Non Threaded Fasteners Flashcards
6 common heads of rivets are
button flat countersunk flat truss oval oval countersunk
small rivets are measured by
weight per 1000 rivets
rivet used in transportation industry, installed cold to prevent structural damage and provides maximum joint strength
solid rivet
rivet, most common, have all compressive and shear strength of solid rivets when they are clinched and holes must be pre drilled
semi tubular rivets
rivet used in cutlery and made in male and female pairs
compression/cutlery rivets
rivets that save time by not pre drilling, effective in leather, wood, plastics, thin sheet metal. strength and thickness of workpiece is limiting factor
self piercing rivets
rivet used in high volume production line, they may be two pieces with a mushroom cap to give a more finished appearance
tubular rivets
rivets used in light duty and confined areas
blind rivets
rivets that is high performance, flush break blind fasteners
structural breakstem rivets
rivets used for blind application, detonates a small explosive charge
explosive rivet
the strongest structural breakstem fastener, they are available in bolt and collar style, prevents movement or flexing
lockbolt fastener
how much clearance should keys have on top
and how should they fit on the sides
.002 to .005 top
fit tight on sides
key used on shafts over 6 inches in diameter
flat
key used on shafts under 6 inches in diamter
square
key used when hub slides back and forth on shaft
pratt and whitney