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100° x 3/4" Diameter Countersink. 1 Flute, Carbide, Uncoated. 3/8" Shank, 2.750" OAL. KEO® Made in USA (Arch Cutting Tools) Part #919-000-981

100° x 3/4" Diameter Countersink. 1 Flute, Carbide, Uncoated. 3/8" Shank, 2.750" OAL. KEO® Made in USA (Arch Cutting Tools) Part #919-000-981
ARCH CUTTING TOOLS
919000981
919-000-981
KEO-103-055736
919-000-981
103-055736
Weight: 0.15 LBS
Brand: ARCH CUTTING TOOLS
$184.88
(21% off)
$146.06
each
7/31/2026
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Product Description

Keo® Solid Carbide Single Flute Countersinks Are Designed For Deburring, Chamfering, And Countersinking Holes In A Wide Variety Of Materials, Including Hardened Steels, Titanium Alloys, Stainless Steel, And Non-Ferrous Metals. The Single-Flute Geometry Provides A Perfectly Concentric Cutting Edge That Minimizes Chatter And Ensures A Smooth Surface Finish, While The Solid Carbide Substrate Offers Exceptional Rigidity, Wear Resistance, And Edge Retention. These Tools Are Part Of Keo’S Precision-Ground Line, Suitable For High-Speed Cnc Machining As Well As Manual Applications Where Finish Quality Is Critical.

  • Made from premium solid micrograin carbide for maximum hardness and wear resistance.
  • Single-flute design provides smooth cutting action and minimizes chatter.
  • Delivers precise, concentric chamfers with excellent surface finish.
  • Ideal for high-speed countersinking, deburring, and chamfering operations.
  • Excels in hard and abrasive materials such as stainless steel, titanium, cast iron, and composites.
  • Precision-ground cutting edges ensure accuracy and consistent performance.
  • Withstands high cutting temperatures for extended tool life in demanding applications.
  • Suitable for CNC machines, drill presses, and production environments.Produces clean, chatter-free finishes even in tough materials.
  • Made in the USA for guaranteed quality and precision
  • This photo of this item only REPRESENTS this tool, please read the items specifics for detailed information.

This item is part of our complete offering of ARCH Cutting Tools, trusted for high-performance CNC machining across drilling, milling, holemaking, and indexable applications. Explore Patriot HP Cutting Tools for advanced solid carbide and high-performance machining solutions, KEO Cutting Tools for precision countersinks, center drills, and holemaking tools, Ultra-Dex Cutting Tools for productive indexable milling, drilling, and insert-based machining, and Revere Cutting Tools for high-performance carbide end mills and milling solutions. Visit our main ARCH Cutting Tools page to compare tool styles, coatings, geometries, and performance options to find the right solution for your application.

Made in U.S.A.
Shipping & Delivery Options
FLUSHING, MICHIGAN, USA
  • UPS

Suncoast Shipping Deals

Min. order amount Shipping Option Special Rate Max Weight
$100.00 UPS Blue 2 Business Days $19.99 4 LBS
Note: Special vendor shipping deals are destination-based and may not be available in all ZIP codes. If this rate is not available for your shipping address, standard shipping options will be shown at checkout.
$50.00 MINIMUM ORDER
If ordered by 2:30pm Eastern Standard Time Arch will ship same Business Day.
Factory Stock
19
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Additional Product Details

Technical Details

Manufacturer
ARCH CUTTING TOOLS
Manufacturer Part Number
919-000-981
Cutter Diameter
0.7500" (3/4")
Overall Length
2.750"
Shank Diameter
0.3750" 3/8"
Number Of Flutes
1
Tool Coating
Bright Uncoated
Tool Substrate Material
Carbide
Hand Cutting Direction
Right Hand
Included Angle
100°
Country of Origin
U.S.A.
Series
919
Single Or Double End
Single End
Brand
KEO®
Type
Countersink
Shank Length
1.5000"

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