Specialinsert M1 Male Bonding Fastener, 38mm 1/4-20

Description

The Specialinsert M1 is a male bonding fastener on a 38mm round stainless steel base with a 1/4-20 threaded stud extending 1 inch, built to bond to a substrate and provide a mounting point without drilling. It pairs with a matching female receiver, or with a nut and washer directly, to complete a no-drill fastening system.

How this male bonding fastener completes a joint

Heavy duty stud-mount bonding fasteners like the M1 carry a threaded bolt on a flat baseplate rather than a mechanical anchor. The baseplate bonds to the substrate with adhesive, either during a molding process for embedded applications or after the fact for retrofit mounting, and the protruding stud becomes the attachment point for brackets, hardware, panels, or fixtures. Because the stud is male-threaded, it accepts a standard nut directly or threads into a matching female bonding fastener on the opposite surface for a two-sided bonded assembly.

Why shops choose a bonded stud over welding

Welding a stud in place risks heat distortion, weld spatter, and a refinishing pass on the surrounding surface, on top of the safety hazards that come with welding in some work areas. A bonded stud skips all three: it goes on with adhesive, cures without heat input, and leaves the surrounding surface untouched. That makes it a practical choice for retrofit mounting points on finished panels, dissimilar-metal assemblies where galvanic corrosion is a concern, and any job where welding access or safety requirements rule out a welded stud.

Specifications

• Type: Male threaded stud fastener (accepts nut or female receiver)
• Base: Round, 38mm diameter
• Stud length: 1 inch
• Thread size: 1/4-20
• Material: Stainless steel
• Installation: Adhesive-bonded, no drilling or welding required

Because the baseplate bonds across its full footprint rather than concentrating load at a single point, the joint distributes weight evenly and resists the kind of localized stress that leads a mechanically drilled anchor to work loose over time.

Full bonding fastener specifications and compatible adhesive guidance are published by Specialinsert, the manufacturer.

Browse the full line of bonding fasteners at Chemical Concepts.

Need Help?

Need help matching this bonded stud to a female receiver or choosing an adhesive? Call (800) 220-1966 or email [email protected].