20.5mm HSS 90° Straight Shank CountersinkPrecision Cutting for Versatile Materials The 20. 5mm Hi Speed Steel (HSS E) 90 Straight Shank Countersink is a high quality tool, ideal for a wide range of materials, including steel and aluminium. A countersink creates a conical impression on the surface of the material, allowing for the proper seating of countersunk bolts or fasteners. The main purpose of using countersunk bolts or fasteners is to create a flat surface where nothing can catch on

✔ Solid Carbide Construction – Offers exceptional durability and wear resistance for reliable

and improved productivity in demanding drilling environments

3/8"-16X1D UNC Thread Inserts with a 1D diameter multiplier (1x diameter) for strong and reliable thread reinforcement

excellent thermal control

Featuring a Cylinder - Non End Cutting design

making it ideal for various applications where durability and performance are key

Thread Standard

🔹 Shape: Cylinder - Ball Nose – Perfect for smooth

Pitch: 14-10 TPI55° thread angle

Thread Type: External and Internal Threading

perfect for high-efficiency tasks

Automotive: Ideal for repairing damaged threads in engine components