{"id":3483,"date":"2026-09-23T11:58:35","date_gmt":"2026-09-23T03:58:35","guid":{"rendered":"http:\/\/www.lumbinilive.com\/blog\/?p=3483"},"modified":"2026-09-23T11:58:35","modified_gmt":"2026-09-23T03:58:35","slug":"what-is-the-difference-between-tubular-and-semi-tubular-rivets-440c-b8ab9e","status":"publish","type":"post","link":"http:\/\/www.lumbinilive.com\/blog\/2026\/09\/23\/what-is-the-difference-between-tubular-and-semi-tubular-rivets-440c-b8ab9e\/","title":{"rendered":"What is the difference between tubular and semi – tubular rivets?"},"content":{"rendered":"

If you\u2019ve ever spent time sourcing fasteners for automotive assembly, HVAC ducting, or recreational equipment manufacturing, odds are you\u2019ve encountered tubular and semi-tubular rivets\u2014but unless you\u2019re the kind of person who gets excited about the tiny details that hold the world together, you might not have stopped to ask what makes them different. As a rivets supplier with over 12 years on the floor, answering that question is the thing I do most often, and it\u2019s also the difference between a product that works for your application and one that fails before your first delivery. Let\u2019s break this down like I would over a cup of coffee with a new customer, no overly technical jargon that makes your eyes glaze over. Rivets<\/a><\/p>\n

<\/p>\n

First, let\u2019s start with the basics of what a rivet is, because even though it sounds simple, it\u2019s important to ground this. A rivet is a permanent fastener that has two ends: a smooth, cylindrical shank that goes through pre-drilled holes in two or more materials, and a head on one end that\u2019s already formed. The magic happens when you deform the other end (called the \u201cmanufactured head\u201d on one side, the \u201cshop head\u201d on the other) to clamp those materials tight. Now, tubular and semi-tubular are both hollow shank designs, which sets them apart from solid rivets\u2014but that\u2019s where the similarities end. The core difference comes down to how hollow they are, and that small detail changes everything for how you use them.<\/p>\n

Let\u2019s start with tubular rivets, because that\u2019s the workhorse for applications where weight is a top priority, and strength isn\u2019t worth the extra ounce. A tubular rivet\u2019s shank is completely hollow from one end all the way to the base of the manufactured head\u2014no solid core at all. The shank is a thin-walled tube, usually with a diameter between 1\/32 of an inch and 1\/4 inch, made from materials like aluminum, brass, steel, or even stainless steel for corrosion resistance. When you install a tubular rivet, you place it through your hole, then drive the shop end with a tool (usually a rivet gun, press, or even a hammer and a punch for smaller jobs) and the thin tube collapses outward. Because there\u2019s no internal solid material to compress, the hole expands as the rivet deforms, creating a tight, uniform fit that\u2019s perfect for thin, soft materials that can\u2019t handle much pressure.<\/p>\n

I see tubular rivets used every day in automotive trim, right? That plastic or vinyl headliner that\u2019s stapled or riveted to the roof? Those are tiny tubular rivets. Or the metal grilles on air conditioners\u2014you\u2019ve felt the sharp edges of a rivet popping out if you\u2019ve ever pulled an old unit apart. Tubular rivets are also go-to for electrical components, like securing terminal blocks or connecting wire housings, because their hollow shank doesn\u2019t conduct electricity the way a solid rivet would in some cases, and the collapse forms a smooth, secure joint without damaging delicate parts. Wait, but there\u2019s a catch with tubular rivets: because the shank is so thin, they can\u2019t handle high shear or tensile loads. If you use a tubular rivet on a load-bearing part, like a trailer hitch or a construction bracket, it\u2019s going to snap or pull out before long. I learned that early on, actually\u2014my first big mistake as a new supplier was selling a batch of tubular rivets to a small trailer manufacturer, and they came back to me two weeks later saying half the rivets holding the fenders on had fallen off. Turns out they were trying to use a low-cost tubular rivet for a part that needed more strength, and I didn\u2019t do my job explaining when it was the right fit. That\u2019s why I never skip the \u201chere\u2019s when you should and shouldn\u2019t use this\u201d part with a customer.<\/p>\n

Now, semi-tubular rivets. These look almost identical to tubular rivets at first glance, but if you hold them up to the light or run your finger along the shank, you\u2019ll notice a tiny difference: the hollow end only goes about one-third to one-half of the way into the shank, leaving a solid, tapered core at the tip. That small solid core changes almost everything. When you install a semi-tubular rivet, you drive the shop end, and that solid core acts like an anchor. Instead of the entire shank collapsing outward, the hollow part folds around the core, creating a stronger, more uniform shop head without expanding the hole as much. That makes semi-tubular rivets far more versatile for load-bearing applications, without the extra weight or cost of a solid rivet. They come in all the same materials as tubular, but you\u2019ll see them more often in carbon steel or alloy steel for things like scaffolding frames, agricultural equipment, and even furniture hinges.<\/p>\n

I\u2019ll be honest, semi-tubular rivets are my personal favorite because they solve so many of the middle-ground problems that most suppliers miss. For example, if you\u2019re working with a mix of thin sheet metal and a thicker plastic panel, a semi-tubular rivet will compress the materials evenly because the solid core keeps the installation force distributed, instead of punching a big hole in the plastic like a tubular rivet might. And because they leave a smaller, more defined shop head, they\u2019re perfect for applications where the back side of the joint is visible\u2014like cabinet hardware or decorative metalwork, where you don\u2019t want an uneven, ragged edge. I\u2019ve had a customer in the kitchen cabinet industry switch from solid rivets to semi-tubular about five years ago, and they told me their defect rate from loose hinges dropped by 70% because the semi-tubular rivets didn\u2019t pull out even when the cabinet doors were slammed thousands of times a week. That\u2019s the kind of win that makes the early mornings worth it.<\/p>\n

Now, let\u2019s get into the practical, real-world differences that matter most for your business, not just textbook definitions. First, installation tools. Tubular rivets require a tool that can apply enough force to fully collapse the thin hollow shank\u2014for small runs, a manual rivet gun works, but for high-volume production, you might use a air-powered riveter or a punch tool that\u2019s designed for tubular hardware. If you use a semi-tubular installation tool on a tubular rivet, you\u2019ll end up with a lopsided, weak shop head, or even crack the shank because the force is too concentrated. Conversely, if you use a tubular tool on a semi-tubular rivet, you won\u2019t compress the solid core properly, so the joint will be loose and weak. I always tell my customers to make sure they have the right tool for the rivet they\u2019re using\u2014you wouldn\u2019t use a Phillips head screwdriver on a flathead screw, and the same logic applies here.<\/p>\n

Next, material compatibility. Tubular rivets work best with soft, thin materials: plastic, vinyl, thin aluminum, fabric, or cardboard. If you try to use a tubular rivet on thick steel or hardwood, the shank will buckle or the hole will tear out. Semi-tubular rivets, with their solid core, can work on thicker, denser materials: steel up to 1\/4 inch thick, solid wood, fiberglass, and even some composite materials. I had a customer building custom kayaks a couple years back who was using tubular rivets to attach hatches, but they kept having hatches pop open during rough water. Switched to semi-tubular stainless steel rivets, and they haven\u2019t had a single return since. The solid core meant the rivet didn\u2019t pull through the thick plastic of the hatch, and the hollow part folded tightly around the shank to keep water out too\u2014bonus for a marine application.<\/p>\n

Weight is another big factor, especially for industries like aerospace or automotive, where every ounce adds up. Tubular rivets are lighter than semi-tubular, because their shank is almost entirely hollow. But the tradeoff is strength. A 1\/8 inch tubular aluminum rivet has a shear strength of around 150 pounds, while a 1\/8 inch semi-tubular aluminum rivet has a shear strength of around 250 pounds\u2014almost double, with only a tiny increase in weight. If you\u2019re building a racing bike, that small weight difference might matter, but if you\u2019re building a fleet of delivery vans, the strength difference is non-negotiable. I always ask customers to send me a quick spec of their load requirements before I recommend a rivet type, because guessing here leads to expensive rework later.<\/p>\n

Cost is also a practical consideration, and I wish more people talked about this. Tubular rivets are cheaper to manufacture, because they require less material and less precision in shaping the shank. That\u2019s why they\u2019re the go-to for low-cost, disposable applications, like fasteners for packaging or temporary displays. Semi-tubular rivets are a bit more expensive, because they require a secondary step to form that solid tapered core at the tip. But if you factor in the lifespan of the product and the cost of returns, semi-tubular rivets often end up being the cheaper option in the long run for load-bearing or long-life applications. I had a customer who tried to save 5 cents per rivet by using tubular instead of semi-tubular for their store display racks. Six months later, half the racks were wobbly, and they had to replace 200 racks at a cost of $50 each. That $500 in extra costs was way more than the 5 cents per rivet they saved\u2014so that\u2019s a story I tell every new customer who tries to cut corners on fasteners.<\/p>\n

Wait, one more thing that often trips people up: tolerance for hole size. Because tubular rivets collapse so much during installation, they can work with slightly oversized holes, which is a plus if your pre-drilling process isn\u2019t 100% precise. Semi-tubular rivets, with their solid core, need holes that are almost exactly the diameter of the shank\u2014usually within 0.005 inches, so you have to be accurate with your drilling. If your team is working with automated drilling equipment, that\u2019s not a big deal, but if you\u2019re doing manual drilling for small batch runs, tubular might be more forgiving. I mention that because I\u2019ve had small manufacturers come to me complaining that semi-tubular rivets keep leaking or coming loose, and it\u2019s never the rivet\u2014it\u2019s their drilling tolerance being too wide for the semi-tubular design.<\/p>\n

Now, let\u2019s tie this all together with what this means for you, as someone sourcing rivets for your business. If you\u2019re building a part that\u2019s thin, non-load-bearing, or requires minimal weight and cost, tubular is probably the right choice. Think: plastic packaging, electrical terminal covers, automotive interior trim, or temporary signage. If you\u2019re building something that needs to hold up to repeated stress, weight, or outdoor conditions, semi-tubular is the better bet: trailer frames, kitchen cabinet hardware, kayak hatches, agricultural equipment, or commercial scaffolding. And if you\u2019re not sure which one you need, that\u2019s why I\u2019m here. As a rivets supplier, I don\u2019t just sell what\u2019s cheapest or what\u2019s in stock\u2014I work with you to figure out the right fastener for your specific application, no upselling, no hidden fees, just honest advice.<\/p>\n

I\u2019ve been in this industry long enough to see trends come and go, but the need for the right rivet for the right job never changes. I still get the same questions I did 12 years ago: \u201cCan I use a tubular rivet on this?\u201d \u201cWhat\u2019s the difference between these two?\u201d And the answer is always rooted in the details I\u2019ve laid out here: hollow vs. semi-hollow shank, strength requirements, installation tools, material compatibility, and cost. No two applications are exactly the same, so no single rivet type works for everything.<\/p>\n

<\/p>\n

If you\u2019re working on a project right now and you\u2019re not sure whether tubular or semi-tubular rivets are the right fit, or you need a quote for bulk orders, reach out to my team. We can send you sample rivets to test, help you calculate load requirements, and make sure you get exactly what you need, when you need it, without the headache of ordering the wrong fastener and dealing with returns or delays. I\u2019ve built my business on helping customers avoid the mistakes I made early on, and that\u2019s the kind of supplier I always wanted to work with.<\/p>\n

Bolts<\/a> References:<\/p>\n

    \n
  1. Fastener Engineering Handbook, 5th Edition. Society of Manufacturing Engineers, 2018.<\/li>\n
  2. Rivet Design and Application Guide. American Society of Mechanical Engineers, 2020.<\/li>\n
  3. Material Compatibility for Permanent Fasteners. Industrial Fasteners Institute, 2019.<\/li>\n
  4. Automotive Assembly Fastener Standards. International Organization for Standardization, ISO 14589:2018.<\/li>\n<\/ol>\n
    \n

    Changzhou Unilee Fastening Technology Co., Ltd.<\/a>
    With abundant experience, we are one of the most professional rivets manufacturers and suppliers in China. Please feel free to buy premium rivets made in China here and get pricelist from our factory. All customized products are with high quality and competitive price.
    Address: Building 32, No.158, Jinchuang Road, Economic Development Zone, Changzhou City, Jiangsu Province
    E-mail: vitatree.cn@gmail.com
    WebSite:     https:\/\/www.unileefastener.com\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

    If you\u2019ve ever spent time sourcing fasteners for automotive assembly, HVAC ducting, or recreational equipment manufacturing, … What is the difference between tubular and semi – tubular rivets?<\/span>Read more<\/a><\/p>\n","protected":false},"author":476,"featured_media":3483,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[3446],"class_list":["post-3483","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-rivets-4e0b-b8ecf6"],"_links":{"self":[{"href":"http:\/\/www.lumbinilive.com\/blog\/wp-json\/wp\/v2\/posts\/3483","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.lumbinilive.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.lumbinilive.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.lumbinilive.com\/blog\/wp-json\/wp\/v2\/users\/476"}],"replies":[{"embeddable":true,"href":"http:\/\/www.lumbinilive.com\/blog\/wp-json\/wp\/v2\/comments?post=3483"}],"version-history":[{"count":0,"href":"http:\/\/www.lumbinilive.com\/blog\/wp-json\/wp\/v2\/posts\/3483\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.lumbinilive.com\/blog\/wp-json\/wp\/v2\/posts\/3483"}],"wp:attachment":[{"href":"http:\/\/www.lumbinilive.com\/blog\/wp-json\/wp\/v2\/media?parent=3483"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.lumbinilive.com\/blog\/wp-json\/wp\/v2\/categories?post=3483"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.lumbinilive.com\/blog\/wp-json\/wp\/v2\/tags?post=3483"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}