STANDARDS & TOLERANCES ( ISO 3290 - 1998 )
Grade Variation of Deviation Surface Lot diameter Gauge Preferred Subgauge Subgauges
ball diameter from spherical roughness Variation Interval gauges Interval
VDws Max. form tDw Max. Ra Max. VDwL Max. IG
G3 0.08 0.08 0.01 0.1 0.5 -5,..-0.5 0,+0.5,...+5 0.1 -0.3 0, + 0.1+ 0.2
G 5 0.13 0.13 0.014 0.25 1 -5,.. -1, 0,+1,...+5 0.2 -0.6 0, + 0.2+ 0.4
G 10 0.25 0.25 0.02 0.5 1 -9,.. -1, 0,+1,...+9 0.2 -0.6 0, + 0.2+ 0.4
G 16 0.4 0.4 0.025 0.8 2 -10,..-2, 0,+2,...+10 0.4 -1.2 0, + 0.4+ 0.8
G 20 0.5 0.5 0.032 1 2 -10,..-2, 0,+2,...+10 0.4 -1.2 0, + 0.4+ 0.8
G 24 0.6 0.6 0.04 1.2 2 12,..-2, 0,+2,...+12
G 28 0.7 0.7 0.05 1.4 2 -12,..-2, 0,+2,...+12 0.4 -0.8 - 0.4 0, +0.4+ 0.8
G 40 1 1 0.060 2 4 -16,..-4, 0,+4,...+16 0.8 -1.6 - 0.8 0, + 0.8+1.6
G 60 1.5 1.5 0.080 3 6 -18,..-6, 0,+6,...+18 1.2 -2.4 - 1.2 0, +1.2+2.4
G100 2.5 2.5 0.100 5 10 -40,..-10, 0,+10,...+40 2 -6 0, +2, +4
G 200 5 5 0.15 10 15 -60,..-15, 0,+15,...+60 3 -9 0, +3, +6
G 500* 12.5 12.5 25
G 1000* 25 25 50
According to AFBMA Standards
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