3M 33446, Cubitron II File Belt, 80+, 1/2 in x 18 in (12.7 mm x 457.2 mm), 7100033186, 10 belts per carton, 5 cartons per case 
3M 26137, PPS Series 2.0 Adapter, Type S41, Trapezoidal Thread - QCC, 7100135947 
Insize 7321-T15, SCREW THREAD POINT, 8-5TPI/3.5-5mm, pair, 6928640348501
$38.59
internal thread (60? thread angle)
SCREW THREAD POINT, 8-5TPI/3.5-5mm, pair
For use with Screw Thread Microsmeter Series # 3281
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