Got a Screw Loose?

Apparently, it all started with olive oil.

In the 4th century B.C., the principle behind screw threads came into use for pressing the oil out of olives. Two millennia later, we have far more options. Every boat owner eventually runs into choices between fine and coarse threads; self-tapping and wood screws; and lock washers and lock nuts.

Sometimes, we need a compound to make sure we can take it apart later. Sometimes, we want a compound to make sure it won’t come apart later.

Let’s look at the numerous options so that you will be prepared the next time you need to hold it together.

SCREWS

Screws work well for noncritical fastening situations, such as attaching trim, securing a Bimini frame, or installing a flag socket. If you are depending on the installation for safety or reliability (with things such as handrails, mechanical systems or critical components), then bolts should be used.

A self-tapping screw has a uniform width (no taper), and the threads run the entire length of the fastener. Self-tapping screws