9/16x18 UNF -2A LEFT HAND Go or No-Go Screw Ring Thread Gauge

Product: 9/16" x 18 UNF - 2A Screw Ring Thread Gauges LEFT HAND Size: 9/16 x 18 tpi Unified National Fine Type: 9/16" UNF Go / No-Go Ring Gauge BS1580, BS 919 Part 1 Class 2A Options: Go or No-Go Ring UKAS Calibration adds 7 days see options box

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