Dormer A777 HSCo Heavy-Duty Jobber Drill 4.80 mm OL 86 mm WL 52 mm

The Dormer A777 HSCo Heavy-Duty Jobber Drill is engineered for precision drilling in a range of materials, with particular suitability for tougher applications such as those encountered in high-tensile contexts. Crafted from cobalt-based HSS-E and finished with a bronze coating, this drill bit emphasizes durability and efficient cutting performance. It features a 135° split point designed to aid self-centering and reduce heat buildup during drilling, making it well-suited for demanding materials. The drill’s geometry supports reliable operation in metal, plastic, and wood when used with standard drill chucks or drill presses, and its dimensions and tolerances align with DIN 338 specifications. This combination of material, coating, and geometry aims to provide enhanced performance in challenging workpieces.

Features

• 135° split point for self-centering
• HSCo cobalt steel with bronze coating
• Heavy-duty design for tough materials
• Bronze finish identifies cobalt substrate
• 4xD perforation depth

Technical specifications

• Tip diameter: 4.80 mm
• Overall length: 86 mm
• Working length: 52 mm
• Shank: Cylindrical
• Material: HSCo with bronze coating
• Standard: DIN 338
• Point angle: 135°
• Nominal tolerance: h8
• Compatible with standard drill chucks