TOMMARS Thread Chaser Set — 49-Piece UNC, UNF & Metric Kit, Hardened Carbon Steel, Color-Coded

TOMMARS 49-piece Thread Chaser Set is a complete UNC, UNF and metric thread chasing kit designed to clean and restore damaged threads without removing useful metal.

This organized thread repair kit supplies 49 color-coded taps and dies in UNC (silver), UNF (black) and metric (gold) sizes so you can chase corroded or dirty fasteners and bolt holes quickly on engines, machinery and vehicle bodies. Built from hardened carbon steel with hex-shaped tools for wrench or socket fitting, the set focuses on thread restoration rather than re-cutting, helping preserve part integrity while making future fastening reliable.

What sizes and standards are included in the set?

The kit covers common SAE coarse (UNC) and fine (UNF) threads plus widely used metric pitches for automotive and mechanical repairs. Sizes are grouped and color-coded for fast selection.

• UNC (silver): 5/8"-11, 9/16"-12, 1/2"-13, 7/16"-14, 3/8"-16, 5/16"-18, 1/4"-20
• UNF (black): 5/8"-18, 9/16"-18, 1/2"-20, 7/16"-20, 3/8"-24, 5/16"-24, 1/4"-28
• Metric (gold): M14×1.5, M12×1.75, M12×1.5, M12×1.25, M11×1.5, M10×1.5, M10×1.25, M10×1.0, M8×1.25, M6×1.0

How does this set restore threads without cutting away metal?

Thread chasers are specially ground to clean and realign worn threads instead of rethreading or tapping new material, so the original fastener fit is preserved. They remove corrosion, grease and debris while reshaping the thread profile gently.

• Chasers re-form damaged crests and roots without removing base material.
• Designed for chasing seized or rusty fasteners and stained bolt holes.
• Use a lubricant and steady hand to avoid cross-threading.

Which applications and parts benefit most from this kit?

This set is tailored for automotive maintenance, engine work, machinery repair and general workshop use where threaded holes or bolts have surface damage. It excels on cylinder heads, engine blocks, brackets and body panels where preserving thread size matters.

• Chasing spark plug and head bolt holes on engines.
• Cleaning threads on suspension or brake components before reassembly.
• Restoring threads on vintage parts that can’t be replaced easily.

What features make the TOMMARS kit convenient to use?

The set is built for practicality: hardened carbon steel construction, hex-shaped taps and dies for use with common tools, and a compact storage case. Color coding speeds up identification across standards and sizes when working under time pressure.

• Durable carbon steel for repeated use and longevity.
• Hex-shaped tools compatible with wrenches or sockets.
• Compact, labeled case keeps everything sorted and portable.

Who is this for: The TOMMARS 49-piece Thread Chaser Set is made for DIY mechanics, professional technicians, restoration hobbyists and workshop owners who need a reliable way to clean and rescue existing threads without enlarging holes. If you service engines, restore vehicles, or maintain industrial equipment and want to preserve original components while ensuring fastener security, this kit offers a practical, color-coded solution for everyday thread repair tasks.