Dormer High Speed Steel Straight Flute Square Hand Reamer 12 mm Diameter, 18 mm Shank Diameter, 255 mm Length B90312.0

Dormer B90312.0 is a high-speed steel (HSS) straight flute square hand reamer designed for precision machining tasks requiring enlargement and finishing of holes. With a 12 mm diameter cutting section and a robust 18 mm square shank, this tool extends to 255 mm overall length, making it suitable for deep hole reaming.

This hand reamer is manufactured in accordance with ISO, BS, and DIN standards (ISO 3465, BS 328, DIN 9 A) ensuring consistent accuracy and interchangeability in professional workshop environments. The straight flute design enhances chip removal and delivers smooth finishes on most ferrous and non-ferrous metals.

The square shank allows excellent grip and torque transmission for manual use or in tool holders designed to accept square shanks. As a premium Dormer product, it is reliably used in metalworking, automotive repair, tool making, and industrial manufacturing processes where tolerance and surface finish are critical.

Made from durable High Speed Steel for long tool life. Features straight flute type for precise reaming operations. Square shank design allows secure holding during manual use. Overall length of 255 mm with a 12 mm cutting diameter.

Shank diameter measures 18 mm for compatibility with standard tool holders. Manufactured to standards BS 328, DIN 9 A, and ISO 3465 ensuring quality and precision. Ideal for mechanical, manufacturing, and machining workshop applications.

Applicable on a range of ferrous and non-ferrous metal materials.

This hand reamer is essential for industrial tool kits and metal fabrication shops aiming for streamlined hole finishing operations. Browse the Dormer tool range for complementary reaming and machining products at EnvMart.

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