Rivetking 31C1IRLSZ/P25 Rivet Nut 5/16-18 Steel 25 Pack

Product Description

The RIVETKING 31C1IRLSZ/P25 is a standard rivet nut with a 5/16-18 thread, used to install load-bearing threaded fastener points in thin-wall materials where back-side access is not available. The nut features a round head profile and a zinc-plated steel body, offering corrosion resistance suitable for general-purpose mechanical and structural assembly. Grip range spans 0.03 to 0.125 inches, accommodating a range of material thicknesses in a single fastener. The drill size for installation is letter Z. This package contains 25 rivet nuts. Installers working in HVAC fabrication, electrical enclosure assembly, equipment framing, and light structural work commonly specify this fastener type.

Rivet nuts in this thread size and grip range are used across light commercial and residential trade applications where sheet metal, aluminum panels, or composite panels require a permanent threaded insert. Typical scenarios include installing threaded attachment points in ductwork flanges, electrical panel enclosures, equipment mounting brackets, and field-fabricated metal assemblies. The zinc plating makes these suitable for indoor and moderately exposed environments. A rivet nut tool or setting mandrel matched to 5/16-18 is required for proper installation.

Key Features

• 5/16-18 thread provides a strong, standard fastener point in thin materials
• Grip range of 0.03 to 0.125 inches handles a variety of material thicknesses
• Zinc-plated steel construction resists corrosion in general-duty applications
• Round head profile seats flush against the work surface for a clean installation
• Letter Z drill size required for proper hole preparation
• Sold in a 25-piece package for job-lot use

Compatibility

Designed as a standard OEM-style rivet nut for use in thin-wall steel, aluminum, and composite panel applications requiring a 5/16-18 threaded insert with a grip range of 0.03 to 0.125 inches.

Installation Notes

Installation requires a rivet nut setting tool or mandrel rated for 5/16-18 thread and a letter Z drill bit for hole preparation. Verify material thickness falls within the 0.03 to 0.125 inch grip range before setting the nut. De-energize any equipment and follow applicable OSHA lockout/tagout procedures before fastener work on live assemblies. Do not exceed the rated grip range, as improper setting can strip the mandrel thread or deform the nut body.