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This Würth M4 x 45mm breakaway machine screw pairs a wide truss head with a combination Phillips/slotted drive and a fine-thread shank, giving cabinet installers a reliable fastener for knobs, pulls, and decorative hardware that needs a clean, flush finish after installation.
The breakaway machine screw is purpose-built for applications where the fastener head must disappear after installation. Once the screw is driven to full depth, the head separates at a designed break point, leaving the shank flush or recessed at the surface. That makes it a practical choice when attaching decorative cabinet hardware, panel-mounted components, or any fitting where a protruding screw head would be visible or interfere with adjacent surfaces. The 45mm length suits applications that require thread engagement through a door panel, drawer front, or hardware body with material remaining on the far side.
The screw is zinc-finished steel, appropriate for dry indoor cabinetry and millwork installations where moisture is not a factor. Fine thread on the M4 shank provides tight engagement in pre-tapped holes and standard metric hardware nuts. The blunt point is standard for machine screws that thread into existing tapped holes rather than self-starting into material. No nibs are present under the truss head, so the bearing surface sits flat and smooth against the workpiece face.
Cabinet shops, finish carpenters, and hardware installers working with metric European hardware are the primary buyers. Any job where the screw head needs to be gone after installation — concealed hardware, flush-mount panels, or decorative fixtures on finished cabinet faces — is a fit for this screw. The combination drive means the installer is not locked into a single bit type, which matters when working through a variety of jobs in a single day. Packs of 100 suit both production environments and smaller installation projects where having extras on hand prevents delays.
The screw is engineered with a reduced-diameter neck between the head and the shank. When the screw reaches full depth, continued torque shears the head at that neck, leaving the fastener seated flush or below the surface. The head cannot be reattached once it has broken away.
It accepts a #2 Phillips bit or a flat-blade slotted bit. Use the Phillips recess for powered driving; the slotted groove is there for situations where only a flat-blade driver is available.
Yes. The blunt point on a machine screw requires a pre-tapped hole or a nut to engage. It will not self-start into wood or undrilled metal.
No. M4 metric thread and 8-32 UNC thread are close in diameter but use different pitch standards and are not interchangeable. Check that your hardware is threaded for M4 before ordering.
The zinc finish is suited to dry indoor environments. It is not recommended for exterior or high-humidity applications.
When the job calls for a fastener that disappears after installation, this Würth M4 x 45mm breakaway truss head screw handles the work cleanly, in the right thread standard for metric cabinet hardware, with a drive that works with common bits already in the kit.
Sold In: 100 Each