Chimney Nuts / Spire Clips – Metric U-Nut Panel Speed Fasteners, BZP (M4–M8)

Chimney nuts — also called spire clips, U-nuts or panel speed fasteners — in zinc-plated spring steel, sizes M4 to M8. They clip over a panel edge to give a threaded fixing point where there isn't one, then take a machine screw or self-tapping screw.

Material
Zinc-plated spring steel

Finish
Bright zinc plated (BZP) for corrosion resistance

How they work
Push the clip over the panel edge, line up the hole and drive a screw straight into it — a fast, reusable fixing with no tapping or welding needed

Panel thickness
Suits panels from 0.5mm to 4mm

Sizes (clip dimensions)
M4 – 15 × 10mm, M5 – 20 × 14mm, M6 – 23 × 15mm, M8 – 24 × 17mm

Uses
Automotive body panels and trim, wheel-arch liners, splash guards, sheet-metal fixing and general panel mounting

Quantities available
Choose your size and quantity above — available in packs of 10, 25, 50, 100 or 1000.

Need a mixed set? See our assorted chimney-nut and speed-fastener boxes.

Also known as spire clips, spire nuts, U-nuts, U-clips, speed nuts, speed fasteners or lug nuts.