Drill America DWTP33X2 m33 x 2 HSS 4 Flute Plug Tap - Re-Threading

In this review the Drill America DWTP33X2 m33 x 2 plug tap is examined as a straightforward re-threading and threading tool for general shop use. The bottom line: this single high speed steel plug tap is best for users who need a sharp, versatile tap for thru holes and occasional machine or hand tapping work. Its main attraction is the HSS cutting geometry and four-flute design that produce clean threads in common ferrous and softer materials, but buyers should be aware that some users report breakage under heavy abuse.

Key Features

• Material: High speed steel construction gives a balance of toughness and sharpness for cutting new threads and re-threading damaged holes.
• Flute design: Four flutes improve chip evacuation and produce a smoother cut in thru holes compared with two-flute taps.
• Plug style: Designed for thru holes, the plug style starts threads quickly while leaving a few lead threads for alignment.
• Hand and machine use: Suitable for hand tapping or tapping under power, making it flexible for bench work and light CNC or machine operations.
• Uncoated finish: The uncoated tool provides the raw HSS substrate, making it appropriate across a range of materials where coatings are unnecessary or undesirable.

Who It's For

This plug tap suits hobbyists, maintenance technicians, and machine shop users who need a single, reliable HSS tap for thru holes and general re-threading tasks. It is particularly useful when working with softer metals like aluminum or for occasional use in steel where a sharp tool is preferred.

Users who regularly tap hard exotic alloys, require highest durability under heavy production loads, or need a matched set of taper, plug, and bottoming taps for blind holes should consider a dedicated set or coated, higher-performance taps built for production environments.

Pros & Cons

Pros

• Sharp HSS cutting edges deliver clean thread profiles and good cut quality in common shop materials.
• Four-flute geometry helps clear chips in thru holes, reducing jamming for many applications.
• Versatile for both hand and light machine tapping, offering solid value for occasional use.

Cons

• Some customers report durability issues and tap breakage under heavy or improper use, so it is not ideal for high-production or abusive environments.

Specifications

Our Verdict

The DWTP33X2 m33 x 2 HSS 4 flute plug tap is a practical, cost-effective choice for general threading and re-threading of thru holes, offering sharp cutting and good chip control for hobby and light shop work. It delivers solid value when used appropriately, but professionals with heavy production needs should look for higher durability or coated alternatives.

Frequently Asked Questions

Can this tap be used in a drill press or CNC?
Yes, it is suitable for tapping under power as well as hand use, but proper speed, feed, and lubrication are important to avoid breakage.

Is this tap part of a set?
This listing is a single plug tap; a full tap set typically includes taper, plug, and bottoming taps for blind-hole work.

What materials does the tap work well in?
Its HSS construction works well in aluminum, mild steel, and general shop materials; avoid excessive force in hard alloys to prevent breakage.