Duplex Double Head Nail

 

 

Duplex Nails / Double Headed Nails / Scaffold Nails / Formwork Nails

(ASTM F1667 / ISO Standard)

Key Features

  • Easy Removal​ — The exposed second head creates a leverage point for quick and damage-free extraction.
  • Reusable​ — Nails can be removed intact and reused multiple times, making them highly economical for formwork and scaffolding.
  • Strong Holding Power​ — Available with Ring Shanks​ (helical grooves) for superior grip in softwood and plywood.
  • Standardized Spacing​ — Consistent distance between the two heads ensures compatibility with standard lumber dimensions.
  • Bright Finish​ — Typically supplied in a bright (uncoated) finish for easy driving and removal (no friction from coating).
  • Versatile Application​ — Ideal for any temporary wood-to-wood connection requiring future disassembly.

Description

Duplex Double Head Nails​ are specialized fasteners designed primarily for temporary construction applications, such as scaffolding planks, formwork (shuttering), and bracing. As the name suggests, these nails feature two heads. The first head secures the nail into the wood, while the second head remains exposed above the surface. This unique design allows for easy removal once the job is done—simply strike the nail from the side to pivot it, then pull it out with a hammer. Our duplex nails are manufactured from high-quality carbon steel with a smooth shank or ring shank, ensuring both strong holding power during use and effortless extraction afterward, saving time and money on material costs.

Item Detail
Material​ Carbon Steel Q195 / Q235 / 45# Steel
Head Type​ Double Head (Flat Head / Checkered Head)
Shank Type​ Smooth Shank / Ring Shank​ (Recommended for scaffolding)
Nail Length​ 2″ / 2.5″ / 3″ / 3.5″ / 4″ (50 mm – 100 mm)
Wire Gauge​ 8D / 10D / 12D / 16D (Common: 10D = 3″ x 0.148″)
Head Diameter​ 5/16″ / 3/8″ / 7/16″ (8 mm – 11 mm)
Head Spacing​ 1/4″ / 3/8″ / 1/2″ (Standard gap between heads)
Surface Finish​ Bright (Plain) / Electro-Galvanized / Hot Dipped Galvanized
Point​ Diamond Point
HS Code​ 7317.00.00

Applications

  • Scaffolding​ — Securing planks to scaffold tubes and frames (most common use).
  • Concrete Formwork​ — Building and stripping plywood forms for foundations and walls.
  • Shoring & Bracing​ — Temporary support structures for walls, trenches, and excavations.
  • Staging & Platforms​ — Building temporary stages, ramps, and walkways for events.
  • Garden & Greenhouse​ — Temporary framing for raised beds or hoop houses.

Packaging & Shipping

  • Bulk Packaging:​ 25 lbs / 50 lbs (11 kg / 22 kg) per carton or woven bag.
  • Small Packs:​ 1 lb / 5 lbs boxes available for retail or small projects.
  • Palletizing:​ Cartons are palletized for safe container shipping (20′ GP: approx. 20–25 tons).
  • Custom Marking:​ We can print your company logo or size on the box/bag.