Tool-Flo 16IR 16UN AC22A Grade AC22 Carbide Threading Insert (5 Pcs)
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The Tool-Flo 16IR 16UN AC22A is a triangular (60°) carbide threading insert designed for internal right-hand threading of Unified National (UN) thread forms, covering a thread pitch range of 16 TPI. The full designation decodes as follows: "16" = IC (inscribed circle) size 16 mm, "IR" = internal right-hand, "16UN" = 16 threads per inch Unified National profile, "AC22A" = grade AC22 with chipbreaker geometry "A." Grade AC22 is a Tool-Flo (IMC Group) PVD-coated carbide grade engineered for threading steel and stainless steel, offering a combination of wear resistance and toughness suited to interrupted cuts and variable-pitch threading operations. These new inserts are manufactured in Israel to ISO threading insert standards and are compatible with standard 16-series internal threading toolholders requiring a triangular threading insert seat; each factory-sealed cassette contains 5 pieces.
Product Specifications
| Brand | Tool-Flo (IMC Group) |
| Part Number (MPN) | 16IR 16UN AC22A |
| Insert Shape | Triangular (60° thread form) |
| Cutting Direction | Internal Right-Hand (IR) |
| Thread Standard | Unified National (UN) |
| Thread Pitch | 16 TPI |
| Insert Size (IC) | 16 mm inscribed circle |
| Grade | AC22 |
| Substrate | Carbide |
| Coating | PVD (AC22 grade) |
| Quantity per Package | 5 pcs |
| Country of Origin | Israel |
| Condition | New |
| Manufacturer Item No. | 1269005 |
| Compatible Toolholder Series | 16-series internal threading holders |