统一螺钉（UNM）标称尺寸（MM）编号的Waters Ring量表。 2 螺纹量表 WR2-64UNF2A

Gage type: Street, stop
Grade (class): 2A
Gauge type: ANSI B1.2
Nominal dimension (mm): NO.2
Pitch (mm): 64
Grade (class): 2A
Pitch (number of peaks/inch): 64
Nominal dimension: No.2
Gauge type: Street, stop

ohns（相当于JIS SKS3）

24g

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