Extra large decorative nail heads can add a bold, old-world accent to doors, shutters, beams, gates, and furniture. For the largest round profile, the Otoolling 2-inch clavos are the most prominent option; the 1.5-inch and 1.25-inch versions offer slightly smaller round heads. The square-head KOLLIEE set changes the look, while Sidco Supply’s 1-inch clavos suit projects where quantity and a hammered black finish matter.
| Product | Head Size | Best For |
|---|---|---|
| Otoolling Large Iron Clavos | 2 inches | Maximum visual coverage |
| Otoolling Black Clavos | 1.5 inches | Large round accents |
| Otoolling Antique Clavos | 1.25 inches | Bold but more restrained detail |
| KOLLIEE Square Clavos | 1 inch | Geometric decorative pattern |
| Sidco Supply Iron Clavos | 1 inch | Hammered finish and 50-piece set |
Otoolling 2-Inch Large Iron Clavos

Best for projects where the nail head itself should be a prominent design feature, this Otoolling set has 50 round iron clavos with a 2-inch-diameter head and an approximately 1-inch shank. The matte black finish is intended to complement rustic or modern decorative styles.
The listing describes the iron as durable and resistant to rust, and identifies indoor and outdoor uses such as wood doors, shutters, faux beams, gates, and furniture. Its broad head gives more visible coverage than the smaller Otoolling sizes in this selection.
Choose this if you want the largest listed round head among these clavos. Consider the limitation: a 2-inch head may look oversized on narrow trim or small furniture, so measure and plan the layout before installation.
Otoolling 1.5-Inch Black Clavos

Best for a substantial round accent that is smaller than the 2-inch option, this set includes 50 iron clavos. Each head measures about 1.5 inches across, and each shank is about 1 inch long. The matte black finish provides a dark, understated contrast against many wood surfaces.
The product is described for decorative use on doors, shutters, faux wood beams, gates, and furniture. The listed head size makes it a middle choice in Otoolling’s three large round options here: more prominent than 1.25 inches, but less expansive than 2 inches.
Best for homeowners who want a clearly visible decorative head without choosing the largest profile. Keep in mind: the 1-inch shank length should be checked against the thickness and construction of the wood before use.
Otoolling 1.25-Inch Antique Clavos

Best for adding a large, round detail without the scale of a 1.5- or 2-inch head, this Otoolling set contains 50 iron nails. The heads measure about 1.25 inches in diameter, with shanks approximately 1 inch long. The listing describes a matte black finish and an antique decorative style.
These clavos are presented for wood doors, shutters, faux beams, gates, and furniture. The broad circular head is designed to provide wider visual coverage than a standard small nail head, making the set useful when a decorative pattern needs to remain noticeable from a distance.
Choose this if you want a compromise between extra-large impact and a more restrained scale. Limitation: it has less head coverage than the 1.5- and 2-inch alternatives.
KOLLIEE 1-Inch Square Clavos

Best for buyers who want a geometric alternative to round clavos, this 50-piece set has square heads measuring approximately 1 inch across and 1-inch shanks. The listing describes reliable iron construction with a matte black finish designed to resist rust and maintain its appearance indoors or outdoors.
The square shape can create a different visual rhythm when nails are arranged along a door, shutter, or furniture edge. The product is intended for wood applications and is described as providing broad coverage and stability.
Choose this if shape is as important as size and you want a consistent square-head pattern. Limitation: its 1-inch head is smaller than the round extra-large options above.
Sidco Supply 1-Inch Iron Clavos

Best for wood projects that call for a hammered black appearance, Sidco Supply’s 50-piece set has 1-inch-diameter heads and 1-inch shanks. The product description specifies a powder-coated hammered black finish and high-quality steel intended to reduce bending during installation compared with cheaper nail heads.
The listed uses include farmhouse shutters, barn doors, furniture, and other home improvement projects. It is a practical choice when the finish and stated steel construction matter more than having the largest head in the group.
Choose this if you prefer hammered texture and a 50-piece quantity. Limitation: the 1-inch head is not as large as the Otoolling round options.
Buying Guide: How To Choose Decorative Nail Heads
What head size suits the project?
Start by measuring the wood surface and deciding how visible each accent should be. A 2-inch head is the boldest listed choice, while 1.5 and 1.25 inches provide large round accents at a smaller scale. One-inch heads are better suited to tighter layouts or repeated details. Test the spacing visually before installing a full row.
Should you choose round or square heads?
Round clavos create a traditional, softened look; square heads provide a more angular pattern. Consider the shape of nearby hardware and trim so the nail heads complement rather than compete with those details.
How important are shank length and material?
Check the listed shank length against the wood thickness and intended installation. Several products here specify a 1-inch shank. The listings identify iron or steel construction, but do not provide a universal installation method. Follow appropriate woodworking practices and avoid forcing a nail if the wood resists.
How many pieces should you buy?
Estimate the number of nails needed for the planned pattern, then allow for replacements or layout adjustments. The featured sets contain 50 pieces; the table compares their head sizes to help narrow the choice. Keep head size, spacing, and quantity consistent across one visible surface for a coordinated result.
Frequently Asked Questions
What are decorative clavos?
Clavos are decorative nail-like fasteners with prominent heads, commonly used to add an ornamental accent to wood doors, shutters, beams, gates, and furniture.
Which option has the largest head?
The Otoolling round clavos listed here have the largest head at approximately 2 inches in diameter.
Are these products intended for outdoor use?
Some listings describe their clavos as suitable for indoor and outdoor applications. Check the individual product details and consider the conditions where the hardware will be used.
How do I choose between 1.25-, 1.5-, and 2-inch heads?
Choose based on the scale of the wood surface and the prominence you want. The 2-inch head is most dramatic; 1.5 inches is a middle ground; 1.25 inches is a more restrained large-head option.