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Large Flange Pop Rivets

Blind rivets with an enlarged flange for wide bearing surface and load distribution on thin or soft panels

Large flange pop rivets are manufactured by Zhejiang Chance & Union Import and Export Co., Ltd. for blind-side fastening where access is limited to one side of the workpiece. The enlarged flange increases the bearing area on the parent material, distributing clamp load across a wider surface and reducing the risk of pull-through on thin sheets, plastics, and composite panels. These rivets consist of a hollow body and a mandrel. During installation, the mandrel is pulled into the body, expanding the blind side and forming a secondary flange. The mandrel breaks at a predetermined load and remains captured in the body. Production processes include cold heading, wire drawing, and surface finishing. The product line covers open-end and closed-end types in aluminum, steel, and stainless steel.

Core Advantages

01

Wide Bearing Surface

The enlarged flange spreads clamp load over a larger area, reducing deformation and pull-through on thin or low-strength materials.

02

One-Side Installation

Blind rivet design allows fastening when only one side of the assembly is accessible, supporting enclosed frames and tubular structures.

03

Material Combinations

Body and mandrel materials are matched to the application, including aluminum body with steel mandrel and stainless steel body with stainless steel mandrel.

04

Production Capacity

Automated cold heading and assembly lines support high-volume orders with a 9,500-ton annual production capacity.

05

Quality System

ISO9001 and IATF16949 certified processes with digital traceability from raw material to final inspection.

06

Customization Support

Flange diameter, body length, and mandrel specifications are produced according to customer drawings and application requirements.

Product Characteristics

Structure
Hollow body with mandrel, open-end or closed-end configuration
Flange Type
Large flange dome head and large flange countersunk head
Body Materials
Aluminum, carbon steel, 304 stainless steel, 316 stainless steel
Mandrel Materials
Carbon steel, stainless steel, aluminum
Diameter Range
Metric and imperial sizes from 3.2 mm to 6.4 mm and equivalents
Grip Range
Defined per body length to cover single and multi-layer panel thickness
Surface Treatment
Plain, zinc plating, anodized, passivation, painted according to specification
Traceability
Digital batch records and material certificates available for each shipment

Application Areas

Automotive Interiors

Door panels, trim, and interior structural brackets where the rear side is not accessible.

Appliances and HVAC

Sheet metal housings, ducts, and frames where soft or thin panels require wider load distribution.

Electrical Enclosures

Control boxes, cabinets, and panels assembled from painted or coated sheet metal.

Transport and Trailers

Body panels, linings, and access covers on trucks, trailers, and rail interiors.

Furniture and Shelving

Metal frames, brackets, and modular shelving where visible fastener footprint is controlled.

Renewable Energy Mounts

Solar panel frames and mounting rails where thin aluminum profiles require a large bearing flange.

Usage Notes

Hole diameter and grip range must match the rivet specification. An oversized hole reduces clamp load and may allow the body to shift during installation.

Total material thickness should fall within the stated grip range. Exceeding the grip range may cause incomplete setting or mandrel break outside the body.

Mandrel retention differs between open-end and closed-end types. Closed-end rivets are used where a sealed or moisture-resistant joint is required.

Dissimilar materials in the joint should be checked for galvanic corrosion risk. Material combinations and coatings are selected accordingly.

Installation tools must match the rivet diameter and material. Incorrect tooling can deform the flange or damage the mandrel head.

Frequently Asked Questions

What overall services can you provide for clients?

We provide global customers with one-stop fastener solutions covering the whole process from product R&D and sampling to mass production.

Do you offer non-standard customization service for fasteners?

Yes, we do. Supported by strong R&D and production capacity, we can customize special-shaped and non-standard fasteners with exclusive specifications according to customer drawings, parameters and application requirements.

Which countries and regions do your products export to? How many cooperative clients do you have?

Our products are exported to more than 25 countries worldwide, and we have served over 200 clients at home and abroad with extensive market coverage.

What production processes are applied to your products?

We adopt mature mainstream processes such as cold heading, hot forging and precision machining to guarantee product accuracy and structural strength.

What main fastener products do you supply?

We mainly deal in high-strength bolts, nuts, washers, pins and screws, and also provide all kinds of non-standard customized fasteners.

Company Profile
Fastening Chances, Strengthening Union
Zhejiang Chance & Union Import and Export Co., Ltd.
Zhejiang Chance & Union Import and Export Co., Ltd. (abbreviated as Chance & Union) is a family-owned China Large Flange Pop Rivets company under SEA Monies Metal Co., Ltd., inheriting 20 years of family experience and quality heritage in metal manufacturing. Relying on Shengzhao Metal's strong production capacity and supply chain advantages, we specialize in the R&D, production and global sales of high-quality metal products. Adhering to the family's pursuit of precision, rigorous working attitude and long-term commitment, we deliver stable and reliable products and services to customers across the globe.

Leveraging the factory's robust R&D and production capabilities, we specialize in high-strength rivets bolts, nuts, washers, pins, screws, and various non-standard custom parts. As experienced Custom Large Flange Pop Rivets Suppliers, we provide flexible manufacturing solutions for different customer requirements. Our product range covers materials including stainless steel, alloy steel, aluminum alloy, copper, and special alloys, utilizing processes such as cold heading, hot forging, and CNC machining. Our products are exported to over 25 countries, serving more than 200 clients.

Chance & Union is committed to seamlessly connecting "Manufactured in China" with the international market, providing global customers with one-stop fastening solutions from R&D to mass production through professional technology and exceptional quality.