Rivetking 18N31RC8AP/1100 Countersunk Aluminum Solid Rivet

Product Description

The RIVETKING 18N31RC8AP/1100 is a countersunk head aluminum solid rivet designed for permanent mechanical fastening in light fabrication, sheet metal assembly, and general-purpose structural joining. This rivet features a 3/16 inch body diameter and a 5/16 inch length under the head, with a 78-degree countersunk head angle that sits flush with the material surface when properly set. Constructed from Grade 1100 aluminum, it delivers good corrosion resistance and formability in a wide range of assembly applications. Installers in HVAC, plumbing panel work, light structural fabrication, and general sheet metal trades commonly use solid rivets of this type where a permanent, non-removable fastener is required.

This rivet is suited for residential and light commercial fabrication work involving aluminum or thin ferrous sheet stock. The countersunk head profile is appropriate for applications where a flush surface finish is required, such as ductwork panels, equipment enclosures, brackets, and similar assemblies. The Grade 1100 aluminum alloy provides adequate ductility for cold-setting with standard rivet tools. This rivet does not meet military specifications and is intended for commercial and trade use only.

Key Features

• 3/16 inch body diameter for standard light-gauge fastening applications
• 5/16 inch length under head suits typical thin sheet stock assemblies
• 78-degree countersunk head angle provides a flush surface finish when set
• Grade 1100 aluminum construction offers corrosion resistance and ductility
• Solid rivet design creates a permanent, vibration-resistant mechanical joint

Compatibility

Designed as a commercial-grade countersunk aluminum solid rivet for general light fabrication and sheet metal assembly applications where a flush-head permanent fastener is required.

Installation Notes

Installation requires a standard rivet set and bucking bar or appropriate solid rivet driving equipment. Ensure all mating materials are properly clamped and aligned before driving to prevent joint distortion. Power down or de-energize any associated equipment before performing fastening work on electrical enclosures or panels. Follow applicable local codes and manufacturer guidance for fastener spacing and edge distance in structural assemblies.