Chem-Set M4 No-Drill Bonding Fastener, M4.75 x 30 mm Round Base Stud

Description

The Chem-Set M4 Fastener is a round-base bonding stud that carries an M4.75 x 30 mm thread and adheres to the work surface with structural adhesive. The round base spreads bond area evenly around the stud, giving a fabricator a threaded anchor on metal, fiberglass, and composite panels without drilling or welding into the substrate.

Where the Chem-Set M4 Fastener Works

This round-base stud suits transportation bodies, marine hulls and lockers, signage, and equipment enclosures, mounting standoffs, brackets, cable trays, and light panels to surfaces that must stay watertight. The wider base footprint helps on curved or thin skins where a small pad might peel, distributing shear and pull-off load across more area. Because nothing pierces the panel, the finished joint keeps its coating and its corrosion barrier intact.

How the Chem-Set M4 Fastener Installs

Clean and abrade the target area, coat the round base with the recommended structural adhesive, and press it flat until the adhesive spreads to the edges. Once cured, run the mating hardware down the M4.75 x 30 mm stud and set it to the required torque. The 30 mm stud length clears thicker mating parts and spacers, and the bonded round base carries the load without a drilled hole, so the anchor stays put under vibration and repeated service.

Specifications

Order the stud with the matching adhesive so the round base and thread are ready to set together. Browse the full range of no-drill bonding fasteners to match base style and thread length to your build. For bonded-base surface prep and installation demonstrations, see the Chemical Concepts YouTube channel.

Need Help?

Need help spec’ing base size and stud length for your panel? Call (800) 220-1966 or email [email protected].