#5 screw questions

What size pilot hole for a #5 screw in hardwood?

Drill a 3/32″ (0.094″) pilot hole for a #5 wood screw in hardwood — oak, maple, cherry, walnut. In very hard stock like hard maple or hickory, go up 1/64″.

What size pilot hole for a #5 screw in softwood?

Use 5/64″ (0.078″) in pine, cedar, fir, and other softwoods — one size under the hardwood bit, because soft fibers compress around the threads.

What clearance hole does a #5 screw need?

9/64″ (0.141″) through the piece being fastened, just over the #5 shank’s 0.125″, so the screw slides through and clamps the joint instead of holding it apart.

What countersink fits a #5 flat head screw?

A 1/4″ countersink lets a #5 flat head sit flush. A #5 combination pilot-countersink bit drills pilot, clearance, and countersink in one pass.

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