Half the thickness. More room to build. Standard M3 stack nuts are 3mm thick. That doesn't sound like much — until you're cramming an ESC and FC into a 20mm standoff frame and realizing you've got zero clearance left. This nut is 1.5mm. Half the bulk. All the hold. Built for Tight Builds Compact FPV frames — especially those running 20mm aluminum standoffs — leave almost no vertical breathing room between boards. Standard 3mm nuts eat into that margin fast, forcing awkward component positioning, creating pressure on solder joints, and adding unnecessary grams. The Ultra-Thin FPV Stack Nut exists to reclaim that space. Specifications Thickness: 1.5mm (verified — Mitutoyo caliper confirmed) Thread: M3 Material: 6061 Aluminum Alloy Finish: Anodized black Grip Surface: Knurled edge for finger-tightening without tools Weight: Significantly lighter than standard steel or thick aluminum M3 nuts Application: ESC/FC stack securing on FPV drone frames Why 6061 Aluminum? 6061 is the gold standard for precision aerospace and RC hardware. It offers: High strength-to-weight ratio — strong enough to secure your stack securely, light enough to not matter on the scale Excellent corrosion resistance for repeated crash-and-rebuild cycles Clean anodizing adhesion for that matte black finish that doesn't flake Who This Is For FPV pilots running 20mm low-profile aluminum standoffs in tight toothpick, micro, or whoop-adjacent builds Builders who optimize every gram of AUW Anyone who has wrestled a nut into a cramped stack and wished the nut was just… smaller 1.5mm vs. Standard 3mm — What You Actually Gain Feature Standard 3mm Nut This Nut (1.5mm) Thickness 3.0mm 1.5mm Stack clearance saved — +1.5mm per nut Weight Higher Lower Grip Varies Knurled edge Material Often steel or low-grade alloy 6061 Aluminum Less Bulk. More Clearance. Better Build. Every millimeter counts in a compact FPV build. The Ultra-Thin FPV Stack Nut gives you that millimeter back — four times over, one corner at a time. Add to cart and stop fighting your stack.
