Mueller Kueps 404 408 Spot Welding Drill Bit HSSE-TICN 8 x 44 mm

Key Facts

• HSSE spot weld drill bit with TiCN (Titanium Carbon Nitride) PVD coating
• 8 mm diameter and 44 mm overall length for precise spot weld removal
• Designed for high cutting speeds and extended tool life
• Optimized for interrupted cuts common in spot weld drilling applications
• Durable construction improves performance and profitability in repeated use

Overview

This HSSE-TiCN Spot Welding Drill Bit (8 x 44 mm) is engineered for efficient removal of spot welds in automotive and metal fabrication applications. The high-speed steel with cobalt (HSSE) construction delivers strength and heat resistance, while the TiCN PVD coating enhances hardness, reduces friction, and extends tool life under demanding conditions.

Designed specifically for interrupted cutting operations, this drill bit maintains stability and cutting efficiency even when drilling through layered or welded materials. It is an excellent choice for professionals seeking durability, speed, and consistent performance.

Product images are for reference only and may vary.

Features

• TiCN (Titanium Carbon Nitride) PVD coating for increased wear resistance
• High cutting speed capability for faster job completion
• HSSE construction provides strength and thermal resistance
• Performs well in interrupted cuts such as spot weld removal
• Extended tool life reduces replacement frequency

Technical Specifications

• Type: Spot Welding Drill Bit
• Material: HSSE (High-Speed Steel with Cobalt)
• Coating: TiCN (Titanium Carbon Nitride), PVD
• Diameter: 8 mm (0.315 in)
• Overall Length: 44 mm (1.73 in)

Compatibility

• Suitable for use with standard drill motors and machining tools
• Compatible with sheet metal and welded metal assemblies

Use Cases

• Removing spot welds in automotive body repair
• Metal fabrication and panel separation tasks
• Industrial maintenance involving welded components

What’s Included

• 1 × Spot Welding Drill Bit HSSE-TiCN 8 x 44 mm

Category FAQs

• What is a spot weld drill bit used for?
  It is designed to remove spot welds without damaging the underlying metal layers.
• What does TiCN coating do?
  TiCN coating increases hardness, reduces friction, and improves wear resistance for longer tool life.
• Can this drill bit be used on regular steel?
  Yes, it can be used on various metal types, especially in welded or layered applications.
• Why is HSSE used instead of standard HSS?
  HSSE offers better heat resistance and durability, making it suitable for demanding cutting conditions.
• Is this suitable for high-speed drilling?
  Yes, it is designed to operate at high cutting speeds while maintaining performance.
• What are interrupted cuts?
  Interrupted cuts occur when the tool repeatedly enters and exits the material, such as when drilling through spot welds.
• Does this bit require coolant?
  Coolant is recommended to extend tool life and improve cutting performance, especially in continuous use.
• How do I choose the right size?
  Select a size that matches the spot weld diameter and application requirements for optimal results.