Waters Plage量表用于统一螺钉（UNM）名义尺寸（MM）编号。 2 线程仪 WP9/16-18UNF2B

Gage type: ANSI B1.2
Nominal dimension (mm): 9/16
Pitch (mm): 18
Grade (class): 2B
Pitch (number of peaks/inch): 18
Nominal dimension: 9/16
Gage type: Street/Stop

ohns（相当于JIS SKS3）

280G

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