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This Würth #8 x 1-3/4 inch truss head breakaway machine screw is designed for installations where the fastener head must be removed after driving, leaving a flush, low-profile connection that resists casual removal. Fine thread, blunt point, and a combination Phillips/slotted drive make it compatible with standard pre-tapped holes and common installation tools.
The breakaway design suits any installation where a flush, headless result is required after assembly. Common applications include mounting access panels, decorative hardware, and fixtures where the exposed fastener head would either pose a security concern or interrupt the finished surface. Once the head shears off at its calibrated break point, the remaining fastener shank holds the assembly without presenting a removal point to a standard driver. This makes it a practical choice for installations in semi-public spaces, built-ins, and cabinet work where tamper deterrence matters but full security hardware is not required.
The screw is zinc-plated steel, which provides the corrosion protection appropriate for dry, climate-controlled interior settings. Zinc plating is the standard choice for indoor cabinet and millwork installations. This finish is not rated for exterior exposure, high-humidity environments, or direct contact with ACQ pressure-treated lumber, so keep this screw to interior work.
Cabinet installers, finish carpenters, and millwork teams working on built-ins, panels, or access doors will find the breakaway format useful when the project spec calls for a clean, headless fastener after final assembly. The combination Phillips/slotted drive means most installers can use whatever driver is on hand during the installation phase. The truss head's wide bearing surface keeps the fastener from pulling through the mounting material before the head is designed to separate, which matters when the parts being joined have a larger clearance hole or softer substrate at the mounting face.
The shank remains threaded into the hole or nut, holding the assembly together. The break is designed so the remaining fastener sits flush or below the surface with no head available for a standard driver to engage.
Yes. The blunt point and fine thread are machine screw geometry, meaning the screw threads into a pre-tapped hole or onto a nut. It does not self-tap into wood or sheet metal.
The combination drive accepts a #2 Phillips bit or a flat-blade screwdriver. Use whichever is available during the installation phase, before the head separates.
Not with a standard driver. Extraction after head removal requires locking pliers, a screw extractor, or a drill. The design is intended to resist casual removal, not to provide permanent fastening.
No. The zinc finish is rated for dry interior environments. For exterior or high-humidity applications, a stainless or galvanized fastener is the right choice.
When the finished installation needs to be flush and resistant to tampering, this Würth breakaway machine screw delivers a clean result with tools already on the belt, in a zinc-plated format built for interior cabinet and millwork work.
Sold In: 100 Each
Quantity | Unit Price | Catalog | ||||
|---|---|---|---|---|---|---|
Sold in: 1000 Each |  WW48720 Mfr# 3670000272961 1000 | Würth #8 x 1-3/4" Truss Head Machine Screw, Breakaway Phillips/Slotted Drive - Blunt Point Fine Thread Zinc, 3670000272961 1000 - 1000/Box |