🔩 Brass Ball Cap Nuts – Lamp Finial Screw Caps (Female Thread M3–M12, Ball Dia 6–25mm)

If you’re restoring an old chandelier, building a custom table lamp, or just need a classy way to cap a threaded rod, these brass ball cap nuts are a simple upgrade. They screw onto male threads (M3 to M12) and cover the end with a polished brass ball. No more exposed nut or ugly acorn cap – the rounded shape looks like a tiny decorative finial. I’ve used them on lamp harp assemblies, furniture legs, and even as drawer pulls. Ball diameters range from 6mm (small and subtle) up to 25mm (bold and weighty). Solid brass, no plating to chip. Just warm, natural metal that ages gracefully.

✨ Why These Threaded Brass Ball Caps Belong in Your Workshop

💡 Perfect for lamps & chandeliers – Screws onto the top of a lamp harp or the end of a threaded rod to secure the shade and add a decorative finish. A true lamp finial screw cap.

🔩 Female threads M3 to M12 – M3, M4, M5, M6, M10, and M12. Match the thread to your rod or stud. The internal thread depth is proportional to the ball size.

🎾 Ball diameters from 6mm to 25mm – Choose 6mm, 8mm, 10mm, 12mm, 15mm, 16mm, 17.5mm, 20mm, 21.5mm, or 25mm. Smaller for delicate fixtures, larger for substantial furniture or heavy lamps.

🟤 Solid brass construction – no plating – Raw brass has a warm, golden tone that darkens nicely over time. No cheap zinc or plastic. Polishes easily if you want to keep it shiny.

🛠️ Multi‑purpose: furniture, knobs, finials – Use as a decorative cap on exposed bolts, a handle for small drawers, a foot for a metal stand, or a final touch on a custom metalwork project.

📐 Precise metric threads – Cleanly cut, consistent pitch. Screws on smoothly without cross‑threading. Refer to the attached parameter diagram for exact thread length and ball dimensions per size.

📏 Technical Specifications – Brass Ball Cap Nuts

❓ Frequently Asked Questions – Brass Ball Cap Nuts