Drill America 9/16 in x 18 in High Speed Steel Extra Long Drill Bit

In this review the Drill America 9/16 in x 18 in High Speed Steel extra long drill bit is evaluated for jobs that need reach into deep or awkward spaces; the bottom line is that it is a straightforward, dependable choice for general purpose drilling in iron and steel-family materials when extra length is required. The reviewer found the bit useful for production and maintenance tasks where a standard length bit would not reach, and its high-speed steel construction and black oxide finish make it a practical option for users who value toughness and improved chip control.

Key Features

• Extra length: The 18 in length provides the reach needed to drill through stacked material or into deep cavities without switching to extensions.
• High-speed steel construction: Balances hardness and toughness so the bit resists wear across a broad range of ferrous materials.
• Black oxide treatment: Adds lubricity and helps retain coolant near the cutting edge for improved performance and longer life in many jobs.
• Round shank: Fits a wide variety of chucks and toolholding systems so it is versatile across drills and holders.
• Spiral flute design: Right-hand cut spirals evacuate chips up and out of the hole to reduce clogging during deep drilling.

Who It's For

The bit is best for mechanics, maintenance techs, fabricators, and hobbyists who frequently work with iron and steel-family materials and need a single reliable extra long option for reach. It suits production environments or one-off repairs where drilling through stacked plates or into deep housings is required.

Those who primarily drill softwoods, plastics, or nonferrous materials with tight tolerance hole locations, or who need coated carbide bits for extreme wear resistance, should look elsewhere; this is a general-purpose HSS tool rather than a specialty coated or carbide option.

Pros & Cons

Pros

• Good reach for deep or awkward holes without having to add extensions.
• Durable high-speed steel offers a balance of hardness and toughness for general metalworking use.
• Black oxide finish improves lubricity and chip flow near the cutting edge.
• Round shank fits many chucks for broad compatibility.

Cons

• Some users report mixed durability under heavy side loads, so it is not immune to breakage if misused or overloaded.
• Uncoated HSS is not as wear-resistant as specialized coated or carbide bits for extreme production wear.

Specifications

Our Verdict

The Drill America 9/16 in x 18 in HSS extra long bit is a practical value for those who need reach and a dependable general-purpose metalworking drill. It combines extra length with rugged HSS construction and a black oxide finish to perform well in many iron and steel applications; buyers who avoid heavy misuse will find it a good investment for maintenance and production tasks.

Frequently Asked Questions

Can this bit be used in standard drill chucks?
Yes, the round shank is compatible with a wide variety of drill chucks and toolholding systems suitable for extra long bits.

What materials is this bit intended for?
It is designed for general purpose drilling in a broad range of materials in the iron and steel families.

Does the black oxide mean the bit is coated for long life?
Black oxide adds lubricity and helps retain coolant, improving chip control and life, but it is not a hard wear coating like TiN; it is still an uncoated HSS substrate with surface treatment.