Gauge Blocks Tolerances Specifications Table JIS B 7506

Tolerances, Engineering Design & Limits & Fits

Accuracy Specifications of Gage Blocks by JIS B 7506-1997 Japan standard at 20˚C.

Note: JIS B 7506-1997 standards are the same as DIN 861-1980 standards.

Nominal length
(mm)

Grade K

Grade 0

Grade 1

Grade 2

Tolerance on length
at any point (µm)

Permissible variation
in length (µm)

Tolerance on length
at any point (µm)

Permissible variation
in length (µm)

Tolerance on length
at any point (µm)

Permissible variation
in length (µm)

Tolerance on length
at any point (µm)

Permissible variation
in length (µm)

from 0.5

up to 10

±0.20

0.05

±0.12

0.10

±0.20

0.16

±0.45

0.30

over 10

up to 25

±0.30

0.05

±0.14

0.10

±0.30

0.16

±0.60

0.30

over 25

up to 50

±0.40

0.06

±0.20

0.10

±0.40

0.18

±0.80

0.30

over 50

up to 75

±0.50

0.06

±0.25

0.12

±0.50

0.18

±1.00

0.35

over 75

up to 100

±0.60

0.07

±0.30

0.12

±0.60

0.20

±1.20

0.35

over 100

up to 150

±0.80

0.08

±0.40

0.14

±0.80

0.20

±1.60

0.40

over 150

up to 200

±1.00

0.09

±0.50

0.16

±1.00

0.25

±2.00

0.40

over 200

up to 250

±1.20

0.10

±0.60

0.16

±1.20

0.25

±2.40

0.45

over 250

up to 300

±1.40

0.10

±0.70

0.18

±1.40

0.25

±2.80

0.50

over 300

up to 400

±1.80

0.12

±0.90

0.20

±1.80

0..30

±3.60

0.50

over 400

up to 500

±2.20

0.14

±1.10

0.25

±2.20

0.35

±4.40

0.60

over 500

up to 600

±2.60

0.16

±1.30

0.25

±2.60

0.40

±5.00

0.70

over 600

up to 700

±3.00

0.18

±1.50

0.30

±3.00

0.45

±6.00

0.70

over 700

up to 800

±3.40

0.20

±1.70

0.30

±3.40

0.50

±6.50

0.80

over 800

up to 900

±3.80

0.20

±1.90

0.35

±3.80

0.50

±7.50

0.90

over 900

up to 1000

±4.20

0.25

±2.00

0.40

±4.20

0.60

±8.0

1.00

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