Double Head Nails Duplex Head Nails

• Customization: Available
• Standard: ANSI, DIN, GB, ISO, JIS
• Type: Common Nail
• Model NO.: 6D-30D
• Material: Iron
• Surface Treatment: Polished or Galvanized
• Head: Two Head
• Shank: Smooth Shank
• Usage: Building Construction, Wooden Furniture, Decoratio
• Transport Package: Carton
• Specification: 1′ ′ to 6′ ′
• Origin: China Mainland
• HS Code: 73170000
• Production Capacity: 3000 Tons Per Month

Product Description

Product Name	Double Head Nails
Material	Q195/Q215
Shank Type	Smooth shank
Length	1''- 4''
Shank Diameter	BWG3-BWG6(2.40MM-5.16mm)
Surface Treatment	Polished, electro galvanized, hot dipped galvanized and others
Packing	5kg per box, 1kg per box or bag, 500g per bag, 50lbs/carton, 25kgs per carton or as customer's requirement

Size	Gauge No.	Length Overall in.	Length Under Lower Head in.	Diam Top Head in.	Diam Lower Head in.	Approx. Number. per pound
6D	11-1/2	2-7/64	1-3/4	3/16	17/64	156
8D	10-1/4	2-5/8	2-1/4	15/64	9/32	90
10D	9	3-3/16	2-3/4	1/4	5/16	59
16D	8	3-1/2	3	9/32	11/32	45
20D	7	4-1/64	3-1/2	5/16	3/8	28
30D	6	4-37/64	4	21/64	7/16	22

Duplex head nails, also called scaffolding nails, get their name from the two layers on the head of the nail.  This keeps the nail from being driven completely into a surface.   When scaffolds are assembled, it is not usually supposed to be permanent, so these nails are often used and reused.   Forms for foundations and temporary hurricane barriers over windows are other common uses for duplex nails.

Advantages Over Traditional Fasteners

1. Precision and Control
   The secondary head eliminates guesswork during installation, ensuring consistent depth and reducing material waste.

2. Enhanced Load Distribution
   The wider primary head minimizes surface pressure, preventing cracks in brittle materials like PVC or fiber cement.

3. Time and Cost Efficiency
   Compatibility with pneumatic tools accelerates installation speeds by up to 40% compared to screws or single-headed nails.

4. Removability
   Unlike rivets or adhesives, dual head cap nails can be extracted without damaging substrates, facilitating repairs or modifications.

5. Corrosion Resistance
   Advanced coatings extend service life in harsh environments, reducing maintenance costs.