +85+560 / +100+560 / +100+560 / +100+630 / +110+630 / +110+695 / +125+695 / +125
E13+200 / +20+245 / +25+302 / +32+370 / +40+440 / +50+440 / +50+520 / +60+520 / +60+612 / +72+612 / +72+715 / +85+715 / +85+715 / +85+820 / +100+820 / +100+820 / +100+920 / +110+920 / +110+1 015 / +125+1 015 / +125
F6+18 / +10+22 / +13+27 / +16+33 / +20+41 / +2+41 / +2+49 / +30+49 / +30+58 / +36+58 / +36+68 / 43+68 / 43+68 / 43+79 / +50+79 / +50+79 / +50+88 / +56+88 / +56+98 / +62+98 / +62
F7+22 / +10+28 / +13+34 / +16+41 / +20+50 / +25+50 / +25+60 / +30+60 / +30+71 / +36+71 / +36+83 / 43+83 / 43+83 / 43+96 / +50+96 / +50+96 / +50+108 / +56+108 / +56+119 / +62+119 / +62
F8+28 / +10+35 / +13+43 / +16+53 / +20+64 / +25+64 / +25+76 / +30+76 / +30+90 / +36+90 / +36+106 / 43+106 / 43+106 / 43+122 / +50+122 / +50+122 / +50+137 / +56+137 / +56+151 / +62+151 / +62
G6+12 / +4+14 / +5+17 / +6+20 / +7+25 / +9+25 / +9+29 / +10+29 / +10+34 / +12+34 / +12+39 / +14+39 / +14+39 / +14+44 / +15+44 / +15+44 / +15+49 / +17+49 / +17+54 / +18+54 / +18
G7+16 / +4+20 / +5+24 / +6+28 / +7+34 / +9+34 / +9+40 / +10+40 / +10+47 / +12+47 / +12+54 / +14+54 / +14+54 / +14+61 / +15+61 / +15+61 / +15+69 / +17+69 / +17+75 / +18+75 / +18
G8+22 / +4+27 / +5+33 / +6+40 / +7+48 / +9+48 / +9+56 / +10+56 / +10+66 / +12+66 / +12+77 / +14+77 / +14+77 / +14+87 / +15+87 / +15+87 / +15+98 / +17+98 / +17+107 / +18+107 / +18
H6+8 / 0+9 / 0+11 / 0+13 / 0+16 / 0+16 / 0+19 / 0+19 / 0+22 / 0+22 / 0+25 / 0+25 / 0+25 / 0+29 / 0+29 / 0+29 / 0+32 / 0+32 / 0+36 / 0+36 / 0
H7+12 / 0+15 / 0+18 / 0+21 / 0+25 / 0+25 / 0+30 / 0+30 / 0+35 / 0+35 / 0+40 / 0+40 / 0+40 / 0+46 / 0+46 / 0+46 / 0+52 / 0+52 / 0+57 / 0+57 / 0
H8+18 / 0+22 / 0+27 / 0+33 / 0+39 / 0+39 / 0+46 / 0+46 / 0+54 / 0+54 / 0+63 / 0+63 / 0+63 / 0+72 / 0+72 / 0+72 / 0+81 / 0+81 / 0+89 / 0+89 / 0
H9+30 / 0+36 / 0+43 / 0+52 / 0+62 / 0+62 / 0+74 / 0+74 / 0+87 / 0+87 / 0+100 / 0+100 / 0+100 / 0+115 / 0+115 / 0+115 / 0+130 / 0+130 / 0+140 / 0+140 / 0
H10+48 / 0+58 / 0+70 / 0+84 / 0+100 / 0+100 / 0+120 / 0+120 / 0+140 / 0+140 / 0+160 / 0+160 / 0+160 / 0+185 / 0+185 / 0+185 / 0+210 / 0+210 / 0+230 / 0+230 / 0
H11+75 / 0+90 / 0+110 / 0+130 / 0+160 / 0+160 / 0+190 / 0+190 / 0+220 / 0+220 / 0+250 / 0+250 / 0+250 / 0+290 / 0+290 / 0+290 / 0+320 / 0+320 / 0+360 / 0+360 / 0
J6+5 / -3+5 / -4+6 / -5+8 / -5+10 / -6+10 / -6+13 / -6+13 / -6+16 / -6+16 / -6+18 / -7+18 / -7+18 / -7+22 / -7+22 / -7+22 / -7+25 / -7+25 / -7+29 / -7+29 / -7
J7+6 / -6+8 / -7+10 / -8+12 / -9+14 / -11+14 / -11+18 / -12+18 / -12+22 / -13+22 / -13+26 / -14+26 / -14+26 / -14+30 / -16+30 / -16+30 / -16+36 / -16+36 / -16+39 / -18+39 / -18
J8+10 / -8+12 / -10+15 / -12+20 / -13+24 / -15+24 / -15+28 / -18+28 / -18+34 / -20+34 / -20+41 / -22+41 / -22+41 / -22+47 / -25+47 / -25+47 / -25+55 / -26+55 / -26+60 / -29+60 / -29
JS6+4 / -4+4.5 / -4.5+5.5 / -5.5+6.5 / -6.5+8 / -8+8 / -8+9.5 / -9.5+9.5 / -9.5+11 / -11+11 / -11+12.5 / -12.5+12.5 / -12.5+12.5 / -12.5+14.5 / -14.5+14.5 / -14.5+14.5 / -14.5+16 / -16+16 / -16+18 / -18+18 / -18
JS7+6 / -6+7.5 / -7.5+9 / -9+10.5 / -10.5+12.5 / -12.5+12.5 / -12.5+15 / -15+15 / -15+17.5 / -17.5+17.5 / -17.5+20 / -20+20 / -20+20 / -20+23 / -23+23 / -23+23 / -23+26 / -26+26 / -26+28.5 / -28.5+28.5 / -28.5
JS8+9 / -9+11 / -11+13.5 / -13.5+16.5 / -16.5+19.5 / -19.5+19.5 / -19.5+23 / -23+23 / -23+27 / -27+27 / -27+31.5 / -31.5+31.5 / -31.5+31.5 / -31.5+36 / -36+36 / -36+36 / -36+40.5 / -40.5+40.5 / -40.5+44.5 / -44.5+44.5 / -44.5
K6+2 / -6+2 / -7+2 / -9+2 / -11+3 / -13+3 / -13+4 / -15+4 / -15+4 / -18+4 / -18+4 / -21+4 / -21+4 / -21+5 / -24+5 / -24+5 / -24+5 / -27+5 / -27+7 / -29+7 / -29
K7+3 / -9+5 / -10+6 / -12+6 / -15+7 / -18+7 / -18+9 / -21+9 / -21+10 / -25+10 / -25+12 / -28+12 / -28+12 / -28+13 / -33+13 / -33+13 / -33+16 / -36+16 / -36+17 / -40+17 / -40
K8+5 / -13+6 / -16+8 / -19+10 / -23+12 / -27+12 / -27+14 / -32+14 / -32+16 / -38+16 / -38+20 / -43+20 / -43+20 / -43+22 / -50+22 / -50+22 / -50+25 / -56+25 / -56+28 / -61+28 / -61
M6-1 / -9-3 / -12-4 / -15-4 / -17-4 / -20-4 / -20-5 / -24-5 / -24-6 / -28-6 / -28-8 / -33-8 / -33-8 / -33-8 / -37-8 / -37-8 / -37-9 / -41-9 / -41-10 / -46-10 / -46
M70 / -120 / -150 / -180 / -210 / -250 / -250 / -300 / -300 / -350 / -350 / -400 / -400 / -400 / -460 / -460 / -460 / -520 / -520 / -570 / -57
M8+2 / -16+1 / -21+2 / -25+4 / -29+5 / -34+5 / -34+5 / -41+5 / -41+6 / -48+6 / -48+8 / -55+8 / -55+8 / -55+9 / -63+9 / -63+9 / -63+9 / -72+9 / -72+11 / -78+11 / -78
N6-5 / -13-7 / -16-9 / -20-11 / -24-12 / -28-12 / -28-14 / -33-14 / -33-16 / -38-16 / -38-20 / -45-20 / -45-20 / -45-22 / -51-22 / -51-22 / -51-25 / -57-25 / -57-26 / -62-26 / -62
N7-4 / -16-4 / -19-5 / -23-7 / -28-8 / -33-8 / -33-9 / -39-9 / -39-10 / -45-10 / -45-12 / -52-12 / -52-12 / -52-14 / -60-14 / -60-14 / -60-14 / -66-14 / -66-16 / -73-16 / -73
N8-2 / -20-3 / -25-3 / -30-3 / -36-3 / -42-3 / -42-4 / -50-4 / -50-4 / -58-4 / -58-4 / -67-4 / -67-4 / -67-5 / -77-5 / -77-5 / -77-5 / -86-5 / -86-5 / -94-5 / -94
P6-9 / -17-12 / -21-15 / -26-18 / -31-21 / -37-21 / -37-26 / -45-26 / -45-30 / -52-30 / -52-36 / -61-36 / -61-36 / -61-41 / -70-41 / -70-41 / -70-47 / -79-47 / -79-51 / -87-51 / -87
P7-8 / -20-9 / -24-11 / -29-14 / -35-17 / -42-17 / -42-21 / -51-21 / -51-24 / -59-24 / -59-28 / -68-28 / -68-28 / -68-33 / -79-33 / -79-33 / -79-36 / -88-36 / -88-41 / -98-41 / -98
P8-12 / -30-15 / -37-18 / -45-22 / -55-26 / -65-26 / -65-32 / -78-32 / -78-37 / -91-37 / -91-43 / -106-43 / -106-43 / -106-50 / -122-50 / -122-50 / -122-56 / -137-56 / -137-62 / -151-62 / -151
R6-12 / -20-16 / -25-20 / -31-24 / -37-29 / -45-29 / -45-35 / -54-37 / -56-44 / -66-47 / -69-56 / -81-58 / -83-61 / -86-68 / -97-71 / -100-75 / -104-85 / -117-89 / -121-97 / -133-103 / -139
R7-11 / -23-13 / -28-16 / -34-20 / -41-25 / -50-25 / -50-30 / -60-32 / -62-38 / -73-41 / -76-48 / -88-50 / -90-53 / -93-60 / -106-63 / -109-67 / -113-74 / -126-78 / -130-87 / -144-93 / -150

Shafts

Grade>3–6>6–10>10–18>18–30>30–40>40–50>50–65>65–80>80–100>100–120>120–140>140–160>160–180>180–200>200–225>225–250>250–280>280–315>315–355>355–400
a12-270 / -390-280 / -430-290 / -470-300 / -510-310 / -560-320 / -570-340 / -640-360 / -660-380 / -730-410 / -760-460 / -860-520 / -920-580 / -980-660 / -1120-740 / -1200-820 / -1280-920 / -1440-1050 / -1570-1200 / -1770-1350 / -1920
d6-30 / -38-40 / -49-50 / -61-65 / -78-80 / -96-80 / -96-100 / -119-100 / -119-120 / -142-120 / -142-145 / -170-145 / -170-145 / -170-170 / -199-170 / -199-170 / -199-190 / -222-190 / -222-210 / -246-210 / -246
e6-20 / -28-25 / -34-32 / -43-40 / -53-50 / -66-50 / -66-60 / -79-60 / -79-72 / -94-72 / -94-85 / -110-85 / -110-85 / -110-100 / -129-100 / -129-100 / -129-110 / -142-110 / -142-125 / -161-125 / -161
e13-20 -200-25 -245-32 -302-40 -370-50 / -440-50 / -440-60 / -520-60 / -520-72 / -612-72 / -612-85 / -715-85 / -715-85 / -715-100 / -820-100 / -820-100 / -820-110 / -920-110 / -920-125 / -1015-125 / -1015
f5-10 -15-13 -19-16 -24-20 -29-25 / -36-25 / -36-30 / -43-30 / -43-36 / -51-36 / -51-43 / -61-43 / -61-43 / -61-50 / -70-50 / -70-50 / -70-56 / -79-56 / -79-62 / -87-62 / -87
f6-10 / -18-13 / -22-16 / -27-20 / -33-25 / -41-25 / -41-30 / -49-30 / -49-36 / -58-36 / -58-43 / -68-43 / -68-43 / -68-50 / -79-50 / -79-50 / -79-56 / -88-56 / -88-62 / -98-62 / -98
f7-10 / -22-13 / -28-16 / -34-20 / -41-25 / -50-25 / -50-30 / -60-30 / -60-36 / -71-36 / -71-43 / -83-43 / -83-43 / -83-50 / -96-50 / -96-50 / -96-56 / -108-56 / -108-62 / -119-62 / -119
g5-4 / -9-5 / -11-6 / -14-7 / -16-9 / -20-9 / -20-10 / -23-10 / -23-12 / -27-12 / -27-14 / -32-14 / -32-14 / -32-15 / -35-15 / -35-15 / -35-17 / -40-17 / -40-18 / -43-18 / -43
g6-4 / -12-5 / -14-6 / -17-7 / -20-9 / -25-9 / -25-10 / -29-10 / -29-12 / -34-12 / -34-14 / -39-14 / -39-14 / -39-15 / -44-15 / -44-15 / -44-17 / -49-17 / -49-18 / -54-18 / -54
g7-4 / -16-5 / -20-6 / -24-7 / -28-9 / -34-9 / -34-10 / -40-10 / -40-12 / -47-12 / -47-14 / -54-14 / -54-14 / -54-15 / -61-15 / -61-15 / -61-17 / -69-17 / -69-18 / -75-18 / -75
h4-0 / -4-0 / -4-0 / -5-0 / -6-0 / -7-0 / -7-0 / -8-0 / -8-0 / -10-0 / -10-0 / -12-0 / -12-0 / -12-0 / -14-0 / -14-0 / -14-0 / -16-0 / -16-0 / -18-0 / -18
h5-0 / -5-0 / -6-0 / -8-0 / -9-0 / -11-0 / -11-0 / -13-0 / -13-0 / -15-0 / -15-0 / -18-0 / -18-0 / -18-0 / -20-0 / -20-0 / -20-0 / -23-0 / -23-0 / -25-0 / -25
h6-0 / -8-0 / -9-0 / -11-0 / -13-0 / -16-0 / -16-0 / -19-0 / -19-0 / -22-0 / -22-0 / -25-0 / -25-0 / -25-0 / -29-0 / -29-0 / -29-0 / -32-0 / -32-0 / -36-0 / -36
h7-0 / -12-0 / -15-0 / -18-0 / -21-0 / -25-0 / -25-0 / -30-0 / -30-0 / -35-0 / -35-0 / -40-0 / -40-0 / -40-0 / -46-0 / -46-0 / -46-0 / -52-0 / -52-0 / -57-0 / -57
h8-0 / -18-0 / -22-0 / -27-0 / -33-0 / -39-0 / -39-0 / -46-0 / -46-0 / -54-0 / -54-0 / -63-0 / -63-0 / -63-0 / -72-0 / -72-0 / -72-0 / -81-0 / -81-0 / -89-0 / -89
h9-0 / -30-0 / -36-0 / -43-0 / -52-0 / -62-0 / -62-0 / -74-0 / -74-0 / -87-0 / -87-0 / -100-0 / -100-0 / -100-0 / -115-0 / -115-0 / -115-0 / -130-0 / -130-0 / -140-0 / -140
h10-0 / -48-0 / -58-0 / -70-0 / -84-0 / -100-0 / -100-0 / -120-0 / -120-0 / -140-0 / -140-0 / -160-0 / -160-0 / -160-0 / -185-0 / -185-0 / -185-0 / -210-0 / -210-0 / -230-0 / -230
h11-0 / -75-0 / -90-0 / -110-0 / -130-0 / -160-0 / -160-0 / -190-0 / -190-0 / -220-0 / -220-0 / -250-0 / -250-0 / -250-0 / -290-0 / -290-0 / -290-0 / -320-0 / -320-0 / -360-0 / -360
h12-0 / -120-0 / -150-0 / -180-0 / -210-0 / -250-0 / -250-0 / -300-0 / -300-0 / -350-0 / -350-0 / -400-0 / -400-0 / -400-0 / -460-0 / -460-0 / -460-0 / -520-0 / -520-0 / -570-0 / -570
j5+3 / -2+4 / -2+5 / -3+5 / -4+6 / -5+6 / -5+6 / -7+6 / -7+6 / -9+6 / -9+7 / -11+7 / -11+7 / -11+7 / -13+7 / -13+7 / -13+7 / -16+7 / -16+7 / -18+7 / -18
j6+6 / -2+7 / -2+8 / -3+9 / -4+11 / -5+11 / -5+12 / -7+12 / -7+13 / -9+13 / -9+14 / -11+14 / -11+14 / -11+16 / -13+16 / -13+16 / -13+16 / -16+16 / -16+18 / -18+18 / -18
j7+8 / -4+10 / -5+12 / -6+13 / -8+15 / -10+15 / -10+18 / -12+18 / -12+20 / -15+20 / -15+22 / -18+22 / -18+22 / -18+25 / -21+25 / -21+25 / -21+26 / -26+26 / -26+29 / -28+29 / -28
js5+2.5 / -2.5+3 / -3+4 / -4+4.5 / -4.5+5.5 / -5.5+5.5 / -5.5+6.5 / -6.5+6.5 / -6.5+7.5 / -7.5+7.5 / -7.5+9 / -9+9 / -9+9 / -9+10 / -10+10 / -10+10 / -10+11.5 / -11.5+11.5 / -11.5+12.5 / -12.5+12.5 / -12.5
js6+4 / -4+4.5 / -4.5+5.5 / -5.5+6.5 / -6.5+8 / -8+8 / -8+9.5 / -9.5+9.5 / -9.5+11 / -11+11 / -11+12.5 / -12.5+12.5 / -12.5+12.5 / -12.5+14.5 / -14.5+14.5 / -14.5+14.5 / -14.5+16 / -16+16 / -16+18 / -18+18 / -18
js7+6 / -6+7.5 / -7.5+9 / -9+10.5 / -10.5+12.5 / -12.5+12.5 / -12.5+15 / -15+15 / -15+17.5 / -17.5+17.5 / -17.5+20 / -20+20 / -20+20 / -20+23 / -23+23 / -23+23 / -23+26 / -26+26 / -26+28.5 / -28.5+28.5 / -28.5
k5+6 / +1+7 / +1+9 / +1+11 / +2+13 / +2+13 / +2+15 / +2+15 / +2+18 / +3+18 / +3+21 / +3+21 / +3+21 / +3+24 / +4+24 / +4+24 / +4+27 / +4+27 / +4+29 / +4+29 / +4
k6+9 / +1+10 / +1+12 / +1+15 / +2+18 / +2+18 / +2+21 / +2+21 / +2+25 / +3+25 / +3+28 / +3+28 / +3+28 / +3+33 / +4+33 / +4+33 / +4+36 / +4+36 / +4+40 / +4+40 / +4
k7+13 / +1+16 / +1+19 / +1+23 / +2+27 / +2+27 / +2+32 / +2+32 / +2+38 / +3+38 / +3+43 / +3+43 / +3+43 / +3+50 / +4+50 / +4+50 / +4+56 / +4+56 / +4+61 / +4+61 / +4
m5+9 / +4+12 / +6+15 / +7+17 / +8+20 / +9+20 / +9+24 / +11+24 / +11+28 / +13+28 / +13+33 / +15+33 / +15+33 / +15+37 / +17+37 / +17+37 / +17+43 / +20+43 / +20+46 / +21+46 / +21
m6+12 / +4+15 / +6+18 / +7+21 / +8+25 / +9+25 / +9+30 / +11+30 / +11+35 / +13+35 / +13+40 / +15+40 / +15+40 / +15+46 / +17+46 / +17+46 / +17+52 / +20+52 / +20+57 / +21+57 / +21
m7+16 / +4+21 / +6+25 / +7+29 / +8+34 / +9+34 / +9+41 / +11+41 / +11+48 / +13+48 / +13+55 / +15+55 / +15+55 / +15+63 / +17+63 / +17+63 / +17+72 / +20+72 / +20+78 / +21+78 / +21
n5+13 / +8+16 / +10+20 / +12+24 / +15+28 / +17+28 / +17+33 / +20+33 / +20+38 / +23+38 / +23+45 / +27+45 / +27+45 / +27+51 / +31+51 / +31+51 / +31+57 / +34+57 / +34+62 / +37+62 / +37
n6+16 / +8+19 / +10+23 / +12+28 / +15+33 / +17+33 / +17+39 / +20+39 / +20+45 / +23+45 / +23+52 / +27+52 / +27+52 / +27+60 / +31+60 / +31+60 / +31+66 / +34+66 / +34+73 / +37+73 / +37
n7+20 / +8+25 / +10+30 / +12+36 / +15+42 / +17+42 / +17+50 / +20+50 / +20+58 / +23+58 / +23+67 / +27+67 / +27+67 / +27+77 / +31+77 / +31+77 / +31+86 / +34+86 / +34+94 / +37+94 / +37
p5+17 / +12+21 / +15+26 / +18+31 / +22+37 / +26+37 / +26+45 / +32+45 / +32+52 / +37+52 / +37+61 / +43+61 / +43+61 / +43+70 / +50+70 / +50+70 / +50+79 / +56+79 / +56+87 / +62+87 / +62
p6+20 / +12+24 / +15+29 / +18+35 / +22+42 / +26+42 / +26+51 / +32+51 / +32+59 / +37+59 / +37+68 / +43+68 / +43+68 / +43+79 / +50+79 / +50+79 / +50+88 / +56+88 / +56+98 / +62+98 / +62
r6+23 / +15+28 / +19+34 / +23+41 / +28+50 / +34+50 / +34+60 / +41+62 / +43+73 / +51+76 / +54+88 / +63+90 / +65+93 / +68+106 / +77+109 / +80+113 / +84+126 / +94+130 / +98+144 / +108+150 / +114

Source: werktuigbouw.nl’s iso_holes.htm / iso_shafts.htm reference pages, preserved verbatim — only the presentation is modernized.

Example hole-basis fits

A starting point for choosing a shaft tolerance against a given hole tolerance (hole-basis system).

HoleLoose fitTransition fitFixed fit
H6h5j6, k6n5, r5
H7f7, g6, h6k6, m6, n6r6, s6
H8d9, e8, f8, h9—s8, u8, x8

Manufacturing process capability by IT grade

The ISO IT tolerance grade a manufacturing process can reliably achieve, from precision finishing down to rough forming.

ProcessAchievable IT grade
LappingIT2–IT5
HoningIT3–IT5
Super finishingIT4–IT6
Cylindrical grindingIT4–IT7
Diamond turningIT4–IT7
Plan grindingIT5–IT9
BroachingIT5–IT9
ReamingIT5–IT9
Boring, turningIT6–IT12
SawingIT9–IT11
MillingIT9–IT13
Planing, shapingIT10–IT14
ExtrudingIT10–IT13
Cold rolling, drawingIT10–IT14
DrillingIT11–IT14
Die castingIT12–IT15
ForgingIT13–IT16
Sand castingIT14–IT16
Hot rolling, flame cuttingIT14–IT16

Source: werktuigbouw.nl’s shaftfits.htm reference page, preserved verbatim.

ISO Tolerances (ISO 286-2) — Engineering ABC