Dynabrade 98269 1/2" Female Coupler 
3M 26054, PPS Series 2.0 Adapter, Type S18, 3/8 Female, 18 Thread NPS,
4 per case 
Insize 7321-T13, SCREW THREAD POINT, 24-14TPI/1-1.75mm, pair, 6928640348488
$38.59
internal thread (60? thread angle)
SCREW THREAD POINT, 24-14TPI/1-1.75mm, pair
For use with Screw Thread Microsmeter Series # 3281
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