Fastening hardware for aluminium extrusion assemblies that helps keep profiles aligned during assembly. Ideal for makers and small workshops that need consistent, repeatable joints. Are the Lyeteung M4 T Spring Nuts the right choice for hobbyists and light industrial builds?
⚡ At a Glance
- • Holding Strength: Spring ball retention prevents movement while tightening, producing secure joints
- • Best for: Hobbyists, makers and small workshops building 3D printer, CNC or robotic frames
- • Not ideal for: High-load structural applications where specialised heavy-duty fasteners are required
Roll-in M4 spring nuts designed for 20-series aluminium extrusion profiles with a spring ball that holds position. Supplied as a 30-piece set made from high-quality carbon steel for general assembly tasks.
Secure alignment during assembly – thanks to spring ball retention
A spring ball on the nut engages the slot and fixes the nut's position so the aluminium extrusion cannot slide freely before fastening. The roll-in shape fits into the slot and stays in place while a screw is introduced.
Nuts stay put during alignment, making single-handed assembly and precise adjustments much easier. Less fiddling reduces build time and frustration on multi-joint frames.
Durable joins – with high-quality carbon steel construction
Manufactured from carbon steel to provide mechanical strength and durability under repeated tightening. The material is specified as strong and durable for general fastening use.
Consistent dimensions and robust material help maintain thread integrity across repeated assemblies. Reliable performance reduces the need to replace nuts during routine projects.
Wide compatibility with 20-series profiles – thanks to M4 thread and 6mm slot fit
Specified as 20 series M4 T spring nuts suitable for aluminium extrusion profiles with a 6mm slot and compatible with 2020, 2040, 2060 and 2080 profiles. The half-round roll-in profile matches standard T/V slot rails.
Works across common extrusion sizes found in 3D printers, CNC routers and robotics projects. One part covers multiple profile widths, simplifying parts sourcing for builders.
✨ The 4 Key Reasons for Lyeteung M4 T Spring Nuts
- Spring ball retention – Prevents profile sliding so assembly aligns faster and easier
- Carbon steel construction – Withstands repeated tightening and resists deformation under load
- M4 thread compatibility – Works with standard M4 screws for secure, uniform joint strength
- 30-piece pack – Supplies multiple joints and spare parts for small builds
📋 Technical Details at a Glance
- Category: Fastening hardware
- Material: High-quality carbon steel
- Thread size: M4
- Series: 20 series
- Compatible slot width: 6mm
❓ Frequently Asked Questions
Q: Are these compatible with 2020 aluminium extrusion profiles?
A: Yes. The nuts are specified for 20-series aluminium extrusion profiles and list 2020 among the compatible sizes.
Q: Will the nuts stay in place during assembly?
A: Yes. A spring ball on the back fixes position so the nut cannot slide freely while aligning and tightening.
Q: What material are the nuts made from?
A: Made of high-quality carbon steel, described as strong and durable for general fastening applications.
🏆 Our Verdict
Suitable for makers, small workshops and anyone assembling 20-series aluminium frames, where consistent fit and quick alignment matter. The combination of spring-ball retention, M4 threading and carbon steel construction is the key selling point for reliable, repeatable joints. Good long-term value for regular builders who need dependable fasteners and a ready supply of spares.
