Original Dormer A-225 HSS Center Drill Bit — BS 328, 120° Point Angle, Right Hand (No.1 – No.6)

HIGHLIGHTS:

We sell only Original Dormer cutting tools — trusted worldwide for their precision, durability, and consistent manufacturing quality. The Dormer A-225 HSS Center Drill Bit is designed for accurate center hole drilling, starting holes, and preparing workpieces before drilling, turning, or machining operations. The Dormer A225 centre drill has a point angle of 120° and a countersink angle of 60°, manufactured to BS 328, right handed, and finished bright. It is used for drilling components that require machining between centres, helping create a precise starting point that reduces drill wandering and improves hole alignment.

As a genuine Dormer product, the A-225 is manufactured to the brand's exacting quality standards, ensuring consistent geometry, reliable cutting performance, and long service life across every size in the range — a level of quality assurance that imitation or unbranded center drills cannot guarantee. Made for metalworking and workshop applications, the A-225 is suitable for machinists, fabrication shops, metalworking users, maintenance teams, and industrial workshops that require dependable center drilling for general machining preparation. It is a British Standard centre drill designed for general machining applications up to 1x diameter, for drilling components which require machining between centres.

Available across 7 sizes from No.1 (1/8") through No.6 (5/8"), the A-225 series covers a broad range of center drilling diameter requirements for lathe work, fabrication, and general machine shop use.

FEATURES:

• Original Dormer Product – Guaranteed genuine Dormer tool, manufactured to the brand's exacting quality and precision standards.
• HSS (High Speed Steel) Construction – Durable material suitable for drilling a wide range of metals including steel, aluminum, and stainless steel.
• 120° Point Angle with 60° Countersink – Designed for drilling components that require machining between centres.
• Manufactured to BS 328 Standard – Meets recognized British Standard specifications for center drills.
• Right Hand, Bright Finish – Standard right-hand cutting direction with a bright surface finish.
• Reduces Drill Wandering – Creates a precise starting point that improves hole positioning and alignment during machining preparation.
• 7 Sizes Available (No.1 – No.6) – Covers a broad range of center drilling diameters from 1/8" to 5/8".
• Suitable for Hand and Machine Use – Versatile for use in both conventional and machine-based drilling setups.

APPLICATIONS:

• Center drilling and starting hole preparation
• Pilot hole preparation before drilling or turning
• Lathe work requiring machining between centres
• Metalworking, fabrication, and general machining setup
• Workshop and maintenance applications