Screw or bolt -
A screw is commonly used for holding purpose like to hold together two objects and for positioning. It is pointed from one end and on the other side
it has a head. It is commonly used for woodworking and construction activities.
Types of Screw are - Eye, sheet metal, wood, masonry and confast screws etc.
Types of Screw Heads - Round, Countersunk, Oval, Flanged, Pan, Button, Truss and cheese head etc.
A nail is an object which is pointed on one end and the other side has a head.
These are made of steel and wrought iron and is commonly used in woodworking activities.
Types of Nails - Brads, double-ended, brass, coil, panel, plastic, head and corrugated, oval nails etc.
Nail length and diameter in mm are - 20-1.2, 25-1.4, 30-1.6, 35-1.6, 35-1.8, 40-2.0, 45-2.2, 50-2.2, 55-2.2, 55-2.5, 60-2.5, 60-2.8, 65-2.8, 65-3.1, 70-3.1, 80-3.1, 80-3.4, 90-3.4, 100-3.8, 90-3.8,
100-4.2, 110-4.2, 120-4.2, 130-4.6, 140-5.5, 160-5.5, 180-6.0, 210,7.0
Nuts - A nut is a common type of fastener having hexagonal shape and have a hole in it. It is found almost in every home and is used along with bolt for fasten purpose.
These are made from carbon steel and alloy.
Type of nuts - Some of the common type of nuts are - slotted, split, square, coupling, T, sleeve, weld, flange, and cross nuts etc.