Rivetking 18N37RC8AP/1100 Countersunk Aluminum Solid Rivet

Product Description

The RIVETKING 18N37RC8AP/1100 is a countersunk aluminum solid rivet designed for permanent fastening applications across a wide range of trade and industrial uses. The rivet features a 3/16 inch body diameter and a 3/8 inch length under head, with a 78-degree countersunk head angle that sits flush with the mating surface when properly set. Manufactured from Grade 1100 aluminum, it delivers reliable shear strength in lightweight assemblies. This is a single-piece, solid-body rivet - not a blind or pop rivet - and must be driven or bucked using a rivet set and bucking bar. Suitable for sheet metal, ductwork, and structural panel work where a flush head profile is required.

This countersunk solid rivet is used in applications where the fastener head must sit flush with or below the surface of the workpiece. Common install scenarios include sheet metal fabrication, HVAC ductwork assemblies, electrical enclosures, and general metal panel joining. The 78-degree head angle is a standard countersink profile compatible with pre-drilled countersunk holes in aluminum, steel, and composite panels. The Grade 1100 aluminum construction keeps weight low and resists corrosion in typical indoor and light outdoor environments.

Key Features

• 3/16 inch body diameter for standard countersunk rivet holes
• 3/8 inch length under head for typical single or double sheet thickness
• 78-degree countersunk head angle provides flush surface finish
• Grade 1100 aluminum construction - lightweight and corrosion resistant
• Solid rivet body requires bucking bar or rivet gun for installation
• Does not meet military specifications - intended for commercial applications

Compatibility

Designed as an OEM-style replacement or direct-fit solid rivet for commercial sheet metal and panel fabrication applications requiring a 3/16 inch countersunk aluminum rivet with a 78-degree head angle.

Installation Notes

Solid rivets must be installed by a qualified sheet metal technician or fabricator using a properly sized rivet set, hammer, or pneumatic rivet gun along with a bucking bar on the tail end. Always match the countersink angle of the pre-drilled hole to the rivet head angle before driving to avoid deformation of the head or workpiece. Ensure all panels are clamped and aligned before setting rivets, as solid rivets are not removable without drilling out. Follow applicable sheet metal fabrication codes and shop safety procedures when operating pneumatic tooling.