{"product_id":"tommars-thread-file-set-3-piece-sae-metric-external-thread-repair-hardened-carbon-steel","title":"TOMMARS Thread File Set — 3-Piece SAE \u0026 Metric External Thread Repair, Hardened Carbon Steel","description":"\u003cp\u003e\u003cstrong\u003eTOMMARS 3-piece thread file set restores damaged external threads on bolts, studs, shafts and pipe ends in both SAE and metric sizes.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis compact kit brings three hardened carbon-steel thread files designed for accurate, hand-controlled reshaping and cleaning of crushed, rusted, or flattened threads. Each file has precision-cut teeth and snap-on protective end caps, and the set includes the most commonly needed SAE and metric thread pitches so you can quickly match and repair external threads without replacing fasteners or parts.\u003c\/p\u003e\n\n\u003ch3\u003eWhich thread sizes are covered in this set?\u003c\/h3\u003e\n\u003cp\u003eThe three files together cover a broad selection of SAE and metric pitches to handle most common repair tasks. You’ll find SAE sizes covering small to mid-range threads and metric pitches from fine to coarse, letting you match threads on automotive, plumbing and machinery components.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSAE: 9, 10, 12, 16, 20, 27, 28, 32 and 11, 12, 13, 14, 16, 18, 20, 24 for a wide selection of U.S. standard pitches.\u003c\/li\u003e\n  \u003cli\u003eMetric: 0.75mm, 1.0mm, 1.25mm, 1.50mm, 1.75mm, 2.00mm, 3.00mm to tackle most metric external threads.\u003c\/li\u003e\n  \u003cli\u003eThree-file arrangement groups compatible sizes for fast selection during repairs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do the files work and what makes them durable?\u003c\/h3\u003e\n\u003cp\u003eEach file is cut from hardened carbon steel and ground with uniform, sharp teeth sized for external threads. The tooth geometry supports smooth cutting action when you run the file along the thread ridges, removing corrosion or deformation while preserving the thread profile.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHardened carbon-steel construction for long life and consistent cutting.\u003c\/li\u003e\n  \u003cli\u003ePrecision-cut teeth for controlled material removal without excessive waste.\u003c\/li\u003e\n  \u003cli\u003eSnap-on end caps protect edges when not in use and improve hand comfort when filing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are practical uses and how do I use the set safely?\u003c\/h3\u003e\n\u003cp\u003eUse the thread files to clean, reshape, and rebuild external threads on bolts, studs, shafts, and pipe ends before replacement. Hold the file so teeth engage the thread crest and stroke steadily along the thread direction; check fit frequently against a nut or mating part to avoid overcutting.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIdeal for automotive, marine, plumbing and light industrial repairs in the field or shop.\u003c\/li\u003e\n  \u003cli\u003eUse short, controlled strokes and test fit often to preserve thread integrity.\u003c\/li\u003e\n  \u003cli\u003eKeep protective end caps on until ready to use and store files in the provided sleeve to prevent damage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow is the set stored and transported?\u003c\/h3\u003e\n\u003cp\u003eThe three files come in a slim storage sleeve that keeps each file separated and protected from impact. The sleeve is compact enough for toolboxes, glove compartments and field kits so you can take the set to on-site repairs without adding bulk.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompact storage sleeve organizes and protects the files between uses.\u003c\/li\u003e\n  \u003cli\u003eSlim profile fits in tool carts, glove boxes and repair pouches.\u003c\/li\u003e\n  \u003cli\u003eQuick visual identification of SAE and metric files speeds selection on the job.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Technicians, mechanics, maintenance staff and DIYers who want a low-cost, portable solution for restoring external threads will find this TOMMARS set helpful. It’s designed for people who need reliable thread cleanup and repair on-site or in the workshop, without the expense of replacing bolts, studs or parts. If you frequently work on older equipment, plumbing, engines or fabricated assemblies, the set covers the common SAE and metric pitches you’ll encounter and stores neatly in a toolbox or glove compartment.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are SAE and metric sizes both included?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The set includes common SAE pitches and metric threads (0.75mm–3.00mm) to cover most external thread repairs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can these files fix severely damaged threads?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They work well for cleaning, reshaping, and restoring many damaged threads, but extremely worn threads may still require replacement.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"TOMMARS","offers":[{"title":"Default Title","offer_id":67589799116985,"sku":"B0BCP7LC6C","price":77.55,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/tommars-front-view-packaging.jpg?v=1790532121","url":"https:\/\/redleafauto.ca\/products\/tommars-thread-file-set-3-piece-sae-metric-external-thread-repair-hardened-carbon-steel","provider":"Redleaf Auto","version":"1.0","type":"link"}