What are Screws ?
A screw is a type of fastener, sometimes similar to a bolt (see Differentiation between bolt and screw below), typically made of metal, and characterized by a helicalridge, known as a male thread (external thread) or just thread. A screw is an inclined plane wrapped around a nail. Some screw threads are designed to mate with a complementary thread, known as a female thread (internal thread), often in the form of a nut or an object that has the internal thread formed into it. Other screw threads are designed to cut a helical groove in a softer material as the screw is inserted. The most common uses of screws are to hold objects together and to position objects.
There are vairous types of Screws viz :
|Machine Screws||Sheet Metal Screws||Flat Head MS & SMS Screws||Oval Head & Binding Head Screws||Hex Head & Hex Washer Screws|
|Round Head & Pan Head Screws||Truss Head & Fillister Head Screws||Deck Screw||Drywall Screws||Thread Cutting & Rolling Screws|
|Phillips, Slotted & Socket Screws||Six Lobe, Square & Security Screws||Set Screws||Socket Screws||Socket Cap Screws|
|Slotted Flat Head Cap Screws||Self Drilling Screw||Particle Board Screw||Wood Screw||Sems Screw|
|Self Tapping Screw||Concrete Screw||Chipboard Screw||Euro Screw||Stainless Steel Screw|
|Thread Rolling Screw||Roofing Screw||Construction Screws||Collated Screw||Wing Screws|
|Thread Cutting Screw||Coach screws||Furniture Screw Cap Screws||Machine screws||Sheet Metal Screws|
|Lag Screws||Binding Post Screw||Multiple Material screws||Wind Screws||Drive Screws|
|Eye Screws||Weld Screws||Flooring Screws||Dowel Screws||Roofing Screws|
|Accordion Screws||Euro Screws||Jack Screws||Thumb Screws||Screw Hooks|
|Screw Eyes||Security Screws|