___ are hardwood blocks with threaded rods through them.

___ are hardwood blocks with threaded rods through them.

• A. Wood screws
• B. Nails with nuts
• C. Dowel pins
• D. Bolts

Answer: (A)

This question tests how threaded fasteners grip wood to hold pieces together. A wood screw is designed to bite into wood with its sharp, threaded shank, so when you drive it through one block and into another, the threads cut into the wood and pull the pieces tightly together as you tighten. That direct interaction of the threaded rod with the wood is exactly what’s described, making a wood screw the best fit for joining hardwood blocks. Nails with nuts aren’t a standard combination, dowel pins are unthreaded and mainly for alignment, and bolts require nuts and washers and aren’t the typical choice for this specific through-block fastening in hardwood.

This question tests how threaded fasteners grip wood to hold pieces together. A wood screw is designed to bite into wood with its sharp, threaded shank, so when you drive it through one block and into another, the threads cut into the wood and pull the pieces tightly together as you tighten. That direct interaction of the threaded rod with the wood is exactly what’s described, making a wood screw the best fit for joining hardwood blocks. Nails with nuts aren’t a standard combination, dowel pins are unthreaded and mainly for alignment, and bolts require nuts and washers and aren’t the typical choice for this specific through-block fastening in hardwood.