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TORX PLUS Cutting Tool Screw

Cutting tool screw in alloy tool steel at property class 12.9, TiN or TiAlN coated, for insert clamping in turning and milling.

Key specifications

MaterialAlloy Tool Steel
Installationtorqued to the tool maker's value
StandardGB/T 3098.1, ISO 16047
Typical substrateindexable carbide inserts
Key inspectionshead cone, recess, thread gauging, hardness

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Product overviewOverview

The head cone or face centres the insert in its pocket, and the star recess delivers torque through a small head diameter. The coating follows cutting temperature: TiN is used up to roughly 600 °C in general turning, TiAlN resists oxidation to about 800 °C where the insert runs hot. Coating also lowers thread friction, so the same torque produces a higher clamp force than an uncoated screw.

Material: Alloy Tool Steel. It is tightened to the torque the tool maker publishes.

Key featuresFeatures

TiN for general turning, TiAlN where the insert runs hot.
Alloy steel quenched and tempered to class 12.9, with strength and hardness to GB/T 3098.1.
Star recess transmits the tool maker's torque without cam-out in a restricted head diameter.
Head cone seats the insert concentrically, so tip position repeats after a change.

Typical applicationsApplications

Swiss-type lathe tool stations
Fine boring and adjustment heads
CNC turning insert clamping

Selection notesSelection

Use the coated-screw torque value from the tool maker: the same setting on a coated and an uncoated screw gives different clamp force.

Frequently asked questionsFAQ

Does the coating change the torque setting?

Yes. A coated thread has a lower friction coefficient, so the same torque gives more clamp force and can over-stress the insert seat. Torque must be taken from the tool maker for the coated condition.

What matters during installation of the TORX PLUS Cutting Tool Screw?

Tighten it to the torque the tool maker publishes. TiN for general turning, TiAlN where the insert runs hot.

Specifications

Material	Alloy Tool Steel
Property Class	Grade 12.9
Surface Treatment	TiN / TiAlN coating
Standard	GB/T 3098.1, ISO 16047
Drive	star recess
Installation	torqued to the tool maker's value
Typical substrate	indexable carbide inserts
Key inspections	head cone, recess, thread gauging, hardness

Manufacturing and inspection

Head cone angle and recess are checked on a profile projector, threads gauged 6g on every part.We recommend a pilot assembly at the actual torque and mating part before locking the process parameters for volume.