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Greenfield Industries

Greenfield Industries is a leading manufacturer of expendable cutting tools and related products. The company is a part of the Top-Eastern Group (TDC), the world’s largest manufacturer of twist drills.
Greenfield Industries combines a rich history of American manufacturing with global resources, offering a comprehensive portfolio of high-performance carbide drills under renowned brands such as Cleveland, Chicago-Latrobe, and Cle-Line.

This article summarizes the features and applications of Greenfield Industries’ carbide drills.

Greenfield Industries Official Website
Source: Greenfield Industries Official Website
https://www.gfii.com/

Recommended
Applications
for Greenfield Industries

Greenfield Industries' drills are engineered for a wide range of sectors, including aerospace, automotive, heavy machinery, and maintenance, repair, and operations (MRO). They are particularly well-suited for manufacturers who require reliable precision in deep-hole or hard-to-reach drilling applications.

By leveraging advanced geometries and premium substrate materials, Greenfield’s solid carbide and carbide-tipped drills deliver exceptional wear resistance and rigidity.
This ensures consistent hole quality and extended tool life, even when machining difficult-to-cut materials like high-temperature alloys and stainless steels.

Note: Performance may vary depending on the product and machining conditions, including spindle speed, feed rate, coolant, and machine rigidity.

Greenfield Industries Brand Portfolio

Greenfield Industries operates as a house of brands, each with a distinct heritage and specialization. Understanding these sub-brands helps users select the right tool for their specific industry requirements.

Cleveland

Established in 1876, Cleveland is the flagship brand known for premium high-speed steel and cobalt tools.
It is the go-to choice for heavy-duty industrial applications where tool life and consistent performance are critical. While famous for HSS, Cleveland also offers a robust line of carbide-tipped and solid carbide tools for high-production environments.

Chicago-Latrobe

Chicago-Latrobe is widely recognized as the standard for general-purpose industrial drills in the United States.
With a strong focus on the aerospace and heavy equipment sectors, this brand offers an extensive selection of drill styles, including the aircraft extension drills mentioned above. Its products are designed to deliver reliable precision in both handheld and machine operations.

Cle-Line

Cle-Line focuses on the Maintenance, Repair, and Operations (MRO) and construction markets.
These tools are engineered to be forgiving and versatile, making them ideal for portable drilling applications where machine rigidity cannot be guaranteed. They are often sold in comprehensive sets for mechanics and contractors.

Key Products
from Greenfield Industries

IN A/C EXTENSION DRILL

product image
Source: Greenfield Industries Official Website
https://shop.gfii.com/pc_product_detail.asp?key=47C6B7788F7F4BB3972E91C043E5043C

Overview

The Aircraft (A/C) Extension Drill is designed to solve the challenge of drilling in confined spaces or reaching deep cavities where standard drills cannot access.
While available in various substrates, the high-performance versions feature specialized geometries that maintain rigidity and accuracy even at extended lengths.

Commonly featuring a 135° split point, these drills are self-centering, reducing the need for spot drilling and minimizing "walking" on the workpiece surface. They are essential for airframe assembly and maintenance tasks requiring deep reach without compromising hole straightness.

Compatible Materials

  • Carbon and alloy steels
  • Stainless steels
  • Aluminum and non-ferrous metals
  • High-temperature alloys (depending on substrate)

Lineup

  • 6" OAL (152.40mm)
    • Wire gauge sizes: #60 - #1
      • Dia: Ø0.0400" - 0.2280" (Ø1.02mm - 5.79mm)
    • Fractional sizes: 3/64" - 1/2"
      • Dia: Ø0.0469" - 0.5000" (Ø1.19mm - 12.70mm)
    • Letter sizes
      • E: Ø0.2500" (Ø6.35mm)
      • F: Ø0.2570" (Ø6.53mm)

CARB STUB DRILL 118 DEG 4 FACET PT 1767 1/4

product image
Source: Greenfield Industries Official Website
https://shop.gfii.com/pc_product_detail.asp?key=4E8432E7D1B94097ABC95855B90A9B6E

Overview

The Style 1767 Solid Carbide Stub Drill is a premium general-purpose tool designed for maximum rigidity and precision.
Its short flute and overall length significantly reduce tool deflection, making it ideal for high-accuracy drilling in tough materials.

It features a 4-facet point grind with a 118° angle. This geometry improves centering capability and reduces thrust forces during drilling, resulting in a cleaner cut and superior hole finish compared to conventional points. The solid carbide construction allows for higher cutting speeds and feeds.

Compatible Materials

  • Steel and hardened steels
  • Cast iron
  • Titanium and nickel alloys
  • Non-ferrous materials

Lineup

  • 118° Solid Carbide Stub Length Drill
    • Wire gauge sizes: #60, #48, #44, #23, #14
      • Dia: Ø0.0400" - 0.1820" (Ø1.02mm - 4.62mm)
    • Fractional sizes: 1/16" - 1/2"
      • Dia: Ø0.0625" - 0.5000" (Ø1.59mm - 12.70mm)
    • Letter sizes
      • E: Ø0.2500" (Ø6.35mm)
    • Overall Length (OAL): 1.5000" - 3.0000" (38.10mm - 76.20mm)
    • Length of Flute (LOF): 0.3750" - 1.2500" (9.52mm - 31.75mm)

For more detailed technical information and product comparisons, visit our special feature on carbide drills for stainless steel.
The page highlights three top manufacturers with proven strengths in stainless steel machining, including in-depth coverage of recommended tools for this demanding material.

Buying Guide to Greenfield Industries Tools

Greenfield Industries products are sold exclusively through a global network of authorized industrial distributors. They do not typically sell directly to end-users, ensuring that customers receive local support and inventory availability.

To find a supplier, users can utilize the "Distributor Locator" on the official website.
For specific tooling needs or technical consultation, Greenfield Industries also provides a dedicated customer service line to guide users to appropriate vendor for their region.

Made-To-Order Cutting Tools from Greenfield Industries

For applications that require more than standard catalog offerings, Greenfield Industries highlights a Made-To-Order capability designed to support custom or modified tooling requirements. Through its design and modification capabilities, Greenfield Industries can produce tools to customer specifications, helping buyers align tool geometry and performance to specific machining needs and print requirements.

To request Made-To-Order tooling, customers can submit their requirements using the Specials Quote Form. Once the request is received, Greenfield Industries will provide a quotation for the special tooling based on the submitted specifications.

Source: Greenfield Industries Official Website
https://www.gfii.com/

Quality & Certifications

As a supplier to critical industries such as aerospace and energy, Greenfield Industries maintains rigorous quality management systems.The company is ISO 9001:2015 certified, ensuring that every batch of tools meets strict international standards for consistency and performance.

For aerospace applications, their aircraft extension drills undergo specific quality checks to ensure they meet the tight tolerances required for airframe assembly. The use of premium substrates reduces the risk of tool failure in high-stress drilling scenarios.

Source: Greenfield Industries Official Website
https://www.gfii.com/

After-Sales Support from Greenfield Industries

Greenfield Industries is committed to sustainability and cost-efficiency through its GreenTech recycling program.
The company buys back used solid carbide and high-speed steel tools, regardless of the original manufacturer, allowing users to recover value from their worn tools while supporting environmentally responsible manufacturing practices.

Additionally, Greenfield Industries provides comprehensive technical support and application engineering to help customers select the optimal drill for their specific machining needs.

Source: Greenfield Industries Official Website
https://www.gfii.com/

Company Information

Address 2501 Davis Creek Road, Seneca, SC 29678, USA
Contact Number +1 800-348-2885
Customer Service USA: (800) 348-2885 / International: (864) 653-3904
Official Website https://www.gfii.com/