Osg 3G-OTH-273390 — Technical Specifications

Name: Osg 3G-OTH-273390 OSG Screw Thread Insert STI Tap: Spiral Fute, 7/16"-20 UNF, H4 / 2B-3B, 3 Flute, Bottoming Chamfer (MPN 8017500). Key specifications — attr1299996: H4 / 2B-3B.
Brand: Osg

The OSG Screw Thread Insert STI Tap (SKU 33ZF57, MPN 8017500) is a spiral-flute tap for 7/16"-20 UNF threads, featuring a bottoming chamfer and three flutes. It is ground to H4 tolerance for 2B-3B class fit, enabling consistent thread forming in industrial applications.

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Technical Specifications

Parameter	Value
UNF	7/16"-20
Type	H4 / 2B-3B, Bottoming Chamfer
Flute	3
Manufacturer Part Number	8017500