TOMMARS thread file set — 3-piece SAE & Metric kit, hardened carbon steel files with snap-on caps and slim sleeve

The TOMMARS 3-piece SAE and Metric thread file set is a compact, hardened-carbon-steel kit made to restore and clean damaged external threads on bolts, shafts, studs, and pipe ends.

When a bolt or stud has flattened, rusted, or crushed threads, a thread file can be the quickest way to get a fast, accurate repair without replacing the part. This TOMMARS set combines three purpose-made files that cover the most common SAE and metric thread profiles, each with precision-cut teeth, snap-on safety end caps, and a slim storage sleeve for workshop or field use. The set is sized to handle everyday automotive, plumbing, and machinery thread damage so you can avoid downtime and costly part swaps.

Which thread sizes does this set restore?

The set includes a broad selection of both standard and metric pitches to handle everyday repairs. Each file was cut to match common external thread geometries so you can re-form damaged crests and remove corrosion without overcutting the part.

• SAE coverage: 9, 10, 12, 16, 20, 27, 28, 32 and 11, 12, 13, 14, 16, 18, 20, 24 (common imperial pitches)
• Metric coverage: 0.75mm, 1.00mm, 1.25mm, 1.50mm, 1.75mm, 2.00mm, 3.00mm
• Three files sized to match the grouped pitch ranges for quick selection
• Ideal for bolts, studs, small shafts, and pipe end threads

How durable and precise are the cutting teeth?

The files are made from hardened carbon steel and have uniformly ground teeth designed for consistent passes and controlled material removal. They are intended for restoring the thread profile rather than cutting new threads from solid stock.

• Hardened carbon steel body for wear resistance during repeated use
• Precision-cut tooth pattern for smooth restoration and minimal chatter
• Best used with light, steady pressure to preserve original thread form
• Not a substitute for a die when manufacturing new threads

What safety and storage features are included?

Each tool comes with a snap-on protective end cap to shield the cutting edges and to give a safer, more comfortable grip during use. A slim storage sleeve keeps the trio organized and protected in toolboxes or field kits.

• Snap-on end caps protect teeth and fingers during handling
• Compact sleeve stores files separately to prevent edge damage
• Slim profile fits glove boxes, tool carts, and repair bags
• Lightweight set for carrying to job sites or keeping on hand for quick fixes

Who is this for? The TOMMARS thread file set is aimed at mechanics, plumbers, millwrights, and DIYers who need a fast, low-cost way to rescue damaged external threads without sourcing replacement parts. If you regularly encounter corroded or flattened threads on vehicles, machinery, or piping, this set gives you portable, precise tools to clean and re-form threads on the spot. It also suits home shops and mobile technicians who want an organized, durable repair option that fits alongside wrenches and gauges.