Recommended Tolerances
"A1" High Precision
Size (inches) Fixed Closure Size (mm) Fixed Closure
  above   include
  above   include
0.00 - 0.40
   .004
   .005
000 - 010
    .10
    .13
0.40 - 0.63
.005
.006
010 - 016
.13
.16
0.63 - 1.00
.006
.008
016 - 025
.16
.20
1.00 - 1.60
.008
.010
025 - 040
.20
.25
1.60 - 2.50
.010
.013
040 - 063
.25
.32
2.50 - 4.00
.013
.016
063 - 100
.32
.40
4.00 - 6.30
.016
.020
100 - 160
.40
.50
           
           
"A2" High Precision
Size (inches)
Fixed
Closure
Size (mm)
Fixed
Closure
  above   include
  above   include
0.00 - 0.40
   .006
   .008
000 - 010
    .16
    .20
0.40 - 0.63
.008
.010
010 - 016
.20
.25
0.63 - 1.00
.010
.013
016 - 025
.25
.32
1.00 - 1.60
.013
.016
025 - 040
.32
.40
1.60 - 2.50
.016
.020
040 - 063
.40
.50
2.50 - 4.00
.020
.025
063 - 100
.50
.63
4.00 - 6.30
.025
.032
100 - 160
.63
.80
6.30 & over - To find the fixed dimension tolerance multiply by 0.4%
           
           
"A3" HighPrecision
Size (inches)
Fixed
Closure
Size (mm)
Fixed
Closure
  above   include
  above   include
0.00 - 0.40
   .008
   .013
000 - 010
    .20
   0.32
0.40 - 0.63
.010
.016
010 - 016
.25
0.40
0.63 - 1.00
.013
.020
016 - 025
.32
0.50
1.00 - 1.60
.016
.025
025 - 040
.40
0.63
1.60 - 2.50
.020
.032
040 - 063
.50
0.80
2.50 - 4.00
.025
.040
063 - 100
.63
1.00
4.00 - 6.30
.032
.050
100 - 160
.80
1.25
6.30 & over - To find the fixed dimension tolerance multiply by 0.5%
 


 

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