Dormer Pramet A125 9/64 Inch x 200 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328

When deep-hole machining demands precision, consistency, and reach, the Dormer Pramet A125 9/64 Inch x 200 mm HSS ST Straight Shank Extra Long Series Drill BS 328 is built to perform. This dedicated long-reach drill is engineered to deliver clean starts, steady cutting, and reliable hole quality in a range of metals, making it a trusted choice for pro shops and busy workshops alike.

118° conventional point for reliable starts

The 118-degree point creates a strong, self-centering tip that minimizes wandering and reduces chatter as you begin a hole. Its geometry is designed for easier re-grinding in-house, helping you extend tool life without sacrificing hole accuracy.

Steam oxide finish for smoother starts and less sticking

The steam oxide coating lowers friction between the cutting edge and the workpiece, helping to prevent built-up edge and sticking. This translates to more predictable feeds, steadier hole diameters, and less workpiece marring when drilling steel, aluminum, or stainless steel.

Extra-long length for deep holes and hard-to-reach areas

With a generous 200 mm length, this drill reaches deep into thick sections or recessed features where standard drills fall short. It reduces the need to reposition tooling or swap to multiple tools, keeping your workflow efficient on demanding projects.

Premium HSS for versatile metalworking

Crafted from high-speed steel, the A125 drill is capable of handling a broad spectrum of materials—from carbon steel to stainless steel and aluminum. The balance of hardness and toughness ensures consistent performance across different metals and thicknesses, making it a versatile addition to any tooling arsenal.

Straight shank for universal machine compatibility

The straight shank design pairs with a wide range of drill chucks and holders across manual drills and CNC machines. This ensures secure grip and smooth transmission of cutting force, especially important for long-reach drilling tasks where stability matters most.

Specifications at a glance

• Diameter: 9/64 in (3.57 mm)
• Length: 200 mm
• Shank: Straight
• Material: High-speed steel (HSS)
• Point angle: 118° conventional
• Finish: Steam oxide
• Standard: BS 328

Ideal for professional machinists, maintenance technicians, and fabricators tackling deep-hole work in steel, aluminum, and stainless steel, the Dormer Pramet A125 drill delivers extended reach without compromising hole quality. For projects that demand accuracy, durability, and long tool life in a single, reliable instrument, this extra-long HSS drill is a strategic choice that keeps your workflow efficient and your results precise.

Tip for best results: keep the cutting edge sharp with periodic re-grinding, use appropriate cutting fluid to manage heat, and employ a gentle pecking technique when drilling deep holes to maintain chip evacuation and hole integrity.