Wiseman Threading Tools Bottom Lead Metric HSS Tap Right Hand - M3x0.35

Wiseman M3x0.35 Bottom Lead Metric HSS Tap is a precision-ground threading tool built to deliver accurate, durable internal threads in a wide range of materials. Designed for right-hand threading and bottoming applications, this tap carve threads all the way to the bottom of the hole, making it ideal for through-holes and blind holes that require full-depth engagement.

Crafted from high-speed steel and meticulously ground, this tap offers a reliable cutting edge, crisp thread form, and solid performance under typical shop conditions. The uncoated finish keeps copper and aluminum swarf from sticking excessively and makes lubrication choice flexible, so you can tailor cutting fluid to your material and setup.

Key features

• Size and pitch: M3 x 0.35 — compact and precise for small fasteners often used in electronics, enclosures, and micro-machining projects.
• Bottom lead / bottoming tap: Cuts threads to full depth, enabling complete engagement for reliable fastener fit in blind cavities or recessed assemblies.
• Right-hand thread: Standard threading direction for most common fasteners and assemblies.
• Material: High-speed steel (HSS) with a precision ground flute profile for smooth cutting and durable performance across softer steels, brass, and some plastics.
• Finish: Uncoated, offering broad compatibility with a range of cutting fluids and heat conditions while preserving sharpness for clean, repeatable threads.
• Standards: ISO 529 compliant, ensuring compatibility with standard metric thread forms and predictable results across compatible workpieces.

What problems does it solve?

• Delivers crisp, accurate internal threads for small-diameter fasteners where precision matters—think precision brackets, small housings, and electronic enclosures.
• Allows full-depth threading in blind holes, reducing guesswork and the need for multiple tools to achieve the same result.
• Offers dependable performance without coating delamination, giving you predictable results in a variety of workshop environments.

Ideal for: hobby machinists, electronics enthusiasts, repair technicians, and small-assembly professionals who need reliable, repeatable M3x0.35 threads and compact tooling that fits tight spaces.

Usage tips:

• Drill to the ISO-standard pre-drill size for M3x0.35 before tapping; use a sharp drill and deburr the hole edge before starting.
• Lubricate generously with a suitable tapping fluid to reduce work hardening and extend tool life.
• Align the tap squarely with the hole, then apply steady, even pressure. Rotate 2–3 turns, back off slightly to break chips, and then continue to the required depth.
• Clean the threads after tapping and test fit with the intended fastener to verify a clean, accurate engagement.

With the Wiseman Threading Tools Bottom Lead Metric HSS Tap, you gain a dependable, purpose-built solution for creating precise metric threads in small-diameter holes. It’s a smart choice for builders who value accuracy, repeatability, and straightforward tooling that performs consistently across jobs.