Threading inserts and grades
Threads created by thread milling, thread turning, tapping, or thread whirling must meet and exceed the rigorous standards and tolerances set by the oil and gas, automotive, medical, and aerospace industries. Find the insert and/or grade here for achieving high-quality thread profiles with excellent chip control and surface finish.
GC1125
GC1125 is the First Choice grade for ISO P, M, K, and N materials in CoroThread® 266. This PVD-coated grade combines the superior wear resistance of a coated grade with the edge sharpness and toughness of an uncoated grade. Optimized for steel threading and for medium to high speeds.Benefits and features
Find your grade
The wide range of carbide threading grades from Sandvik Coromant offers high productivity for many materials and applications. Select the most suitable tool for the operation, and use the table to find the grade and geometry that best match the application requirements.
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CoroThread® 266 |
T-Max® U-Lock |
CoroCut® MB |
Learn more about CoroTurn® XS |
Learn more about CoroCut® XS |
T-Max® Twin-Lock |
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External &
Internal |
Internal Ø 12–20 (Ø ½–¾") |
Internal Ø 10–12 (Ø ⅜–¾") |
Internal Ø 4.2–10 (Ø 1/6–½") |
External -fine pitch |
External & Internal O&G threading |
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| Steel | P |
A GC1125 |
A GC1020 |
GC1025 |
GC1025 |
GC1025 |
GC1125 |
| Low carbon steel | P 1.1 |
C GC1125 |
F GC1020 |
GC1025 |
GC1025 |
GC1105 |
GC1125 |
| Stainless steel | M |
F GC1135 |
F GC1020 |
GC1025 |
GC1025 |
GC1105 |
GC4125 |
| Cast iron | K |
A GC1125 |
A GC1020 |
GC1025 |
GC1025 |
GC1025 |
GC4125 |
| Non-ferrous metals | N |
F GC1125 |
F GC1020 |
GC1025 |
GC1025 |
GC1105 |
— |
| HRSA and titanium | S |
F GC1135 |
F GC1020 |
GC1025 |
GC1025 |
GC1105 |
GC4125 |
| Hardened steel | H |
CB7015 |
— | — |
CB7015 |
— | — |
GC1125
PVD TiCrAlN grade for ISO P, M, K, and N materials. Combines the superior wear resistance of a coated grade with the edge sharpness and toughness of an uncoated grade. Optimized for steel threading and for medium to high speeds.
GC1135
PVD TiCrAlN grade for ISO M, S, P, and K materials, optimized for stainless steel and heat-resistant super alloys. The best choice for sharp profiles in all materials and for low to medium speeds.
GC1105
A PVD-coated carbide grade with high hot hardness and a good combination with the sharpest cutting edges. Specially suited for low carbon, stainless steel, and heat-resistant super alloys.
GC1025
A PVD-coated all-round grade for toughness demanding operations. Recommended for small part machining at low cutting speed.
CB7015
Brazed CBN-tippped inserts ideal for threading hardened components. Can be applied in the hardness range HRc 55–62 and for finishing at limited cutting depths and eliminates the need for grinding operations.
Complementary grades
Highlights
CoroPlus® ToolGuide
Let CoroPlus® ToolGuide find quick and accurate tool recommendations—on all your devices!
Get the Most from Your Thread Turning
Learn more about how to use your thread turning tools for the best tool life, productivity, and chip control.
iLock™ Technology
Learn how to prevent cutting forces from affecting tool position with iLock™. This technology uses rails or serrations on the tool holder and corresponding slots on the insert to create a tight lock.
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