Rivets

PENCOM offers blind rivets for fast, one-side fastening in sheet metal and general assembly—ideal when you can’t access the backside of the joint. Start by selecting the rivet family that matches your functional needs (sealing, vibration resistance, grip tolerance, or fragile materials), then choose the head style (dome, large dome, or countersunk) and the grip range that matches total material thickness for a secure set.

Open rivets (general-purpose blind rivets)

The standard choice for quick assembly across brackets, trays, covers, panels, and housings. PENCOM’s open dome rivets are positioned for general-purpose sheet assemblies where a slightly raised head is acceptable, and the open rivet datasets show broad coverage across inch and metric diameters and multiple alloy/finish families.
Choose open dome (ROA) when you want a clean rounded head and straightforward installation; choose open large dome/large flange (ROB) when you need more bearing area on the surface to reduce pull-through risk in thin or softer materials.

Closed-end rivets (sealed blind rivets)

Designed for assemblies that must resist liquid or vapor migration through the rivet body—commonly used in enclosures and dynamic applications where rattle reduction and mandrel retention matter. PENCOM positions closed-end rivets as the option that seals the blind side, and closed-end designs are widely characterized as providing a water-resistant seal and full mandrel retention when installed correctly.
Select RCA for a sealed dome-head appearance, RCB for a sealed large-head option when surface bearing is a priority, or RCC when you need a flush countersunk surface with sealing.

Multilock rivets (locked, wide-grip / multigrip blind rivets)

The best fit when you need wide grip-range coverage, vibration resistance, and performance in oversized or irregular holes. PENCOM highlights Multilock as a locked design for vibration-prone assemblies and mixed materials, with multigrip behavior that can reduce inventory by replacing several standard rivet sizes.
Use RMA for dome-head Multilock joints, RMB when you need more bearing area (large dome), RMC for flush countersunk assemblies, and choose the 120° countersunk variants (RMC2) where drawings specify a 120° countersink.
If you’re joining thinner panels or softer sheets and still need a locked multigrip fastener with a larger bearing surface, RMXL adds extra-large dome coverage in the Multilock family.

TriHold rivets (tri-fold for soft/brittle materials)

Engineered to reduce substrate damage while improving pull-through resistance. PENCOM’s TriHold description emphasizes three wide legs on the blind side and load spreading for plastics, composites, and thin sheets—helpful where standard rivets risk cracking or distortion.

BulbLock rivets (watertight folding / multi-leg expansion)

The specialized choice for assemblies exposed to water intrusion and movement/vibration, especially in thin materials where a larger blind-side bulb improves pull-through resistance. PENCOM positions BulbLock RBA as a watertight blind rivet with folding/multi-leg backside expansion and as well-suited to outdoor, washdown, and exposed assemblies and closed sections like tubes.