3M 26141, PPS Series 2.0 Adapter, Type S44, 3/8 Female, 19 Thread BSP, 7100158892 
Insize 4120-2D5N, METRIC THREAD RING GAGE, NO GO, M2.5×0.45, 6928640341670
$64.69
Go and No-Go gages are supplied separately.
Class 6g.
Standard ISO1502.
Supplied with manufacturer inspection certificate.
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