Fastening MDF, Melamine & Particleboard

Most man-made materials used in cabinetmaking are basically composed of wood dust in a resin matrix − there is no traditional grain structure to resist withdrawal forces. Fortunately, there are solutions:

Confirmat screws were developed specifically for edge-to-face joining of particle-based products like melamine board. They have deep threads on an oversize shank, a clearance-hole diameter shoulder beneath the head, and a head that is just slightly larger than the shoulder. Installation requires a special three-step drill bit, but the result is a tight, strong joint.

RTA screws make stronger joints than cabinet-connecting screws, but the con-struction is "fussier." The screws have large wafer heads, blunt tips and machine screw threads that mate with small cylindrical cross-drilled barrel nuts. Installation requires precise drilling of two blind holes, but the system can be used with many materials and joint conditions.

If assembly speed and cost are important, use an extra-long cabinet screw, such as our FSL or ProMax® series screws. Predrill when working close to the edge (even when using auger point screws), since man-made materials are prone to crumbling. Note that it is best to consider this a permanent clamp while an adhesive is curing, rather than a primary fastener.


Confirmat screws

Cabinet CFonnecting Screws

Assemble melamine cabinets easily

Do you assemble melamine cabinets? Do you work with particleboard or Medium-Density Fiberboard (MDF)? These unique fasteners have been specially designed to make your life easier! The large shoul-der beneath the head locks the shank in position to minimize the possibility of board failure. An extra-long stem on the specially designed screw cap fits a hole in the drive recess, preventing most accidental removal. Screws require a pilot hole through both pieces of material. Use the 7 x 50mm (approx. 2 in.) screws with 3/4 in. materials and the 5 x 40mm (approx. 1-1/2 in.) with 1/2 in. materials.


Standard European Cabinet Connectors

Standard European Cabinet construction uses 2 rows of blind holes located on 32mm centers on each side panel.

This 32mm (or Euro-Style) construction system allows for easy customization of the cabinet. Shelf pins, drawer runners and other accessories are all based on the 32mm measurement.

Connecting European Cabinet boxes is easy with these connecting screws. Drill out the appropriate 8mm holes, insert the threaded rod through the holes in both boxes then tighten by attaching the caps to both ends, exactly aligning the cabinets. For different panel thicknesses, choose the proper length screw from the list below. Short screws can also be used for drawer pulls. Clear zinc plated with brown or ivory caps. Uses 5/16” slotted bit.


Confirmat Connecting Screws

RTA Connecting Bolts and Barrel Nuts

Connecting Bolts and Barrel Nuts make strong joints

You’ve probably built some "ready to assemble" (RTA) furniture that used this fastener. This fastener is popular because it creates strong joints, doesn’t depend on the poor fastener-holding power of end grain and it is virtually impossible to assemble the joint incorrectly, a real advantage in the RTA market. Joint construction is easy. Drill a 1/4 in. clearence hole into the end grain for the connector bolts. Then, drill an intersecting 13/32 in. diameter hole for the 3/8 in. barrel nut. Drop in the barrel nut, align it to the connector-screw hole, slip in the connector screw, tighten with a 4mm allen wrench, and your done. Critical details: The connector-screw head is 15mm (a bit less than 5/8 in.) in diameter and 3/32 in. thick. The hole and barrel nuts are offset 1/4 in. from the bottom.


Joint Connector Bolt Wood screws (JCBW)

Joint Connector Bolt Wood (JCBW) Screws

JCBW screws are ideal when you need a strong right-angle joint with a decorative, low-profile head.

They are commonly found on "ready to assemble" (RTA or KD) furniture. Roughly equivalent to a #14 wood screw, these screws have deep threads for exceptional holding power. Predrilling for these screws is a must: 3/16 in. for softwoods, 7/32 in. for hardwoods. Head is 17mm (approx. 11/16 in.) dia. x 2mm (5/64 in.) high and has a decorative beveled edge. Install using a 4mm hex driver. Plated, low-carbon steel.