Confirmat Style Connecting Screws
| Confirmat style connecting screws. |
Origins
Europeans pioneered the development of man-made materials for use in cabinetry. Medium Density Fiber Board (MDF) and Particle Board offer inexpensive but dimensionally true and stable cabinet materials. 
These are often found with a melamine plastic coating that facilitates cleaning and eliminates an extra step in the finishing process. One down side to these materials is their notoriously poor ability to hold fasteners.
Knock-down assembly is a trademark attribute of European cabinetry and it is not uncommon for Europeans to move their existing cabinets to a new house. Often, these cabinets even utilize a common hanging rail found in many European homes. The doors can be easily removed and the boxes can be broken down for transportation. Confirmat style screws are designed to be able to be removed and reinserted without damaging the man made materials.
If you assemble melamine cabinets or work with Particle Board or Medium Density Fiberboard (MDF), these unique fasteners have been specially designed to make your life easier. The large diameter shoulder beneath the head acts much like a steel dowel pin and locks the shank in position to minimize the possibility of board failure. This creates a remarkably strong and stiff joint that generally does not require glue. Screws require a pilot hole through both pieces of material. Simply clamp the pieces together and drill with a specialized 3-step drill bit. Specially designed screw caps are available to fit a hole in the drive recess.
| |
5 x 40mm |
7 x 50mm |
| Recess Size |
#2 Pozi |
#3 Pozi |
| Equivalent Length |
1.5" |
2" |
| Equivalent Diameter |
3/16" |
9/32" |
| Step Drill Graduations (mm) |
3.5 / 5 / 7.62 |
5 / 7 / 10 |
| For Material Thickness |
1/2" to 5/8" (12 to 16mm) |
5/8" to 3/4" (16 to 19mm) |
| Common Use |
Drawer Boxes / Light Duty Projects |
Cabinet Carcasses and Free Standing Furniture |
Confirmat Style Connecting Screws should be no farther apart than 5" or 128mm on center and no more than 13/32" or 36mm from each edge. Generally, that translates to:
- 4 per joint in a 24" / 600mm deep base cabinet
- 3 per joint in a 305mm / 12 deep wall unit.
McFeely’s offers screws and caps in various quantities as well as introductory kits for both sizes. We also offer a 3 step drill bit with a replaceable pilot and PoziDrive driver bits for both sizes. To see our offering, please click here.
Can’t find the answers you’re looking for? Call
800-443-7937 and ask for our Product Support Department or
send us an email.
Consider these 3-D Precision Squares and Clamps to assist you: