Usually brass plated with nickel. Aluminium is also used.
Well, honey, a bottle cap is not a screw. A bottle cap is typically used to seal the opening of a bottle, while a screw is a fastener used to join objects together. So, in short, a bottle cap and a screw are two different things, darling.
As the screw holes on the distributor caps are used to hold the cap down, when stripped, the cap could be JB Weld. ?æRe-drill the screw hole once the weld cures.
The type of screw cap typically used to secure a lamp shade onto a lamp is called a finial.
As of July 2014, the market cap for Edison International (EIX) is $18,558,206,293.76.
As of July 2014, the market cap for Consolidated Edison Inc (ED) is $16,785,766,143.52.
Cap screws are typically used with nuts, while machine screws are designed to be used with tapped holes. Cap screws have a smooth, rounded head, while machine screws have a flat, beveled head. Cap screws are usually larger and stronger than machine screws.
A machine screw typically has a slotted or Phillips drive whereas a cap screw typically has a socket or torx head.
Thomas Edison
A screw has external threads, so methinks the screw-top BOTTLE is really the screw, and the cap a mere receptacle. Yes. And a screw is really a modified wedge or incline.
Screw
steel cap screws are used where there is danger of rust because steel cap screw are resistant to corrosion because they form a tough oxide layer when exposed to oxygen. the strength of stainless steel is very good
A screw cap is used to seal a bottle or container to prevent leakage and to maintain the freshness of its contents. It is easy to use, resealable, and provides a tight seal to protect against oxygen and other contaminants.