Error!

HSSCo8 Countersinks 90° Cylindrical Shank | Rinaldi-Tools
HSSCo8 Countersinks 90° Cylindrical Shank | Rinaldi-Tools
    HSSCo8 Countersinks 90° Cylindrical Shank | Rinaldi-Tools
    HSSCo8 Countersinks 90° Cylindrical Shank | Rinaldi-Tools

HSSCo8 Countersinks 90°

€10.70
Tax excluded
Diameter
Quantity

Technical data

Mill Type HSSCo8 Countersinks 90°
Point Angle 90°
Workpiece Material Steel, Stainless Steel, Cast Iron, NF-Materials
Processing Countersinking and chamfers
Shank Cylindrical Shank
Flutes 3
Grade HSSCo8
Packaging unit 1 Pc.

Dimensions

a D d L Diameter Range Z
KS-90-Z3-D4.3-HSSCo8 90° 4,3 4 40 1,3 - 4,3 3
KS-90-Z3-D5.0-HSSCo8 90° 5 4 40 1,5 - 5,0 3
KS-90-Z3-D6.0-HSSCo8 90° 6 5 45 1,5 - 6,0 3
KS-90-Z3-D6.3-HSSCo8 90° 6,3 5 45 1,5 - 6,3 3
KS-90-Z3-D7.0-HSSCo8 90° 7 6 50 1,8 - 7,0 3
KS-90-Z3-D8.0-HSSCo8 90° 8 6 50 2,0 - 8,0 3
KS-90-Z3-D8.3-HSSCo8 90° 8,3 6 50 2,0 - 8,3 3
KS-90-Z3-D10.0-HSSCo8 90° 10 6 50 2,5 - 10,0 3
KS-90-Z3-D10.4-HSSCo8 90° 10,4 6 50 2,5 - 10,4 3
KS-90-Z3-D11.5-HSSCo8 90° 11,5 8 56 2,8 - 11,5 3
KS-90-Z3-D12.4-HSSCo8 90° 12,4 8 56 2,8 - 12,4 3
KS-90-Z3-D15.0-HSSCo8 90° 15 10 60 3,2 - 15,0 3
KS-90-Z3-D16.5-HSSCo8 90° 16,5 10 60 3,2 - 16,5 3
KS-90-Z3-D19.0-HSSCo8 90° 19 10 63 3,5 - 19,0 3
KS-90-Z3-D20.5-HSSCo8 90° 20,5 10 63 3,5 - 20,5 3
KS-90-Z3-D23.0-HSSCo8 90° 23 10 67 3,8 - 23,0 3
KS-90-Z3-D25.0-HSSCo8 90° 25 10 67 3,8 - 25,0 3
KS-90-Z3-D30.0-HSSCo8 90° 30 12 71 4,2 - 30,0 3
KS-90-Z3-D31.0-HSSCo8 90° 31 12 71 4,2 - 31,0 3

High-performance HSSCo8 countersink for burr-free deburring

The HSSCo8 Countersinks 90° are essential cutting tools for professional countersinking and deburring tasks across a wide range of materials. Featuring three precision-ground flutes and a 90° point angle, these tools provide clean, burr-free finishes in steel, stainless steel, cast iron, and non-ferrous materials. The 8% cobalt alloy (HSSCo8) increases heat resistance, securing high wear resistance even in demanding machining environments. Equipped with a straight cylindrical shank, the countersink can be clamped securely into standard holders, promoting smooth rotation and optimal torque transfer. This reliable tool supports efficient workflows in both industrial manufacturing and workshop settings.

Advantages of HSSCo8 Countersinks 90°

  • Three precision flutes ensure smooth, chatter-free countersinking
  • Cobalt substrate (HSSCo8) offers enhanced heat resistance and tool life
  • Suitable for versatile machining from structural steel to stainless steel
  • 90° point angle is perfectly aligned for standard countersunk screws
  • Cylindrical shank allows for secure, centered clamping

Professional HSSCo8 countersink for precise deburring and chamfering

The HSSCo8 Countersinks 90° are specifically engineered for chatter-free, clean countersinking and deburring in metalworking applications. Featuring three flutes and a 90° point angle, these tools reliably prepare holes for countersunk screws and smoothly chamfer drill edges. The cutting material HSSCo8 (cobalt-alloyed high-speed steel) is characterized by a significantly higher heat resistance and wear resistance than standard HSS. This makes the tool highly capable not only for standard structural steels but also for the demanding machining of stainless steels, cast iron, and various non-ferrous metals. The cylindrical shank design establishes a secure grip in the tool holder, minimizing vibrations and improving the workpiece's surface finish.

Suitable materials

Technical data

  • Mill Type: HSSCo8 Countersinks 90°
  • Point Angle: 90°
  • Grade: HSSCo8
  • Shank: Cylindrical Shank
  • Flutes: 3
Mill Type HSSCo8 Countersinks 90°
Point Angle 90°
Workpiece Material Steel, Stainless Steel, Cast Iron, NF-Materials
Processing Countersinking and chamfers
Shank Cylindrical Shank
Flutes 3
Grade HSSCo8
Packaging unit 1 Pc.

Dimensions of HSSCo8 Countersinks 90°

Item-Nr.
 a D d L Diameter Range Z
KS-90-Z3-D4.3-HSSCo8 2351041 90° 4,3 4 40 1,3 - 4,3 3
KS-90-Z3-D5.0-HSSCo8 2351042 90° 5 4 40 1,5 - 5,0 3
KS-90-Z3-D6.0-HSSCo8 2351043 90° 6 5 45 1,5 - 6,0 3
KS-90-Z3-D6.3-HSSCo8 2351044 90° 6,3 5 45 1,5 - 6,3 3
KS-90-Z3-D7.0-HSSCo8 2351045 90° 7 6 50 1,8 - 7,0 3
KS-90-Z3-D8.0-HSSCo8 2351046 90° 8 6 50 2,0 - 8,0 3
KS-90-Z3-D8.3-HSSCo8 2351047 90° 8,3 6 50 2,0 - 8,3 3
KS-90-Z3-D10.0-HSSCo8 2351048 90° 10 6 50 2,5 - 10,0 3
KS-90-Z3-D10.4-HSSCo8 2351049 90° 10,4 6 50 2,5 - 10,4 3
KS-90-Z3-D11.5-HSSCo8 2351050 90° 11,5 8 56 2,8 - 11,5 3
KS-90-Z3-D12.4-HSSCo8 2351051 90° 12,4 8 56 2,8 - 12,4 3
KS-90-Z3-D15.0-HSSCo8 2351052 90° 15 10 60 3,2 - 15,0 3
KS-90-Z3-D16.5-HSSCo8 2351053 90° 16,5 10 60 3,2 - 16,5 3
KS-90-Z3-D19.0-HSSCo8 2351054 90° 19 10 63 3,5 - 19,0 3
KS-90-Z3-D20.5-HSSCo8 2351055 90° 20,5 10 63 3,5 - 20,5 3
KS-90-Z3-D23.0-HSSCo8 2351056 90° 23 10 67 3,8 - 23,0 3
KS-90-Z3-D25.0-HSSCo8 2351057 90° 25 10 67 3,8 - 25,0 3
KS-90-Z3-D30.0-HSSCo8 2351058 90° 30 12 71 4,2 - 30,0 3
KS-90-Z3-D31.0-HSSCo8 2351059 90° 31 12 71 4,2 - 31,0

Cutting data

Workpiece Material Tensile strength Cutting Speed Feed (mm/U)
(N/mm²) Vc (m/min) Ø 4,3-6,3 Ø 7-10,4 Ø 11,5-15 Ø 16-20 Ø 20,5-25 Ø 30-31
Structural Steel <450 20 0,12-0,16 0,16-0,2 0,2-0,23 0,23-0,26 0,26-0,29 0,29-0,33
Tempered Steel 450-700 13 0,10-0,14 0,14-0,18 0,18-0,21 0,21-0,24 0,24-0,27 0,27-0,31
Tooling Steel/Tempered Steel >700 10 0,06-0,1 0,1-0,14 0,14-0,17 0,17-0,21 0,21-0,24 0,24-0,27
Stainless Steel <1100 4-6 0,06-0,08 0,06-0,08 0,08-0,1 0,08-0,1 0,1-0,12 0,1-0,12
Cast Iron 15-22 0,09-0,11 0,1-0,12 0,13-0,16 0,16-0,19 0,19-0,22 0,22-0,25
Aluminum/Aluminum-alloys (<12% Si.) 35-42 0,15-0,18 0,18-0,21 0,21-0,24 0,24-0,27 0,27-0,31 0,31-0,35
Copper/Brass 15-28 0,12-0,15 0,15-0,18 0,18-0,21 0,21-0,24 0,24-0,28 0,28-0,32

Applications

This countersink is a practical choice for metal processing in industrial manufacturing, fixture construction, and professional workshops. With its 90° angle, it is traditionally used for standard-compliant recessing of screw heads and for the clean chamfering of bore edges. It provides flexible application possibilities on conventional drill presses, lathes, milling machines, and CNC-controlled systems, provided that speed and feed rates are matched to the workpiece material.

Special features

The straight cylindrical shank supports stable torque transmission and prevents unwanted chatter marks on the countersunk surface by ensuring good concentricity. The addition of 8 percent cobalt maintains the tool's toughness even at elevated machining temperatures. This material property creates an excellent foundation for longer service life between tool changes, particularly when cutting high-strength or abrasive materials.

Rinaldi-Tools GmbH
2351041

Data sheet

Materials
Cast Iron
NF-Metals
Plastic
Stainless Steel
Steel

6 other products in the same category:

Reverse Countersink – CCMT 06/09 | Rinaldi-Tools
Rinaldi-Tools GmbH

Reverse Countersink - CCMT 06/09

Price ab €94.00
Availability: 1000000 In Stock

Technical data

Mill Type Reverse Countersink
Insert CCMT
Packaging Unit 1 Stück

Dimensions

D Dmin L L1 L2 L3 d g
RS-D18-K40 CCMT 06 18 10 110 60 47 40 20 4,05
RS-D20-K45 CCMT 06 20 12 117 67 52 45 20 3,8
RS-D26-K60 CCMT 06 26 17 132 82 67 60 20 5,05
RS-D33-K75 CCMT 09 33 21 152 102 82 75 20 6,65

Efficient solution for precise back spotfacing

The reverse countersink for CCMT 06 and 09 inserts is a reliable tool for the economic machining of hard-to-reach reverse bores. Its robust design, combined with proven standard indexable inserts, enables consistent results when producing countersinks and flat surfaces without the need for time-consuming workpiece repositioning.

Advantages of Reverse Countersink - CCMT 06/09

  • Saves time by eliminating additional setups
  • Compatible with standardized CCMT 06 and 09 indexable inserts
  • Stable cylindrical shank with 20 mm diameter for low-vibration machining
  • Four stepped versions cover diameters from 18 to 33 mm
HSS-E Flat Countersink for Tapping Core Holes | Rinaldi-Tools
Rinaldi-Tools GmbH

HSS-E Countersink for 180° Capscrew - For Tapping Core Holes

Price ab €15.90
Availability: 1000000 In Stock

Technical data

Drill Type Flat Countersink
Point Angle 180°
Workpiece Material Steel, NF-Materials
Shank Cylindrical Shank
Flutes 3
Grade HSS-E
Packaging unit 1 Pc.

Dimensions

D D1 Screw Size d L Z
FS-G-180-Z3-D6.0-M3-HSS-E 6 2,5 M3 5 71 3
FS-G-180-Z3-D6.5-M3.5-HSS-E 6,5 2,9 M3,5 5 71 3
FS-G-180-Z3-D8.0-M4-HSS-E
 8 3,3 M4 5 71 3
FS-G-180-Z3-D10.0-M5-HSS-E
 10 4,2 M5 8 80 3
FS-G-180-Z3-D11.0-M6-HSS-E
 11 5,0 M6 8 80 3
FS-G-180-Z3-D15.0-M8-HSS-E
 15 6,8 M8 12,5 100 3
FS-G-180-Z3-D18.0-M10-HSS-E
 18 8,5 M10 12,5 100 3
FS-G-180-Z3-D20.0-M12-HSS-E
 20 10,2 M12 12,5 100 3

HSS-E Countersink for Tapping Core Holes

The HSS-E flat countersinks with a 180° point angle and fixed pilot are specifically designed for preparing socket head cap screws and cheese-head screws. The pilot diameter is precisely matched to tapping core holes (M3 to M12), enabling accurate and chatter-free countersinking across various workpiece materials.

Advantages of the HSS-E Countersinks

  • Exact centering via fixed pilot designed for tapping core holes
  • 180° flat point angle for perfectly flush socket head cap screws
  • Durable HSS-E grade for good tool life in steel, stainless steel, and non-ferrous metals
  • Smooth machining ensured by the 3-flute geometry (Z3)
  • Practical compatibility thanks to a standard cylindrical shank
HSSCo8 Countersinks 120° online shop | Rinaldi-Tools
Rinaldi-Tools GmbH

HSSCo8 Countersinks 120°

Price ab €19.30
Availability: 1932735274 In Stock

Technical data

Mill Type HSSCo8 Countersinks 120°
Point Angle 120°
Workpiece Material Steel, Stainless Steel, Cast Iron, NF-Materials
Processing Countersinking and chamfers
Shank Cylindrical Shank
Flutes 3
Grade HSSCo8
Packaging unit 1 Pc.

Dimensions

a D d L Diameter Range Z
KS-120-Z3-D8.0-HSSCo8 120° 8 6 49 2,0 - 8,0 3
KS-120-Z3-D12.5-HSSCo8 120° 12,5 8 54 2,8 - 12,5 3
KS-120-Z3-D16.0-HSSCo8 120° 16 10 57 3,2 - 16,0 3
KS-120-Z3-D20.0-HSSCo8 120° 20 10 59 3,5 - 20,0 3
KS-120-Z3-D25.0-HSSCo8 120° 25 10 65 3,8 - 25,0 3

HSSCo8 Countersinks 120° for professional chamfering

The HSSCo8 countersink 120° is a high-precision cutting tool designed for countersinking and deburring holes in various materials. Equipped with a cylindrical shank and three flutes, this countersink offers high wear resistance and safe chip evacuation. It is ideally suited for industrial and professional manufacturing applications.

Advantages of HSSCo8 Countersinks 120°

  • Clean and chatter-free deburring due to proven 3-flute geometry
  • Long tool life and high hot hardness thanks to premium HSSCo8 material
  • Wide range of applications in steel, stainless steel, cast iron, and non-ferrous metals
  • Optimal tool holding and power transmission via standardized cylindrical shank
  • Controlled entry geometry thanks to a precise 120° point angle
HSS-E Countersink for 180° Capscrew - Medium | Rinaldi-Tools
Rinaldi-Tools GmbH

HSS-E Countersink for 180° Capscrew - Medium

Price ab €15.90
Availability: 1000000 In Stock

Technical data

Drill Type Flat Countersink
Point Angle 180°
Workpiece Material Steel, NF-Materials
Shank Cylindrical Shank
Flutes 3
Grade HSS-E
Packaging unit 1 Pc.

Dimensions

D D1 Screw Size d L Z
FS-M-180-Z3-D6.0-M3-HSS-E 6 3,4 M3 5 71 3
FS-M-180-Z3-D6.5-M3.5-HSS-E 6,5 3,9 M3,5 5 71 3
FS-M-180-Z3-D8.0-M4-HSS-E 8 4,5 M4 5 71 3
FS-M-180-Z3-D10.0-M5-HSS-E 10 5,5 M5 8 80 3
FS-M-180-Z3-D11.0-M6-HSS-E 11 6,6 M6 8 80 3
FS-M-180-Z3-D15.0-M8-HSS-E 15 9,0 M8 12,5 100 3
FS-M-180-Z3-D18.0-M10-HSS-E 18 11,0 M10 12,5 100 3
FS-M-180-Z3-D20.0-M12-HSS-E 20 14,0 M12 12,5 100 3

Reliable Counterboring for Capscrews

The HSS-E Countersink for 180° Capscrew in the "Medium" fit is a highly capable cutting tool designed for professional metalworking operations. It is specifically engineered to produce flat-bottomed counterbores with a 180° point angle. This setup creates ideal conditions for recessing socket head cap screws and socket head set screws flush within the workpiece. The integrated pilot securely guides the tool inside the pre-drilled through hole, effectively preventing deflection and supporting a stable machining process.

Advantages of HSS-E Countersink for 180° Capscrew - Medium

  • Three efficient flutes support a uniform cutting action and clean surfaces
  • Integrated pilot facilitates exact coaxial alignment in the existing drilled hole
  • Manufactured from robust HSS-E, offering favorable properties for machining steel and NF materials
  • Universal cylindrical shank enables uncomplicated clamping in common tool holders
  • Designed for medium clearance through holes to support practical screw fits
  • Delivered in a secure packaging unit (1 pc.)
HSSCo8 Countersinks 60° – 3 Flutes Deburring | Rinaldi-Tools
Rinaldi-Tools GmbH

HSSCo8 Countersinks 60°

Price ab €11.90
Availability: 1932735275 In Stock

Technical data

Mill Type HSSCo8 Countersinks 60°
Point Angle 60°
Workpiece Material Steel, Stainless Steel, Cast Iron, NF-Materials
Processing Countersinking and chamfers
Shank Cylindrical Shank
Flutes 3
Grade HSSCo8
Packaging unit 1 Pc.

Dimensions

a D d L Diameter Range Z
KS-60-Z3-D6.3-HSSCo8 60° 6,3 5 45 1,6 - 6,3 3
KS-60-Z3-D8.0-HSSCo8 60° 8 6 50 2,0 - 8,0 3
KS-60-Z3-D10.0-HSSCo8 60° 10 6 50 2,5 - 10,0 3
KS-60-Z3-D12.5-HSSCo8 60° 12,5 8 56 3,2 - 12,5 3
KS-60-Z3-D16.0-HSSCo8 60° 16 10 63 4,0 - 16,0 3
KS-60-Z3-D20.0-HSSCo8 60° 20 10 67 5,0 - 20,0 3
KS-60-Z3-D25.0-HSSCo8 60° 25 10 71 6,3 - 25,0 3

Precision HSSCo8 Countersinks 60° for flawless deburring

The HSSCo8 countersink with a 60° point angle is designed for professional countersinking and deburring tasks. Manufactured from high-speed steel with 8% cobalt (HSSCo8), it offers excellent wear resistance and hot hardness. Equipped with three cutting edges, this tool supports smooth, chatter-free machining and delivers clean surface finishes across various materials.

Advantages of HSSCo8 Countersinks 60°

  • Three flutes ensure smooth, chatter-free deburring
  • High wear resistance and temperature stability due to HSSCo8
  • Suitable for steel, stainless steel, cast iron, and non-ferrous metals
  • Cylindrical shank for secure mounting in standard tool holders
HSS-E Countersink for 180° Capscrew - Fine | Rinaldi-Tools
Rinaldi-Tools GmbH

HSS-E Countersink for 180° Capscrew - Fine

Price ab €15.90
Availability: 999987 In Stock

Technical data

Drill Type Flat Countersink
Point Angle 180°
Workpiece Material Steel, NF-Materials
Shank Cylindrical Shank
Flutes 3
Grade HSS-E
Packaging unit 1 Pc.

Dimensions

D D1 Screw Size d L Z
FS-F-180-Z3-D6.0-M3-HSS-E 6 3,2 M3 5 71 3
FS-F-180-Z3-D6.5-M3.5-HSS-E 6,5 3,7 M3,5 5 71 3
FS-F-180-Z3-D8.0-M4-HSS-E 8 4,3 M4 5 71 3
FS-F-180-Z3-D10.0-M5-HSS-E 10 5,3 M5 8 80 3
FS-F-180-Z3-D11.0-M6-HSS-E 11 6,4 M6 8 80 3
FS-F-180-Z3-D15.0-M8-HSS-E 15 8,4 M8 12,5 100 3
FS-F-180-Z3-D18.0-M10-HSS-E 18 10,5 M10 12,5 100 3
FS-F-180-Z3-D20.0-M12-HSS-E 20 13,0 M12 12,5 100 3

Precise countersinking for socket head cap screws

This HSS-E flat countersink with a fixed guide pin (fine grade) is designed for professional 180° countersinking operations. It supports the flush and aligned seating of socket head cap screws and socket head set screws. Manufactured from cobalt-alloyed high-speed steel (HSS-E), the tool offers excellent thermal resistance, making it suitable for machining steel, stainless steel, and non-ferrous metals. The precision pilot ensures reliable coaxial alignment with the pre-drilled hole during the entire operation.

Advantages of the HSS-E Countersink for 180° Capscrew - Fine

  • Reliable centering via a fixed pilot pin for well-aligned flat counterbores
  • Supports extended tool usage and thermal stability provided by the HSS-E grade
  • "Fine" clearance grade ensures a highly accurate fit for the screw head
  • Three-flute design promotes smooth, low-vibration cutting performance
  • Versatile application across steel, stainless steel, and aluminum workpieces