Carmex 40 I 16 UN MT7 Carbide Thread Milling Insert (2 Pack)

The Carmex 40 I 16 UN MT7 is a new, indexable solid carbide thread milling insert designed for full-profile UN (Unified National) thread milling at 16 TPI (threads per inch). The designation breaks down as follows: "40" indicates the insert length class, "I" denotes an internal thread form, "16" is the pitch in threads per inch (16 TPI), "UN" specifies the Unified National thread standard, and "MT7" is Carmex's grade designation — a submicron-grain carbide substrate with a TiAlN-family PVD coating optimized for hardened steels, stainless steels, and high-temp alloys. These inserts mount into Carmex thread milling toolholders and produce a full-profile thread form in a helical interpolation path on CNC machining centers, generating accurate UN thread forms in a single pass per depth of cut. The box label (Job No. 24766) confirms this is a factory-packaged set of 3 inserts, all new and unused.

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