Tool-Flo TF34990AC3R FLTB-2RM116R 70°/55° Threading Insert (10 Pcs)
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This is a factory-new 10-piece box of Tool-Flo (IMC Group) TF34990AC3R carbide threading inserts, full part number FLTB-2RM116R 70°/55° AC3R. The "FLTB" prefix designates a full-profile laydown threading blade insert; "2RM" indicates a 2-edge right-hand multi-flank geometry; "116R" denotes the 11/16 in (11-16 TPI) pitch range covered; the combined 70°/55° designation confirms this insert profiles both UN/UNF (60°) and Whitworth/BSW (55°) thread forms in a single insert design — the 70°/55° flank angles bracket both standards at a laydown geometry rake. The grade is AC3R, Tool-Flo's CVD/PVD multi-layer TiAlN-based coated carbide substrate optimized for threading steel, stainless, and alloy steels at moderate-to-high cutting speeds. Each insert stamps "TF34990" on the body and "732" indicating grade lot; the insert seats into Tool-Flo FLTB-style laydown threading toolholders. The box label confirms 10 pcs, U.S. manufacture date 05/10/21, and Grainger/distributor item number 2491620 — QC Inspected seal intact.
Product Specifications
| Brand | Tool-Flo (IMC Group) |
| MPN | TF34990AC3R |
| Full Catalog Number | FLTB-2RM116R 70°/55° AC3R |
| Insert Style | Laydown Threading Blade Insert (FLTB) |
| Hand of Cut | Right-Hand (R) |
| Number of Edges | 2 |
| Thread Form | UN/UNF 60° & Whitworth 55° (70°/55° flank) |
| Pitch Range | 11-16 TPI (116R) |
| Grade | AC3R |
| Coating | TiAlN multi-layer CVD/PVD |
| Substrate | Cemented carbide |
| Country of Origin | United States |
| Quantity per Package | 10 pcs |
| Condition | New |
| Manufacture Date | 05/10/2021 |
| Item Number | 2491620 |
| Compatible Toolholder Style | Tool-Flo FLTB laydown threading holders |