Multilock Rivets

Multilock rivets are a smart choice when you need a high-performance blind rivet that can handle varying material thicknesses, imperfect hole conditions, and applications where vibration resistance matters. Often selected as a multi-grip blind rivet solution, Multilock rivets help reduce part count by covering a wider grip range than standard blind rivets, which can simplify sourcing, inventory, and assembly planning.

PENCOM’s Multilock rivets are designed for customers who need dependable fastening in thin sheet metal, plastics, composites, and mixed-material assemblies. The expanding mandrel design helps create strong, consistent joints, even when holes are slightly oversized, irregular, or less than perfect. That makes these rivets a practical fit for panels, enclosures, transportation assemblies, machinery, HVAC equipment, and other production environments where repeatable installation and secure clamp performance are important.

This category includes several head-style options so you can match the rivet to the application. RMA Multilock Dome Rivets are a versatile general-purpose option for strong fastening with a familiar rounded head profile. RMB Multilock Large Dome Rivets increase bearing surface to improve load distribution and help reduce pull-through risk on softer or thinner materials. RMC Multilock Countersunk Rivets are suited for assemblies that need a lower-profile, more flush finish. RMC2 Multilock 120 Degree Countersunk Rivets are a strong option when your design calls for a 120° countersunk profile. RMXL Multilock Extra Large Dome Rivets are ideal where an even broader bearing area is preferred for thin, soft, layered, or more delicate materials.

One of the biggest advantages of Multilock rivets is their ability to support a wide grip range. In many applications, one multigrip rivet can replace multiple standard rivet lengths, which helps reduce SKU count and makes line-side inventory easier to manage. The locked-joint design also supports vibration-resistant fastening, which is why multilock blind rivets are often considered for assemblies exposed to motion, repeated loading, or general service wear.

For engineers and buyers, head style selection matters just as much as grip range. Dome head styles are often chosen for general fastening and visible finished surfaces. Large dome and extra-large dome options are useful when more bearing area is needed to spread clamp load and support softer materials. Countersunk and 120° countersunk designs are used when the application needs a smoother exterior or tighter clearance around the fastened joint.

When choosing the right Multilock rivet, start with the total material thickness, hole condition, required head style, and material compatibility. From there, match the rivet to the environment, appearance requirements, and load needs of the assembly. PENCOM supports these fastening requirements with a broader rivet offering, manufacturing support, and installation tooling for production use.

If your project needs a multi-grip blind rivet that offers flexibility, strong backside formation, and reliable performance in demanding assemblies, PENCOM’s Multilock rivets provide a practical solution across a wide range of industrial fastening applications.