Products Description
Pre-Drill-Free Blind Rivet is an engineered solution that integrates drilling and riveting functions into a single fastener. Designed for single-sided operations, this product utilizes a drill tip integrated into the rivet's tip to complete drilling and riveting in a single process during installation, eliminating the need for pre-drilling.
For thin-walled metal connections in applications such as new energy battery pack housings, power electronic cabinets, and relay and contactor assemblies, this product offers an engineering-logic-supported technical option. Compared to the traditional two-step process of pre-drilling and riveting, Break Mandrel Self-Drilling Rivet reduces the risk of accumulated hole position deviations by merging these processes, while also reducing the need for on-site drilling equipment.
Product Details and Features
Multi-level Flange Step Structure
The multi-stage flange step structure of the Sheet Metal Self-Drilling Blind Rivet evenly distributes axial clamping force, preventing thin sheet metal from denting and deforming under pressure, and is suitable for assembling thin metal electrical control panels.
01
Precision-formed Drill Tip
The precision-formed drill tip edge of the Drill Tip Blind Rivet ensures uniform penetration of metal sheets, reducing assembly deformation, burrs, and residual stress, and minimizing rework in subsequent surface treatments.
02
Pre-set Broken Slot Mandrel
The Pilot Point Blind Rivet uses a pre-set broken slot mandrel with a precise break position design to avoid residual mandrel interference, ensuring a smooth finished surface that does not interfere with cabinet wiring, sealing, or shielding structures.
03
One-piece Molded Substrate
The Metal Panel Drill-Point Pop Rivet uses a one-piece molded substrate with no secondary welding seams, providing superior overall strength compared to split riveted structures and eliminating the risk of fatigue failure at joints.
04
Unified Surface Coating
Galvanized Self-Drilling Pop Rivet uses the entire surface, which is galvanized to achieve uniform corrosion protection and eliminate the risk of crevice corrosion.
05
Manufacturing Process
Raw materials undergo full-batch spectral composition testing upon arrival at the factory, eliminating substandard blanks. To meet the precision requirements of the Pilot Point Blind Rivet's tip forming, the uniformity of raw material composition is controlled from the source, thereby preventing chipping and insufficient hardness during subsequent drill tip forming due to variations in blank composition.
Multi-station cold heading in one piece, simultaneously completing the forming of the drill tip, multi-level shoulders, and rivet bodies: The entire structure of the Blind Self-Drilling Rivet is formed simultaneously in a single cold heading process, eliminating the need for secondary clamping and ensuring that the coaxiality tolerance of each structural section fully meets design requirements.
Localized Differentiated Heat Treatment: Ensuring drill tip hardness while preserving the rivet body's plastic deformation capability. Targeted heat treatment is applied to control the service characteristics of the Self-Drilling Pop Rivet, ensuring the drill tip's cutting penetration capability while preventing excessive rivet body hardness that could lead to brittle cracking during riveting.
Surface Zinc Plating and Passivation Treatment: Forming a complete anti-corrosion protective layer. A continuous and uniform passivation protective film is formed on the entire outer surface of the Drill-Point Blind Rivet, including the drill tip gap and shoulder step areas, with no uncoated dead zones, meeting the basic anti-corrosion requirements of power applications.
100% Go/No-Go Gauge Inspection and Sampling Mechanical Performance Testing: Eliminating dimensional and performance defects. The full inspection process encompasses all critical dimensions of the Self-Drilling Break-Stem Rivet. Sampling tests cover core performance indicators, including core breakage, tensile strength, and riveting load-bearing capacity, thereby preventing defective products from entering the downstream assembly process.
Industry Application Cases
| New Energy Battery Pack Housing Assembly | In the connection between the power battery module frame and the liquid cooling plate, multi-point fastening needs to be completed within a limited space. The Sheet Metal Self-Drilling Blind Rivet's single-sided working capability and self-drilling characteristics make it suitable for rapid assembly of enclosed cavity structures. Surface galvanizing meets salt spray test requirements, ensuring long-term corrosion resistance. |
| Power Electronics Cabinets and Control Boxes | The connection between the metal housing and internal structural components of equipment such as inverters, frequency converters, and distribution cabinets requires a balance between assembly efficiency and connection strength. The Galvanized Self-Drilling Pop Rivet's corrosion resistance and high clamping force output are suitable for the long-term reliable operation of power equipment in industrial environments. |
| Relay and Contactor Assemblies | In the metal connection between the relay base and terminals, the connection point must ensure anti-loosening performance under long-term vibration conditions. The Break Mandrel Self-Drilling Rivet's expansion locking mechanism provides continuous clamping force, reducing the risk of loosening. |
| Metal Panel and Composite Panel Connection | The Metal Panel Drill-Point Pop Rivet is suitable for on-site splicing and fixing of color steel plates, aluminum plates, and composite panels. Its drill-point design allows for penetration without pre-drilling, making it ideal for rapid assembly of large panels. |
contact us
If you are evaluating metal fastening solutions for new energy or power electronics projects, please send us your connection requirements (plate material and thickness, environmental conditions, mechanical requirements, and annual usage). Our engineering team will provide you with targeted specification recommendations and Pre-Drill-Free Blind Rivet sample support, assisting you in completing the entire technical process from design verification to bulk procurement.
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