Eagle Taptek S400-016-1 – 1/4" HSS Black Oxide Stub Length (Screw Machine) Drill Bits – Full Factory 12-Pack – Brand New


You are buying a complete factory-sealed pack of 12 genuine Eagle Taptek S400 Series high-speed steel stub-length twist drill bits. These are part of Eagle Cutting Tools’ respected industrial import lineup — built for high-rigidity, heavy-duty applications where standard jobber bits flex or break.


Key Features & Benefits:


135° Split Point – Self-centering, quick penetration, minimal walking — perfect for drill presses, CNC, and handheld use on tough materials.


Black Oxide Finish – Excellent lubricity, superior chip evacuation, corrosion resistance, and reduced friction/heat.

Stub / Screw Machine Length – Short overall length (2-1/2") and flute (1-3/8") provide maximum rigidity and breakage resistance — ideal for production, spot drilling, and tight spaces.

Precision HSS Construction – Heat-resistant high-speed steel for extended life in ferrous/non-ferrous metals.

Ground for Accuracy – Consistent diameters, flutes, and points deliver clean, repeatable holes.

Exact Specifications (from manufacturer catalog):

Diameter: 1/4" (.2500")

Flute Length: 1-3/8"

Overall Length: 2-1/2"

Shank: Straight round


Best For: Steel, stainless, cast iron, aluminum, alloys, and general fabrication. Excellent choice for machinists, auto shops, maintenance, and serious DIYers.


Condition: Brand New – Never used or mounted. Bits remain factory sharp and pristine in the original clear plastic packaging (see photos). Minor cosmetic wear on packaging from storage only.


Why These Bits? Professional-grade performance and value from a trusted cutting-tool manufacturer. The S400 series delivers reliable results at an outstanding price point versus USA-made premiums.