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The Hettich America Fixing Screw for 25mm Thickness Shelf is a fine-thread, flat head assembly screw engineered for attaching shelves and shelf hardware in cabinet and furniture applications where the shelf stock measures 25mm thick. The galvanized finish provides corrosion protection suited to interior cabinetry environments.
Shelf thickness drives screw length selection more than almost any other variable in cabinet assembly. At 25mm, the shelf stock is on the thicker end of common panel material — a step up from 16mm and 18mm shelves — and the screw length must keep pace. This fixing screw is matched to that dimension so the threads engage fully through the shelf panel without the tip breaking through the back face or leaving the shank under-embedded. For installers working through a run of kitchen uppers, bath vanities, or furniture carcasses built with 25mm shelving, having the correct length on hand keeps the assembly moving without substitutions.
Fine thread is the right choice here because 25mm shelf material is often a denser engineered panel — hardwood plywood, melamine-faced particleboard, or MDF — where fine thread pulls tighter and holds more reliably than a coarse pitch. The flat head countersinks cleanly so the fastener sits flush at the shelf surface, which matters in open-shelf cabinetry and anywhere the screw head would otherwise be visible. The galvanized coating protects the steel in the controlled humidity of an interior cabinet environment. This screw ships from Hettich America under part number 9229243, making it straightforward to specify alongside other Hettich shelf hardware.
Cabinet shops building box runs with 25mm shelves will find this screw slots directly into the Hettich hardware system. It is equally useful for installers assembling knockdown furniture, fitting adjustable shelving in retail display cases, or finishing out a custom bookcase built from 25mm plywood. The #2 Phillips drive means no specialty bits are needed; any standard driver already on the bench or in the bag handles installation. This is a single-purpose shelf fixing screw, specified to the thickness — not a general-purpose fastener stretched to fit — which keeps the assembly accurate and the finish consistent across every shelf in the project.
The screw length is matched to the shelf panel thickness so the threads engage fully through the material without the tip over-penetrating the back face. Using a length sized to the shelf keeps the joint tight and the installation clean.
Yes. Fine thread grips more consistently in denser engineered panels, providing reliable holding power where a coarse thread might not seat as securely in the material matrix.
In most shelf panel applications the flat head will countersink into the material as the screw is driven. Pre-drilling a countersink is worth doing in harder substrates to ensure a clean, flush seat.
The manufacturer part number is 9229243. You can use that reference when ordering alongside other Hettich shelf hardware or when specifying for a repeat project.
The screw is sized and specified for 25mm shelf thickness. While it is a Hettich product, the flat head Phillips design is compatible with standard shelf fixing applications at that panel thickness beyond just Hettich-branded hardware systems.
When the shelf stock is 25mm, this Hettich fixing screw is the direct match — the right length, the right thread, and the right head profile to seat cleanly and hold without guesswork.
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