The M10 screw that holds your 12-word seed phrase

5 BIP39 words per Screw. Same pentagon-bead mechanism as the Cell: first 4 letters on 4 flat faces, sequence notch on the 5th. Five beads on a Ti G2 post, sealed inside the M10 cavity. For a 12-word phrase, the 3-Screw pack ($199) covers it. For a 24-word phrase, the 5-Screw pack ($299) covers it. The 5-Screw pack and the Set are the same price. Pick based on whether you want one form factor in five locations (Screw pack) or four object types in four locations (Set).

Pick by where the object will live and how you want to split your phrase. Screw ($199 / $299): structural placement. Installs in furniture you already own. Best if you have a workbench, shelving, or M10-fastened fixtures. Cell ($149 / $219): portable. Goes in a battery drawer. Best if you rent, lease furniture, or cannot install hardware. Hinge ($99 / $179): single-object 12-word path. Cheapest entry point. Best for 12-word phrases or the cheapest 24-word setup (2 Hinges = $179).

Anywhere you already use M10 × 1.5 fasteners. Common placements: Workbench legs and frames — M10 is standard for benchtop attachment points Heavy-duty shelf brackets — floating shelves and reinforced wall mounts TV mounts and monitor arms — most wall-mount hardware uses M10 lag bolts Chair frames and table aprons — knock-down and modular furniture Cabinet panels — flat-pack furniture with bolt-through joints Pick a location where one extra fastener does not stand out. Match the surrounding hardware: do not put your KeepCrypt Screw as the only M10 in a sea of M6 wood screws. The placement guide in every pack covers the failure mode of each location type.