STHOR 16-4D — toolholder, 1.000" square shank, 6.0" overall length. Made in the USA by RMC Tooling.
Gang Toolholder for Shallow Grooving or I.D. Threading for Triangle TCMC Inserts.
Indexable turning toolholder from RMC Tooling, machined in the United States. The shank is ground to a qualified reference surface, so the tool goes back into the turret at the same cutting-point location every time it is swapped — no re-touching off, no lost setup.
Built for production lathes and CNC turning centers. The insert pocket, seat and clamping hardware are all standard RMC service parts, listed below, so the holder stays in service for years instead of being scrapped when a clamp screw strips.
These are the service parts RMC lists for this exact model — not a generic cross-reference. Availability of replacement parts varies by item.
| Insert | TNMC-432 — 1/2" I.C. · 3/16" thick · 1/32" nose radius |
| Insert screw | GTS-2 |
| Torx key | T-20 — Torx Wrench |
See all RMC spare parts & hardware →
Not sure how to read an insert code? Turning insert designation explained.
Dimensions as published in the RMC 2020 catalog, page 37.
RMC toolholder availability varies. When replenishment is required, estimated time to ship is 4–6 weeks. Please contact us for availability of this item.
Estimated time to ship is measured in calendar days, from order placement until your order is handed to the carrier. Carrier transit time is additional. Orders may ship sooner. We accept orders awaiting replenishment; please contact us before ordering if you need a specific shipping date.
See our Shipping Policy for details.
