Chem-Set F1 Female Bonding Stud, 5/16-18 Thread

Description

The Chem-Set F1 Female Bonding Stud is a 38mm round base bonding stud fastener with a 5/16-18 zinc plated steel thread, made for through-hole or blind-hole mounting where drilling and welding are not an option. It pairs with Chem-Set’s M1 male threaded posts to complete a bolted connection on a bonded surface.

Why shops choose a bonding stud fastener over drilling

Drilling and welding both carry setup cost and risk on a finished surface. A bonding stud fastener bonds flat to the substrate with structural adhesive, then accepts a standard bolt through the female thread, so the mounting point goes in without breaking through the material or introducing a heat affected zone. That matters most on thin panels, coated surfaces, or anywhere welding would be a safety hazard.

Where this bonding stud fastener is used

• 38mm round base for a wide adhesive bonding footprint
• 5/16-18 female thread, zinc plated steel
• Through-hole or blind-hole bolt applications
• Pairs with Chem-Set M1 male threaded posts
• Suited to metal, plastic, and composite substrates

Benefits over welded or drilled hardware

Because the stud bonds rather than penetrates, it distributes load evenly across the bond area instead of concentrating stress at a single drilled point, which helps the mounting hold up over repeated bolt cycles. Bonding also removes the galvanic corrosion risk that comes from mixing dissimilar metals at a welded or riveted joint, and it keeps the job off the welding schedule entirely, which shops appreciate when downtime on a bay is expensive.

Installation basics

Surface prep drives bond strength more than any other step. Clean and abrade the mounting surface, apply the specified structural adhesive to the stud base, and hold the fastener in position per the adhesive’s fixture time before putting any load on the joint. Full cure time depends on the adhesive selected for the application, not on the stud itself.

Chemical Concepts carries the Chem-Set F1 Female Bonding Stud as part of its bonding fasteners line. For installation and bonding technique demos, see the Chemical Concepts YouTube channel. For help matching a stud to the right adhesive, call (800) 220-1966 or email [email protected].