Duplex Nails

A duplex nail is a two-headed nail that was invented in 1916 by William Arthur Collings to replace common nails used in formwork. Before the invention of duplex nails, common nails were widely used in formwork. Today, duplex nails are most commonly used in temporary construction, such as building wooden scaffolding, formwork, or temporary wood braces. The nail is hammered only to the first head leaving a gap with the second so the nail can be easily removed using a hammer.

SizeØ, mmLength, mmDistance between heads, mmTop Head Ø, mmLower Head Ø, mmScrewRingSmooth
6D2.8750.86.355.957.15+
8D3.3363.56.355.957.15+
10D3.7676.29.555.958.75+
16D4.1188.99.557.158.75+
Other nail sizes, point, top and shank modifications are available upon request.

Nail shank types:

  • Smooth

Nail Cutting Point types:

  • Diamond

Nail finishing types:

  • Bright
  • White
  • Yellow

Also we can offer nails from low and high carbon or stainless steel.

500-1000 kg

big carton box

1 box

on a pallet

25 kg

small carton box

36 boxes

on a pallet

Nails can be packed in unlabeled carton boxes or carton boxes with our logo.
On request, individually selected logos, texts or other graphics may be printed on the packaging.
Other packaging options are available upon request.