Brass Round Flange Trapezoidal Nut Tr10–Tr30 Positive & Reverse
Brass Round Flange Trapezoidal Nut Tr10–Tr30 Positive & Reverse
Brass Round Flange Trapezoidal Screw Nuts – Positive & Reverse Thread
Precision-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.
Key Features
- Premium All-Brass Construction: Excellent corrosion resistance, low friction, and long service life — ideal for continuous motion applications.
- Round Flange Design: The flanged collar provides a secure, stable mounting surface and prevents axial displacement during operation.
- Wide Size Range: 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.
- Customisable Quantities: Order 1, 2, 3, or 5 pieces — perfect for prototyping, replacement, or full builds.
- Tight Tolerances: Machined to ±0.3 mm for consistent, reliable thread engagement every time.
- Both Thread Hands Supported: Standard (right-hand) and reverse (left-hand) threads available, enabling anti-backlash and dual-drive configurations.
Specifications
| Material | Brass (All-Copper) |
|---|---|
| Type | Round Flange Trapezoidal Nut |
| Thread Standard | Tr (ISO Trapezoidal) |
| Positive Thread Sizes | Tr10×2, Tr12×3, Tr14×3, Tr16×3, Tr16×4, Tr18×4, Tr20×4, Tr22×5, Tr24×4, Tr24×5, Tr25×5, Tr28×5, Tr30×6 |
| Reverse Thread Sizes | TrL10×2, TrL12×3, TrL14×3, TrL16×3, TrL16×4, TrL18×4, TrL20×4, TrL22×5, TrL24×4, TrL25×5, TrL28×5 |
| Tolerance | ±0.3 mm |
| Quantity Options | 1 / 2 / 3 / 5 pcs |
| Customisation | Available |
| Country of Origin | Made in China |
Common Applications
- CNC router & milling machine lead screws
- 3D printer Z-axis drive mechanisms
- Linear motion actuators & stages
- Lathe cross-slide & feed-screw assemblies
- DIY automation and robotics projects
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Frequently Asked Questions
Q: What is the difference between positive thread (Tr) and reverse thread (TrL) flange nuts?
A: 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.
Q: Are these brass trapezoidal flange nuts compatible with standard Tr lead screws?
A: 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.
Q: Can I get a custom size or quantity not listed?
A: 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.
Q: Why choose brass over steel or plastic for trapezoidal lead screw nuts?
A: 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.
Production & Packaging Notice
To 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.