DIN 373 HSS-TiN Countersink Bit with Fixed Guide - Ruko

For producing countersinks for cylindrical head screws, self-tapping screws, and self-threading screws. Ideal for burr-free, chatter-free deburring and countersinking.
Ruko DIN 373 HSS-TiN flat countersinks with fixed guide are the ideal choice for those seeking quality and reliability in countersinking operations. Thanks to their titanium nitride (TiN) coating, these tools offer superior durability and excellent performance even under the most intensive machining conditions.
The fixed guide guarantees pinpoint precision and stability during use, while the DIN 373 geometry ensures perfect results on any type of material. Ideal for professional workshops and DIY enthusiasts who don't want to compromise on quality.
Better results are achieved at low cutting speeds.

Advantages:

• Longer life thanks to TiN coating
• Constant precision with fixed guide
• Suitable for professional and hobby use
• Compliance with DIN 373 standards
• RUKO certified quality

Code Article: 102403T
SAP: 1000035949
Nominal Thread: (M)M5
Net Weight: 34g
Stem Diameter: 8.00mm
Diameter: 10.0mm
Guide Diameter: 5.3mm
Length: 80.0mm

Product certification: DIN 373 standard (Deutsches Institut für Normung) This standard defines:

• Tool type: Countersinks with a 180° angle (i.e. a completely flat shoulder perpendicular to the axis of the hole).
• Function: They are designed to create a cylindrical recess (a "seat") around an existing hole. This recess serves to "hide" or countersink the heads of certain screws (such as pan head screws or hexagon socket screws, e.g., DIN 912) so that they remain flush with the surface of the workpiece.
• Features: The standard specifies the tolerances and critical dimensions of the tool, related to the size of the screw for which it is intended (e.g. M5, M6, M10), ensuring that the tool is interchangeable and compatible with standardized components.
• Fixed guide: DIN 373 includes the concept of a cylindrical guide (the "pilot") that enters the through hole or center hole to ensure that the countersink is perfectly coaxial (centered) with respect to the hole itself, improving accuracy.

Technical Data

• Number of Cutting Edges: 3
• Countersink Angle: 180°
• DIN Standard: 373
• Material: HSS - High Speed ​​Steel
• Coating: TiN - Titanium Nitride
• Cutting Direction: Right-Handed Cutting
• Stem: Cylindrical

Scope of Application

Main application:

• Steel with tensile strength up to 900 N/ mm²
  
• Brass
• Plastic Materials

Other Applications:

• Steel with tensile strength up to 1,100 N/mm²
• Stainless steel
• Bronze
• Cast iron

📦 Shipping to Italy and Europe: €6.90
* Product shipped directly from the European supplier

GTIN: 4007140117342