Double Cap Rivets for Leather Handbags, 8mm | DG-RV008

Quick Answer

What are double cap rivets for leather? They are two-piece tubular fasteners made of a hollow post and a domed cap, set through a punched hole so the strap shows a clean, rounded head on both faces. This DG-RV008 brass set pairs an 8.2mm cap with a post piece that stands 10.5mm high and weighs just 0.55g per set. It suits leather and fabric bag straps, tags and zipper pull tabs, and is supplied in light gold, rose gold, silver and rainbow plating with OEM options. Buyers choose it when a strap needs a neat finish on both faces, a small visual footprint and an installation method that works with a standard rivet setter and a hand press.

Key Takeaways

• Double cap rivets show a finished cap on both sides, so they suit parts where the front and back are both visible.
• The 8mm double cap rivets size works best on fine straps, tags and zipper pull tabs, not on thick load-bearing joints.
• Post height must match the stacked material thickness, otherwise the cap sits loose or the post bottoms out.
• Brass is the base metal here, so the hollow post rolls cleanly and holds plating well on both the cap and the post.
• Plating color consistency across batches matters more than the first sample, especially for rose gold and rainbow finishes.
• Free stock samples are available, and custom sample fees are fully deductible from bulk orders.
• MOQ is 1000 pcs (negotiable based on order details), with production and delivery each at 10–15 days.

Two-Piece Structure: How Double Cap Rivets for Leather Actually Work

Many buyers first meet these fasteners as a small bag in a craft shop, so it helps to describe what they are from an engineering view. A set contains two parts. The first is a base cap with a hollow post rising from its center. The second is a smooth, domed cap that presses onto the post. Because both parts are formed rather than cast as one lump, the set is light and the cap faces can be polished to a mirror surface.

People search for the same part under many names. You will see double cap rivets, double sided rivets, double headed rivets, double ended rivets, two sided rivet and cap rivets, and on spec sheets a double cap tubular rivets or dual head two piece rivets description. A two piece cap rivets listing usually points to the same structure. When customers compare suppliers, we suggest they confirm the cap diameter and the post height rather than relying on the product name.

In our factory, the hollow post is the part that gets the most attention during prototype development. The post wall has to be thin enough to roll or press over the cap, yet firm enough to keep its round shape when it passes through leather.

Quick Knowledge for Buyers New to Cap Rivets

What is the difference between a tubular rivet and a solid rivet?

A solid rivet is a full shaft that must be hammered flat on the far side. A tubular design has a hole in the post, so less force is needed to roll the end over. That is why a hollow post is common on soft, thin materials such as leather and fabric. NASA’s fastener design manual describes compression tubular rivets as two parts joined by an interference fit, which is the same principle used in handbag hardware.

Why does a rivet need two visible faces?

On a strap, a tag or a belt, the back is often seen as clearly as the front. A single-cap style leaves a flat or rough tail on the reverse. A matched pair of domed caps looks finished from either angle, which is why designers specify this style for reversible or unlined pieces.

Double cap rivets vs other fasteners

Why Brass Matters: Material and Plating Under the Shine

Our brass double cap rivets are stamped and deep drawn from brass strip, and the plating is applied on top of that polished brass surface. Brass is soft enough to roll or press cleanly around a hollow post, resists rust at the core, and accepts plating well, which is why it is the usual choice for visible bag hardware. The table below shows how brass compares with the other metals buyers sometimes ask about.

Instead of simply saying a finish is good, we describe how it is built. The caps go through several polishing stages before Electroplating, which helps give a consistent finish across the dome and the edge. Light gold and rose gold look flatter when the base polish is weak, and rainbow plating shows every scratch underneath. That is why we judge a batch under daylight and not only under shop lighting.

Sizing Guide: Double Cap Rivet Sizes and Small Double Cap Rivets

Most buyers searching for double cap rivet sizes want one answer: which one fits my strap? The cap diameter controls the look, and the post height controls the grip. For fine bag straps, key fob tabs and zipper pull tabs, small double cap rivets in the 6mm to 9mm cap range are the usual starting point.

This set uses an 8.2mm cap, so it fits the common 8mm double cap rivets request from buyers while leaving room for plating thickness.

How to choose double cap rivet post length

The simple rule is to measure the stacked thickness of all layers, including any lining, glue line and reinforcement, then pick a post that leaves a little room for the cap to seat. Too short, and the cap will not close. Too long, and the post folds sideways or the cap rocks. When customers send us a leather swatch, we test three post heights on the same material before they commit.

Applications: Where Leather and Fabric Bags Use These Rivets

The set is built for double cap rivets for leather straps, wallet tabs, card holders and belt keepers, and it also works as double cap rivets for fabric on canvas totes, nylon backpacks and cotton webbing. A double sided rivets listing often appears on craft marketplaces, but brands need the same item for production runs.

Here is a scenario we see often. A small European label develops a leather crossbody bag with a thin shoulder strap. The sample uses sewn stitching at the strap ends, which looks bulky and frays after a few weeks of wear. The designer asks us for an 8mm double cap rivets option in rose gold to match the existing zinc logo plate.

In the first round, the post is slightly too long for the folded strap, so the cap rocks. We reduce the post height by a small step, test again on their actual leather, and approve the second sample. After that, the brand reuses the same part on tags and zipper pull tabs, so one rivet serves three positions. If you have a real project like this, the same process applies.

Reading the Technical Drawing: Why Each Dimension Matters

• Cap diameter 8.2mm: This sets the visual size on the strap and the minimum strap width. It also decides which rivet setter die you need.
• Post piece overall height 10.5mm: This is the full height of the base-and-post piece. It limits the stack of leather it can grip, so measure your layers before choosing it.
• Post hole: The hollow center lets the post roll or compress under the cap with moderate force, which protects soft leather from crushing.
• Cap dome curvature: A gentle dome catches light evenly and avoids sharp edges that snag clothing or scratch the inner lining.
• Weight 0.55g per set: Low weight keeps thin straps from sagging and makes large quantities easier to ship.
• Plating thickness: It cannot be seen on a drawing but affects fit. Thick plating on a tight post can stop the cap from seating.

Inside the Factory: A Cloud Tour of How the Set Is Made

If you were walking through our workshop with us, this is the route one rivet set takes.

1. Raw material strip: We check the strip thickness first, because a slightly thicker strip changes how the post draws and how the cap seats.
2. Stamping and deep drawing: The cap and the hollow post are formed in progressive dies. Deep drawing in several steps prevents cracks at the post wall.
3. Trimming and tumbling: Burrs on the cap edge are removed so the rivet will not scratch leather or fingers.
4. Polishing: Several polishing stages come before plating, because plating copies whatever surface is underneath.
5. Electroplating: Small parts are plated in barrels or on racks depending on color. Rainbow and rose gold need tighter control of time and temperature.
6. Salt Spray Testing: Sample sets are tested for corrosion resistance. For background, see the salt spray test method and its standards, which is a comparison tool rather than a prediction of service life.
7. QC Inspection: Caps and posts are checked for color match, fit and surface marks. We test fit by pressing sample sets, not by eye.
8. Packing: Sets are packed with Pearl Foam, an OPP Bag and an Export Carton, or customized packaging on request.

Factory Expert Tips for Setting Double Cap Rivets

• Match the die to the cap. A mismatched die dents the dome. Always use a rivet setter and anvil made for the cap size you buy.
• Test on scrap first. When setting double cap rivets for the first time, practice on the same leather or fabric scraps, with the same lining.
• Punch clean holes. A hole slightly larger than the post diameter lets it pass without twisting. Ragged holes cause the cap to tilt.
• Control the strike. Two light taps usually beat one heavy blow, which can flatten the post or mark the plating.
• Keep finishes together. Order the cap and post for one project from the same plating lot to avoid visible color steps.

Common Buying Mistakes with Cap Rivets

• Assuming every rivet set uses the same base metal, then finding a rust spot where the plating wore through on a cheaper steel core.
• Choosing cap rivets by color photo alone, without asking for a physical sample under daylight.
• Ignoring post height and buying by cap diameter only.
• Mixing plating lots across reorders, which shows as a slight color shift on the same bag.
• Skipping the setter test and discovering at the sewing line that the die does not fit.
• Comparing price per piece without checking whether sets include both cap and post.

Buyer Decision Guide: Who Should Order This Rivet

• Fashion and small leather brands: a good fit when you need matching hardware for straps, tags and pull tabs.
• Luxury handbag designers: suitable for internal or secondary positions. For main load points, ask us about sturdier alternatives.
• OEM factories: suitable when you need stable supply and color matching across seasons.
• Small MOQ brands: reasonable, but MOQ starts at 1000 pcs (negotiable based on order details), so check whether one color or a mixed-color order suits you.
• Not suitable for: joining sheet metal, or heavy bag handles carrying real loads. Choose a screw-based or heavier connector there.

Buyers sometimes type rivet double cap or leather rivets double cap into search engines, and these searches usually come from product developers comparing specs. If that is you, send your strap thickness and target cap size, and we will recommend a post height.

OEM Customization and Custom Double Cap Rivets Manufacturer Support

If you are looking for a custom double cap rivets manufacturer, here is what we can adjust on a project basis.

• Custom Mold: new cap diameters or special dome shapes need dedicated tooling.
• Laser Logo: a small mark can be engraved on the cap face. Artwork must be simple for an 8.2mm surface.
• Emboss Logo and Deboss Logo: possible with a stamped cap, subject to a mold fee and a trial.
• Oil Filling: not common on such a small part, but possible for a recessed mark.
• Electroplating colors: color matching to your Pantone or to an existing hardware sample.
• Private Label, Barcode, Hang Tag and Retail Box: packaging details for brands selling rivets as a kit.

For double cap rivets wholesale orders, we usually start from a stock design, then adjust color or post height before moving into custom tooling.

Care and Storage of Plated Rivets

Plated small parts react to their environment, so storage matters. Humidity and sweat can tarnish plating, and acidic cleaners can strip a thin finish. If the plating is worn through, the brass underneath will slowly darken rather than rust, which is easier to live with but still visible. Keep sets in sealed OPP bags in a dry carton. On finished bags, wipe with a soft dry cloth, and avoid hand sanitizer, which can dull polished caps.

Frequently Asked Questions

What is the lead time for double cap rivets?

Production time is 10–15 days and delivery time is 10–15 days. A custom sample usually takes 5–7 days, because a new mold or plating color needs to be prepared. Stock samples can often leave within 1–3 days. If you have a launch date, tell us at the start so we can plan around plating schedules, packing and the shipping method you prefer.

What is the MOQ?

The MOQ is 1000 pcs (negotiable based on order details). If you want several finishes, mention the quantity per color. We can discuss mixed finishes, but each plating batch needs a practical quantity to stay consistent. Tell us your annual plan, target colors and launch date, and we can suggest a sensible split between colors and reorders.

Do you charge for tooling?

Stock designs need no new tooling, so you can start with the existing 8.2mm cap and change only the plating color. A new cap shape, a special dome or an embossed logo needs a new mold, and the cost depends on the part and its complexity. We confirm the tooling cost in writing before starting any work, so there are no surprises later in the project.

Can you make this rivet to my own design?

Yes. OEM and ODM development is supported. Send a drawing, a physical sample or even a clear photo with dimensions, and we will review cap diameter, post height, finish and the material you plan to rivet. We then build a sample for approval and fit-test it on your leather or fabric before any bulk order starts.

Are free samples available?

Free stock samples are available. Custom samples require a sampling fee, and custom sample fees are fully deductible from bulk orders. Courier charges are borne by the customer. This lets you check fit, dome shape and plating color on your own leather or fabric, and test your rivet setter, before committing to a bulk quantity.

Do you provide certifications?

We maintain quality certification documentation and are happy to provide the current valid certificates upon request during your sourcing evaluation. Tell us your target market and any restricted-substance requirements your brand follows, and we will check what documentation we can supply for this product category before you place an order.

How consistent is the plating across batches?

We polish before plating, control plating time and compare each lot against an approved master sample. Rainbow and rose gold are the most sensitive, so for those colors we recommend agreeing a tolerance sample in writing. Ordering the full quantity in one run also reduces any difference between lots, and we keep the approved sample for later reorders.

What packaging do you use?

Standard packaging is Pearl Foam + OPP Bag + Export Carton, which protects polished caps from scratching during sea or air transport. If you need retail bags, kits or labels, Customized Packaging is available, and we can print a barcode or add a hang tag on request. Send your packing requirements together with the quotation request.

Why Choose DG Buddy for Bag Rivets

DG Buddy brings nearly 20 years of manufacturing experience in bag hardware. In practice this means engineers who can read your drawing, a sampling team that returns prototypes in 5–7 days for custom work, a QC Inspection step before packing, and sales staff who answer questions about post height or plating without sending you around in circles.

Related Categories

• Bag Accessories & Components
• Bag Strap and Chain Hardware

Related Products

• Custom Zinc Alloy Metal O Rings – 38mm Gold O Ring Hardware
• Swivel Snap Hook for Bags

Read our bag hardware sourcing guide or download the catalog for more sizes and finishes.

Request a Quote or Sample

If you already have a strap thickness or a technical drawing, send it over and we will suggest a post height and a finish. If you are still evaluating suppliers, ask for free stock samples first and test them on your own leather. We are happy to review your target cap size, finish and quantity, and reply with a clear quotation.