Drill America 1-1/8ft-7 Carbon Steel Tap Set (Set of 3) - Re-threading

In this review of the Drill America 1-1/8'-7 Carbon Steel Tap Set (DWT Series) the bottom line is clear: this is a simple, economical set for re-threading and light threading tasks, especially on mild steel and aluminum. The set contains a taper, plug and bottoming tap so it covers the usual hand-tapping sequence and is aimed at machinists, hobbyists, and maintenance techs who need a quick repair or general-purpose tap kit. It is not a premium coated or high-speed tool, but it does a solid job where sharpness and cost-effective versatility matter.

Key Features

• Set composition: Includes one taper, one plug and one bottoming tap, providing the full sequence needed to re-thread through or blind holes.
• Carbon steel construction: The carbon steel material is suitable for re-threading damaged threads and for threading mild steels and aluminum when used with proper technique.
• Straight flute design: Straight flutes allow chips to collect in the flutes as they cut, which is well suited to most hand-tapping or shallow cut applications.
• Uncoated finish: Uncoated tools are just the base substrate without extra treatments, making them a practical, lower-cost choice for general use and rework.
• Taper, plug, bottom styles: The three tap styles address starting, through-hole and bottoming applications so users can generate a full thread in a variety of hole types.

Who It's For

This tap set is best for home shop machinists, maintenance personnel, and hobbyists who need an affordable, straightforward solution for re-threading damaged or jammed threads and for occasional threading of mild steels or aluminum. It is handy as a repair kit kept in a toolbox or mounted on a workbench for ad hoc jobs.

Those who should look elsewhere include professionals who require long tool life on tough alloys, high-volume production shops, or users who need specialized coatings for wear resistance and reduced breakage risk in harder materials. For heavy production or hardened steels, a coated high-speed steel or carbide option would be more appropriate.

Pros & Cons

Pros

• Well matched tap sequence (taper, plug, bottom) covers most re-threading needs.
• Sharp cutting edges and straight flutes make it effective for aluminum and mild steel work when used correctly.
• Uncoated carbon steel construction keeps cost low and provides acceptable performance for general tasks.

Cons

• Carbon steel and uncoated finish mean reduced durability versus coated or higher grade tooling, so breakage is possible under heavy use.
• Mixed customer reports on quality consistency suggest careful handling and conservative tapping practices are advisable.

Specifications

Our Verdict

The Drill America DWT 1-1/8'-7 carbon steel tap set is a practical, budget-friendly kit for re-threading and general-purpose hand tapping of mild steels and aluminum. It offers the full tap sequence and sharp cutting geometry for most repair and light workshop tasks, but users should expect shorter life than coated or premium taps and take care to avoid overloading the tools.

Frequently Asked Questions

Can these taps be used on aluminum?
Yes. Customers report they work well on aluminum when used with proper lubrication and controlled cutting.

Do these taps come coated?
No. These are uncoated carbon steel taps, which keeps cost down but reduces wear resistance compared with coated tools.

Will this set re-thread damaged holes?
Yes. The set includes taper, plug and bottoming taps intended for re-threading damaged or jammed threads in typical repair situations.