A professionally reconditioned National 3" HSS Morse Taper drill — reground on an Oliver 600 Drill Grinder and recoated with hot black oxide to MIL-DTL-13924D. Sharp and ready to run.

Reconditioning sequence:

• Inspected for physical damage and shank integrity
• Morse Taper shank verified and trued with certified taper gauges
• Hot black oxide applied by ECO Finishing (Fridley, MN) — MIL-DTL-13924D certified process; Metal Guard 510 rust preventative applied by ECO post-coating
• Reground on Oliver 600 Drill Grinder — cutting geometry fully restored
• Sprayon LU767 applied immediately to protect fresh cutting edges
• Packed in new telescopic polypropylene tube with foam insert, then packed in new corrugated shipping box

Technical Specs

Diameter (Nominal)	3"
Diameter (Measured)	2.972"
Shank Type	Morse Taper #4 (MT4)
Overall Length (OAL)	16-7/8"
Flute Length	7-3/4"
Flutes	2
Point Angle	118°
Material	High-Speed Steel (HSS)
Coating	Hot Black Oxide — MIL-DTL-13924D
Reconditioning	Oliver 600 Drill Grinder — Waterloo, IA
Manufacturer	National, Rochester, MI (USA)

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