Dormer A777 Heavy-Duty Cobalt Jobber Drill Bit, 8mm

The Dormer A777 Heavy-Duty Cobalt Jobber Drill Bit is engineered for professional use in demanding applications, particularly where high heat and tough materials are involved. This premium drill bit features a 135° split point, designed to reduce walking and provide immediate engagement, making it ideal for drilling high-tensile materials commonly found in aerospace and industrial applications.

Manufactured from HSCo cobalt steel, this drill bit offers exceptional heat resistance and durability, ensuring extended tool life even under continuous use. The standard helix flute geometry with a thick web provides excellent chip evacuation and enhances stability during operation.

Features & Benefits:

• Bronze surface treatment for reduced friction and improved performance
• Heavy-duty construction for use with tough materials
• Split point geometry to NAS 907 Aerospace Specification (type P3 Point)
• Right-hand spiral design for efficient chip removal

Specifications:

• Tip Diameter: 8.0mm
• Working Length: 75mm
• Overall Length: 117mm
• Material: HSCo Cobalt Steel
• Flute Geometry: Standard Helix, Right-Hand Spiral, Thick Web
• Point Angle: 135° split point (for sizes 1.50mm and above)

Conforming to DIN 338 RN / BS328 / ISO 235 standards, the Dormer A777 is a reliable choice for professionals requiring precision and durability in their drilling operations.