{"product_id":"brass-round-flange-trapezoidal-screw-nut-tr10-tr30-positive-reverse-thread","title":"Brass Round Flange Trapezoidal Nut Tr10–Tr30 Positive \u0026 Reverse","description":"\n\u003ch2\u003eBrass Round Flange Trapezoidal Screw Nuts – Positive \u0026amp; Reverse Thread\u003c\/h2\u003e\n\u003cp\u003ePrecision-machined from solid brass, these round flange trapezoidal (Tr-series) screw nuts are the go-to choice for CNC machines, 3D printers, linear actuators, and general metalworking projects. Available in both standard (right-hand) and left-hand (reverse) thread configurations across a wide range of sizes, you get exactly the fit your build demands.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium All-Brass Construction:\u003c\/strong\u003e Excellent corrosion resistance, low friction, and long service life — ideal for continuous motion applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRound Flange Design:\u003c\/strong\u003e The flanged collar provides a secure, stable mounting surface and prevents axial displacement during operation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Size Range:\u003c\/strong\u003e Positive thread sizes Tr10×2 through Tr30×6; reverse (left-hand) thread sizes TrL10×2 through TrL28×5. Pick the exact pitch and diameter you need.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustomisable Quantities:\u003c\/strong\u003e Order 1, 2, 3, or 5 pieces — perfect for prototyping, replacement, or full builds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTight Tolerances:\u003c\/strong\u003e Machined to ±0.3 mm for consistent, reliable thread engagement every time.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBoth Thread Hands Supported:\u003c\/strong\u003e Standard (right-hand) and reverse (left-hand) threads available, enabling anti-backlash and dual-drive configurations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eBrass (All-Copper)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eRound Flange Trapezoidal Nut\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eTr (ISO Trapezoidal)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003ePositive Thread Sizes\u003c\/th\u003e\n\u003ctd\u003eTr10×2, Tr12×3, Tr14×3, Tr16×3, Tr16×4, Tr18×4, Tr20×4, Tr22×5, Tr24×4, Tr24×5, Tr25×5, Tr28×5, Tr30×6\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eReverse Thread Sizes\u003c\/th\u003e\n\u003ctd\u003eTrL10×2, TrL12×3, TrL14×3, TrL16×3, TrL16×4, TrL18×4, TrL20×4, TrL22×5, TrL24×4, TrL25×5, TrL28×5\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eTolerance\u003c\/th\u003e\n\u003ctd\u003e±0.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eQuantity Options\u003c\/th\u003e\n\u003ctd\u003e1 \/ 2 \/ 3 \/ 5 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eCustomisation\u003c\/th\u003e\n\u003ctd\u003eAvailable\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCNC router \u0026amp; milling machine lead screws\u003c\/li\u003e\n  \u003cli\u003e3D printer Z-axis drive mechanisms\u003c\/li\u003e\n  \u003cli\u003eLinear motion actuators \u0026amp; stages\u003c\/li\u003e\n  \u003cli\u003eLathe cross-slide \u0026amp; feed-screw assemblies\u003c\/li\u003e\n  \u003cli\u003eDIY automation and robotics projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-in-1-multi-functional-bone-wrench-hex-socket-spanner-portable-repair-hand-tool-for-bicycle-motorcycle-furniture-assembly\"\u003e10-in-1 Multi-Functional Bone Wrench Hex Socket Spanner – Portable Repair Hand Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/16-in-1-multi-function-bike-repair-tool-portable-folding-hex-wrench-set-for-bicycle-motorcycle-furniture-maintenance-hand-tools\"\u003e16-in-1 Multi-Function Folding Hex Wrench Set – Portable Repair Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/3-in-1-precision-eyeglass-screwdriver-keychain-portable-mini-screwdriver-for-glasses-watch-spectacles-repair-hand-tool\"\u003e3-in-1 Precision Eyeglass Screwdriver Keychain – Mini Portable Repair Tool\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the difference between positive thread (Tr) and reverse thread (TrL) flange nuts?\u003c\/h4\u003e\n\u003cp\u003eA: Positive thread (Tr) nuts have a standard right-hand thread — they tighten clockwise. Reverse thread (TrL) nuts have a left-hand thread — they tighten counter-clockwise. Left-hand nuts are commonly used in anti-backlash assemblies or on the opposite side of a dual-drive lead screw to keep both nuts moving symmetrically.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Are these brass trapezoidal flange nuts compatible with standard Tr lead screws?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. These nuts conform to the ISO trapezoidal thread standard (Tr series), making them compatible with any matching Tr lead screw of the same nominal diameter and pitch (e.g. a Tr16×4 nut fits a Tr16×4 lead screw). Always verify both diameter and pitch before ordering.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I get a custom size or quantity not listed?\u003c\/h4\u003e\n\u003cp\u003eA: Customisation is available. If you require a size or quantity outside the standard options listed, please reach out via the store's contact page with your specific requirements.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Why choose brass over steel or plastic for trapezoidal lead screw nuts?\u003c\/h4\u003e\n\u003cp\u003eA: Brass offers a favourable balance of low friction, corrosion resistance, and machinability. It runs quietly against steel lead screws, requires less lubrication than plain steel-on-steel contact, and outlasts plastic (e.g. POM\/Delrin) nuts in higher-load or higher-temperature environments.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between positive thread (Tr) and reverse thread (TrL) flange nuts?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Positive thread (Tr) nuts have a standard right-hand thread — they tighten clockwise. Reverse thread (TrL) nuts have a left-hand thread — they tighten counter-clockwise. 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