The Tale of Old Nails

This is a piece of 1/8-inch square rolled iron nail stock that was used by a “nailer” to hammer out a handmade nail.

This is a piece of 1/8-inch square rolled iron nail stock that was used by a “nailer” to hammer out a handmade nail.

One of the key ingredients in the process of determining the age of a piece of older or antique furniture is how the wood is assembled to produce this functional work of art. Drawers are typically put together using various methods of wood joinery, i.e. dovetails, scallop joints or rabbets. Older case goods generally employ mortise and tenon joints, as do old chairs and doors. But the most straightforward method of all construction techniques is the use of a fastener, an external device that holds two pieces of wood together without additional shaping of the wood and the simplest fastener is a nail—in essence a tapered metal dowel inserted by the brute force of a hammer blow.

Nails, of course, have been around for thousands of years, but their general application to furniture making is fairly recent. Until modern times all nails were hand made, one at a time by a blacksmith or a specialist, called a “nailer.” But since nails are such useful items, not just for furniture but for general building applications, it is not surprising that some of the first modern machinery was devoted to the manufacture of nails.

These are hand-made iron nails from the 18th century. Note the “rosehead” hammered head and the sharp point.

These are hand-made iron nails from the 18th century. Note the “rosehead” hammered head and the sharp point.

In the American Colonies, one of the early industries to be well established, after glassmaking and spirits distilling, was the nail stock business. Up and down the East coast as early as the late 17th century, rolling mills turned out long, thin, square pieces of iron called nail stock, to be sent to the local nailer.

The nailer then heated a section of the stock and pounded out a point on all four sides. After cutting to length the section was inserted in hole on the anvil called a “swage” block and the head of the nail formed by repeated blows to the top of the nail, giving it the “rosehead” look we identify with hand made nails. A lot of work for just one nail.

But this method had its rewards. The pounding of the nail to shape it made the iron denser and thus more water resistant and durable, as well as malleable (bendable). This malleability was one of the key factors in the success of the handmade nail; it was so flexible that as it was driven into a piece of wood it followed the internal grain pattern, often in an arc, and thus provided a clinching effect that help hold the nailed joint very tightly. The hand-wrought iron rosehead nails leave a very identifiable clue—a square hole—when they are removed from wood. No other type of nail leaves a square hole.

By the early 1800’s, nail cutting machines were in general use in America. These early machines cut angular strips from a thin sheet of metal resulting in a nail with two parallel sides, representing the thickness of the sheet of metal, and two cut angular sides forming the point. The heads still had to be hammered by hand and these nails are easily confused with hand-wrought nails because they both have hand hammered rose-like heads. The difference is in the shape of the hole. The machine made nails leave rectangular holes which are easily distinguished from the square marks of the earliest nails. This type of nail is the kind frequently found in early 19th century Federal and American Empire furniture and just as frequently misidentified as hand wrought.

These nails were all cut from a sheet of iron. The top nail with the “notch” head is from the early 19th century. The middle nail with the rectangular flat head is from around 1830/1840.

These nails were all cut from a sheet of iron. The top nail with the “notch” head is from the early 19th century. The middle nail with the rectangular flat head is from around 1830/1840.

Another type of early nail merely had a notch as the head. This wasn’t very effective but it was quick and cheap and machine cut nails became a staple of both the construction industry and the furniture building trade. An even better nail came around 1830. The machines by now were producing nails that actually had flattened protruding surfaces to function as the head. These were made by a single, forceful impact on the top of the nail by the machinery itself and no human work was required. As erratic and small as these new heads were, they were still the best yet.

By the 1840’s, the nail making technology settled down to making the best cut nail yet. This mid-century nail had a large, uniform, machine-made head and it became the standard nail for more than 50 years, and it continued to leave the characteristic rectangular hole. These nails are ones found in late Classicism (C-scroll Empire) and Victorian furniture throughout the rest of the 19th century. As good as these nails were however, they did have a drawback. They did not benefit from the hand pounding reserved for the making of hand wrought nails and thus were more brittle than earlier nails. This stiffness meant that they did not have the same internal clinching power as their predecessors and tended to snap off under duress rather than bend.

This is the standard wire nail first introduced around 1880.

This is the standard wire nail first introduced around 1880.

Around 1880 came the next major leap in nail development. A machine was invented that produced a round nail drawn from a piece of steel wire and formed with a perfectly circular, stamped head and a sharp, cut point. This does not mean that all cabinet shops instantly stopped using cut nails when the new style showed up. Cut nails continued to be used early into the 20th century until existing stocks were used up. And hand-wrought nails continued to be made throughout the 19th century for certain specialty applications, such as gate building and other instances where the benefits of the clinching nail outweighed the cost of hand production.

But in the end the round wire nail became the universal standard and still is today. It represents a technology that is still in use and virtually unchanged for more than 100 years; quite a rarity at the beginning of the 21st century.

Even if the nail itself is missing in a piece of furniture, you can sometimes determine its origin by the hole it leaves. Handmade nails leave square holes, cut nails leave rectangular holes and wire nails leave round holes.

Each type of nail leaves its signature hole.

Each type of nail leaves its signature hole.

Fred Taylor is a Worthologist who specializes in American furniture from the Late Classicism period (1830-1850).

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  • Leo McMahon

    Great information. Discovered a machine cut nail with angled side and rectangual hole on our property in North Fork California on what was the old Teaford Meadow Ranch property while using our Metal Dectector. Five inches under the ground. Nail of about 4 inches long. At first thought it was an old shoeing nail, but was too big and long. Thanks for your “Site” Now we know we have a bit of old history on our property. Definitly looking for more.

  • Ira J. Silberman

    I am seeking information on the value of a large nail believe to have come from a building constructed in the 15th century. The building and location can be verified.

  • Josh

    What a nice article. I knew nothing about nails and and this was such a clear, well-written and well-illustrated introduction. Thank you, Mr. Taylor.

  • Colleen

    I have a piece with the rectangular holes from nails which I knew were old, but now I know this helps confirm that the piece was from approx. 1830. This type of information is very helpful, and I can learn how they determine age and value of a piece. I just knew it was old and worth more than I paid for it, even after the appraiser confirmed it for me. It’s great to have specifics with the piece.

  • Would you be will to speculate to the age of the nails on the flyer of a recently acquired spinning wheel. If you go to

    you’ll see the nails on the flyer of my Mystery Wheel. After reading Edwads and Wells and your article, I’m still at a loss. I’m thinking Victorian but could they be older. I did note a notched head nail on the wheel. Please go to hp:// and check outmy Mystery Wheel and Nail articles and tell me what you think.Thanks
    Tropical Twister

  • Sadie

    Loved this article! So well written! I learned so much and you made it so easy to understand. Can’t wait to check out my antique furniture to discover what kind of nails were used in the construction to help me in identifying my pieces. I look forward to reading more of what you write. Thank again for sharing your knowledge.
    P.S. Also went to your website. Wow, you have a lot of information there! Plan to order your book and the rest of what you offer.

  • colin barr.

    Hello can some one help me. I am looking for one Victorian authentic NAIL. We are having an Victorian Exhibition at the local Library which has been set up by the Primary School. The one we had has been stolen. Hope some one can help. Colin.

  • This is an excellent article and resource. Thank you.

  • Mary Jane

    Mr. Taylor, thank you so much for sharing so much information with me. I learned so much about nails in one article. I never thought it would be possible and thought I would have to read a complete book to learn this much. I have forwarded your article on to my co-workers and we have all enjoyed the valuable information that you provide and look forward to examining all the furniture in our antique mall. We will keep our eyes open for more articles by you. You are a great teacher. Do you ever come to malls to teach classes about antique furniture?

  • Buddy Smith

    Fred, I have been a collector of old nails for most of my adult life. You gave me the information I have been searching for to know how to identify the age of my furniture nails. Thanks for the concise, well written information. I look forward to seeing what else you publish.

    Thanks again,
    Buddy Smith

    • ellie

      I have several square nails from a home built in 1864
      Is there a market for these??? Should I look for more???

  • James Cook

    Mr. Taylor, thank you for this very helpful and informative piece of work. You have a wonderful way of explaining things and I have really enjoyed reading what you write.
    James Cook

  • Martin Green

    I have an old Amati violin with (2) small trim nail heads visible, I’m sure for repairs.
    The heads are diamond shaped. Any idea when this type head was prevalent?

  • Barbara Joseph

    I found an old RoseHead nail, 10 inches in langth out in horse pasture.Can you tell me what such a long nail was used for

  • ruth franklinn

    i have a handmade fireplace bellow made in the 17th century because of the rose head sharp point nails. the leather is all hard, brittle and cracked and a lot of it is gone.

    ruth franklin
    p.s. i would appreciate a response

  • Barb Becerra

    Great article.
    I found an old rusty nail in my yard the has a head on both ends. I live in farming country.
    What was that used for?

  • I found a 6 inch round nail in a basement hedderboard in an 1890’s house. the rest of the house was built with square nails, Why?

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