ISO Tolerances For Fasteners | ISO Tolerance Chart | ISO & Metric Standards | ISO Steel Pipe Tube and Fittings Standard | ISO 2768 | ISO 8062 BS6615 Casting Tolerance Standard | Rough Casting Tolerance

OverInc78910111213
1mm3mm0.0090.0140.0250.0400.060.090.14
3mm6 mm0.0120.0180.0300.0480.070.120.18
6mm10 mm0.0150.0220.0360.0580.090.150.22
10mm18mm0.0180.0270.0430.0700.110.180.27
18mm30mm0.0210.0330.0520.0840.130.210.33
30mm50mm0.0250.0390.0620.1000.160.250.39
50mm80mm0.0300.0460.0740.1200.190.300.46
80mm120mm0.0350.0540.0870.1400.220.350.54
120mm180mm
0.0630.1000.1600.250.400.63
180mm250mm
0.1850.290.460.72
250mm315mm
0.320.520.81
315mm400mm
0.360.570.89
400mm500mm
0.400.630.97
500mm--
0.440.701.10

(minus), j (plus/minus), k (plus)

Example – 90mm Ø h10 = +0/-0.140, j10 = +0.07/-0.07, k10 = +0.140/-0

 

Machining Process associated with ISO IT Tolerance Grade

IT Grade2345678910111213141516
Lapping
Honing
Superfinishing
Cylinderical grinding
Diamond turning
Plan grinding
Broaching
Reaming
Boring, Turning
Sawing
Milling
Planing, Shaping
Extruding
Cold RollingDrawing
Drilling
Die Casting
Forging
Sand Casting
Hot rolling, Flame cutting

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