HSS flat countersink with guide pin DIN 373 dia. 11.0 mm shank dia. 8 mm for tapping hole

Technical information

Dia. ball bearing

5 mm

Dia. shank

8 mm

Diameter

11 mm

Length, total

80 mm

RPM, grey cast iron, white cast iron

280 - 280 RPM

RPM, hard non-ferrous metals

420 - 560 RPM

RPM, rust and acid-resistant steels

280 - 420 RPM

RPM, soft non-ferrous metals

420 - 560 RPM

RPM, steels over 700 N/mm²

280 - 420 RPM

RPM, steels up to 700 N/mm²

280 - 560 RPM

RPM, thermoplastics, fibre-reinforced plastics (GRP/CRP)

280 - 420 RPM

Version

GKL

Packaging unit

1 piece

Description

• High-performance flat countersinks made from HSS according to DIN 373 for countersinking cylinder head and hexagon screws as well as nuts. Flat countersinks have a cylindrical design. The cylindrical pin in the relevant quality grades of fine, medium or tapping hole ensures coaxial alignment of the countersink to the bore.
• High performance countersink tools with guide pins for the tapping hole (GKL).

Special features

• Very high stock removal rate.
• Optimum chip removal.
• Burr-free results.
• Long tool life.
• Smooth operation.
• Good surface quality.

Recommendations for use

• Please observe the recommended rotational speeds.
• Flat countersinks for the tapping hole are suitable for producing flat countersinks at core holes for female threads.

Product identifiers

Product number

25203117

Family SKU

178885

EAN

4007220169216