Marson M40121 Open End Blind Rivet Button Head Steel 500pk

Product Description

The MARSON M40121 is an open end blind rivet with a button head profile, steel body, and steel mandrel. Designed for single-side fastening applications, it sets a broad, low-profile head on the accessible face while the mandrel stem locks the body from the blind side. With a body diameter of 0.129 to 0.125 inches and a grip range of 0.313 to 0.375 inches, this rivet is suited for joining sheet metal, brackets, enclosures, and light structural components where access is limited to one side. It ships in a package quantity of 500 units, making it practical for production use or stocking a service van.

This rivet is used across a wide range of trade applications including HVAC equipment assembly, electrical enclosure fabrication, ductwork attachment, and general sheet metal work. The button head style provides a finished, rounded appearance on the visible face and distributes clamping load over a 0.25-inch head diameter. It is appropriate for both shop fabrication and field installation tasks where a drill-and-rivet workflow is standard practice.

Key Features

• Open end design allows blind-side installation with standard rivet tools
• Button head profile with 0.25-inch head diameter for low-profile, finished appearance
• Body diameter of 0.129 to 0.125 inches fits standard rivet hole sizing
• Grip range of 0.313 to 0.375 inches accommodates varying material stack thicknesses
• All-steel body and mandrel for strength in mechanical and sheet metal assemblies
• 500-unit package quantity supports production runs and field stocking

Compatibility

Designed as an OEM-style blind rivet for use with standard manual, pneumatic, or battery-powered rivet tools that accept the appropriate nose piece for this body diameter.

Installation Notes

Blind rivets in this size range are typically installed by sheet metal workers, HVAC technicians, and electricians using a hand rivet tool or pneumatic riveter. Drill the correct hole diameter to match the rivet body before installation and confirm material stack thickness falls within the stated grip range. Wear eye protection during setting, as the spent mandrel stem is ejected at pull-through. Always verify that the combined material thickness does not exceed the grip range before selecting this rivet for a joint.