Staple

Product Description:

U-shaped staples are standardized U-shaped fasteners specially designed for pneumatic/electric staple guns. The core difference from ordinary U-shaped nails lies in their high dimensional accuracy and compatibility with automated tools, making them widely used in scenarios requiring efficient fastening such as decoration, furniture manufacturing, and packaging.

Core Features

Standardized Sizes
Specifications are strictly matched to staple gun models, usually expressed as wire diameter × leg length × crown width (crown width refers to the width of the U-shaped top), e.g., 1.2mm×10mm×12mm.
Common crown widths include 10mm, 12mm, 14mm, etc., with leg lengths ranging from 6mm to 50mm, catering to the fastening needs of materials of different thicknesses.
Materials & Surface Treatments

Basic Material: Low-carbon steel (cost-effective and ductile, suitable for non-load-bearing fastening of wood, non-woven fabrics, etc.).
Rust-resistant Materials: Galvanized steel (electro-galvanized/hot-dip galvanized, for humid environments); stainless steel (304/316 grades, for outdoor or corrosion-resistant applications).
Special Treatments: A small number of products are spray-coated or electrophoretically coated for both rust prevention and aesthetics.

Structural Design
The legs are mostly smooth cylinders or slightly ribbed, with a flat top (crown). After firing, they can fit tightly against the surface of the fastened object to avoid warping. Some heavy-duty staples have anti-slip ridges on the legs to enhance tensile resistance after fastening.

Main Categories & Applications

Type	Characteristics	Typical Applications
Light-duty U-shaped Staples	Thin wire diameter (0.6–1.0mm), short leg length (6–20mm)	Fastening furniture upholstery (sofa bottom lining, cushion covering), non-woven fabric/paper binding, fixing decorative painting backboards
Medium-duty U-shaped Staples	Medium wire diameter (1.0–1.4mm), moderate leg length (15–30mm)	Woodworking frame splicing, skirting board installation, sealing wooden/cardboard boxes, fixing wire ducts
Heavy-duty U-shaped Staples	Thick wire diameter (1.4–2.0mm), long leg length (25–50mm)	Fixing outdoor fences, assembling wooden pallets, temporary reinforcement of construction formwork, connecting metal mesh to wooden supports

Usage Notes

Match the corresponding staple gun model. Staples of different crown widths cannot be mixed, otherwise, jamming or misfiring may occur.
When fastening hard materials (e.g., thick wood boards, thin metal sheets), it is recommended to drill pilot holes first to prevent the staples from bending or breaking.
For outdoor use, prioritize stainless steel or hot-dip galvanized staples to avoid rust affecting the fastening effect.

Differences from Ordinary U-shaped Nails

Comparison Dimension	U-shaped Staples	Ordinary U-shaped Nails
Dimensional Accuracy	High, manufactured to standards	Low, wide tolerance range
Applicable Tools	Pneumatic/electric staple guns (automated)	Manual hammering or simple nailers
Fastening Efficiency	High, suitable for batch operations	Low, suitable for scattered, small-scale use
Cost	Slightly higher (with precision processing premium)	Lower