,

TX vs IP vs HEX — The 3 Most Common CNC Bits

In CNC machining, choosing the right bit is just as important as selecting the correct tool holder or torque setting.
Different screw profiles affect torque transfer, slippage resistance, and overall assembly stability.

For CNC machinists, the three most commonly used bit types are TX (Torx), IP (Internal Plus), and HEX.
Here’s a clear breakdown of how they differ and when to use each one.

Why CNC Machinists Need to Understand Different Bit Types

CNC machines rely heavily on precise fastening — from tool holders and fixtures to enclosure panels and modular parts.
Using the wrong bit can lead to:

  • Slippage (stripping the screw head)

  • Poor torque transfer

  • Inconsistent tightening

  • Faster tool wear

To maintain accuracy and repeatability, CNC operators must use the correct bit shape that matches both torque requirements and application demands.

TX (Torx / Star) — High Torque & Anti-Slip

  • Six-point star-shaped design

  • Excellent torque transmission

  • Reduced cam-out (slippage)

  • Ideal for medium to high-torque applications

TX screws are widely used in CNC environments because they provide better grip and less wear, increasing both bit life and screw life.

Best for:

  • Tool holder covers

  • Machine maintenance

  • Applications requiring stable torque without slippage

 

IP (Internal Plus) — Enhanced Grip for High Torque

IP (Internal Plus) is often seen as an improved version of TX.

  • Better contact area than standard TX

  • Designed for higher torque transfer

  • Excellent for applications that require maximum precision

  • Common in aerospace, medical, and automotive CNC systems

Because the geometry increases bit–screw engagement, IP bits minimize tool wear and reduce the risk of screw damage.

Best for:

  • Aerospace CNC components

  • High-torque machine assembly

  • Precision fastening tasks

HEX (Hexagonal) — The Most Common & Versatile

HEX is the most universal bit type used across almost all industries.

  • Simple six-sided design

  • Easy to find and replace

  • Works well for basic assembly and general tightening

  • Common in both CNC machining and general mechanical work

Though HEX bits are versatile, they are more prone to cam-out under higher torque, especially compared to TX or IP.

Best for:

  • General CNC assembly

  • Fixtures and modular plates

  • Light-torque applications

Comparison Table: TX vs IP vs HEX

FeatureTX (Torx)IP (Internal Plus)HEX
Torque Transfer★★★★☆★★★★★★★★☆☆
Anti-Slip Resistance★★★★☆★★★★★★★☆☆☆
PrecisionHighVery HighModerate
Best UseCNC maintenanceHigh-torque CNC assemblyGeneral CNC work
Screw ProtectionGoodExcellentModerate
AvailabilityHighMediumVery High

Why CNC Machinists Choose SLOKY Bits

CNC-Machined Accuracy (Not Cheap Forging)

Most bits are forged, which means tolerances vary.
SLOKY Bits are fully CNC-machined, ensuring:

  • Perfect geometry

  • Better screw engagement

  • Less slippage

  • Easier tightening

  • Longer screw and bit life

More accuracy → fewer mistakes → faster tool changes.

Premium German Alloy Steel — Built for Durability

  • Hardness: HRC 58° ~ 60°

  • Material: High alloy German steel

  • Standard: 1/4″ DIN3126-C6.3 / DIN3126-E6.3

This gives SLOKY Bits superior:

  • Wear resistance

  • Torque stability

  • Deformation resistance

Perfect for CNC operators who perform dozens or hundreds of tool changes a day.

Color-Coded for Error-Proof Operation

Wrong torque is worse than no torque.

SLOKY eliminates this risk with a color-coded system that matches:

  • Bit size

  • Torque adapter value

  • Application type

Match the color → choose the right bit → apply the correct torque.
Fast, visual, foolproof.

Shopping Cart
Scroll to Top