spijkers

Spijkers are metal fasteners used to join materials, typically wood, by driving a pointed shaft into the workpieces so that the head secures the joint. They are a common element in carpentry and construction and come in many sizes, materials, and coatings. The most widespread form is the nail, which is made from steel and may be galvanized, stainless, copper, or brass to suit environmental exposure. Variants include finishing nails (small heads for discrete finishing work), brads, framing nails (larger, high-load nails for structural connections), roofing nails, and masonry nails. Some nails feature rings or spirals in the shank to resist withdrawal, while others have smooth shanks for easier driving.

Manufacturing has shifted from hand-forged, craft nails to machine-made products produced from drawn wire, cut to length, and formed with a head. Corrosion-resistant coatings, such as galvanization (zinc coating) or stainless steel, are common for outdoor or humid environments.

Usage considerations include selecting length and gauge appropriate to the material and load, using pilot holes for hardwoods, and avoiding overdriving to prevent material damage. Finishing nails and brads are favored where the nail head should be minimally visible, while larger framing or roofing nails prioritize pull resistance.

See also: nails, fasteners, carpentry.