Roofing nails for fixing iron sheets to timber, sold by the kilogram.
Photo: “Nails Flat Head Steel Industry” by Tool Dude8mm, CC BY 2.0 (creativecommons.org/licenses/by/2.0), via Wikimedia Commons; cropped.
Common wire nails, 3 inch, sold by the kilogram. For timber framing and formwork.
Photo: “Nails Flat Head Steel Industry” by Tool Dude8mm, CC BY 2.0 (creativecommons.org/licenses/by/2.0), via Wikimedia Commons; cropped.