ASTM Designation Product Size in inches Product Size in mm
No.1 3-1/2" -- 1-1/2" 90 -- 37.5 mm
No.3 2" -- 1" 50 -- 25 mm
No.4 1-1/2" -- 3/4" 37.5 --19 mm
No.5 1" -- 1/2" 25 -- 12.5 mm
No.57 1" -- No.4 25 -- 4.75 mm
No.6 3/4" -- 3/8" 19 -- 9.5 mm
No.67 3/4" -- No.4 19 -- 4.75 mm
No.7 1/2" -- No.4 12.5 -- 4.75 mm
No.78 1/2" -- No.8 12.5 -- 2.36 mm
No.8 3/8" -- No.8 9.5 -- 2.36 mm
No.89 3/8" -- No.16 9.5 -- 1.18 mm
No.10 No.4 -- 0" 4.75 mm

 

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