Description
Most adhesive-mount studs on the market use a perforated base, holes that let excess adhesive squeeze through the bottom during installation, which wastes adhesive and leaves a messier bond. The Specialinsert Master-Plate M1Y3815 skips that design. It uses a solid, hole-free 38x15mm rectangular base with round spacer feet that set the bondline thickness on contact and keep adhesive contained under the part instead of spilling out the sides. The threaded post gives you a 1/4-20 male mounting point for bolting on hardware after the bond cures, no welding or drilling into the substrate. The narrow rectangular footprint suits mounting locations where a round or square base wouldn’t fit cleanly.
Key Product Details
| Property | Value |
|---|---|
| Fastener Type | Male Threaded Stud (M1) |
| Base Style | RS, solid base with round spacer feet (ATC), no perforations |
| Base Size | 38mm x 15mm rectangular (1.5″ x 0.6″) |
| Thread | 1/4″-20 |
| Stud Length | 1″ |
| Material | Zinc Plated Steel |
| Mounting Method | Adhesive bonding, no drilling or welding |
| Chemical Concepts SKU | CCH-M1Y3815-1/4-20X1 |
Adhesive Use: RS Base vs. Standard Perforated Base
| Base Style | Adhesive per Piece | Pieces per 50ml Cartridge | Avg. Cost per Bond* |
|---|---|---|---|
| Standard perforated base | 2.32 g | 21 | $0.38 |
| Master-Plate RS (this item) | 0.65 g | 75 | $0.10 |
*Based on an $8.00 50ml adhesive cartridge, per Specialinsert lab testing. Actual cost depends on the adhesive you use.
Performance in Production
- No perforations means no adhesive squeeze-through to wipe up and a tighter, more even bondline than holed designs allow.
- Round spacer feet set the bondline thickness automatically on contact, no serpentine bead pattern or guesswork on glue volume.
- Lab testing recorded a 26.9% increase in pull-out strength and a 48.5% increase in shear strength versus a standard perforated base of the same size.
- Same testing recorded roughly 72% less adhesive used per piece versus the standard perforated base.
- Zinc plating resists corrosion in damp or outdoor-adjacent environments.
- Match the adhesive to the substrate. Options used with this base style include LORD 406/19, Chem-Set Ultralok 420GB, LORD 310A/B, Huntsman 2015, and Huntsman 2053.
Common Applications
- Threaded mounting points for bolting on brackets, panels, or hardware after bonding to metal, plastic, composite, or stone surfaces
- Jobs where a perforated-base stud would leave visible glue squeeze-out and a cleaner finish matters
- Blind-mount or embedded applications where drilling or welding into the substrate isn’t practical, especially in narrow or constrained mounting footprints
- Standoffs and attachment points in sign, display, and panel assembly
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