Carmex Thread Mills Mini Type - Through Coolant - UN (UNC UNF UNEF UNS) - No. 4 x 40 - MT7 Boring Bar Blank helping you finish parts faster

helping you finish parts faster with less rework and more consistent results across everyday workshop applications

This combination delivers reliable performance in busy shops

Built to accommodate Stub Acme geometry and left‑hand threads

ideal for applications where ISO H4 accuracy is required

The six-flute stub design enhances swarf removal and finish quality for precise

Carmex Thread Mills Mini Type - Through Coolant - UN (UNC UNF UNEF UNS) - No. 4 x 40 - MT7 Boring Bar Blank helping you finish parts fasterCarmexs Thread Mills Mini Type with through coolant is a precision solid carbide cutter designed for small diameter internal threading in pre drilled holes. Built for UN thread forms, it delivers reliable performance in tight spaces with efficient chip evacuation. Tool type: Solid carbide thread milling cutter (MTSB) with an internal coolant bore Coolant delivery: Through tool coolant bore provides high pressure liquid directly to the cutting edge,