"A rivet is a permanent mechanical fastener. Before being installed, a rivet consists of a smooth cylindrical shaft with a head on one end. The end opposite the head is called the tail. On installation the rivet is placed in a punched or drilled hole, and the tail is upset, or bucked (i.e., deformed), so that it expands to about 1.5 times the original shaft diameter, holding the rivet in place. To distinguish between the two ends of the rivet, the original head is called the factory head and the deformed end is called the shop head or buck-tail"
IMPORTANCE:
Before welding techniques and bolted joints were developed, metal framed buildings and structures such as the Eiffel Tower, Shukhov Tower and the Sydney Harbour Bridge were generally held together by riveting. Also automobile chassis were riveted. Riveting is still widely used in applications where light weight and high strength are critical, such as in an aircraft. Many sheet-metal alloys are preferably not welded as deformation and modification of material properties can occur.
INDIAN CODES:
Hexagon Head Bolts, Screws and Nuts of Product Grades A and B, Part 1: Hexagon Head Bolts (Size Range M 1.6 to M 64)
Boiler Rivets (12 to 48 mm Diameter)
Hot Forged Steel Rivets for Hot Closing (12 to 36 mm Diameter)
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