Non Threaded Fasteners

Question 1

6 common heads of rivets are

Answer 1

button
flat countersunk
flat
truss
oval
oval countersunk

Question 2

small rivets are measured by

Answer 2

weight per 1000 rivets

Question 3

rivet used in transportation industry, installed cold to prevent structural damage and provides maximum joint strength

Answer 3

solid rivet

Question 4

rivet, most common, have all compressive and shear strength of solid rivets when they are clinched and holes must be pre drilled

Answer 4

semi tubular rivets

Question 5

rivet used in cutlery and made in male and female pairs

Answer 5

compression/cutlery rivets

Question 6

rivets that save time by not pre drilling, effective in leather, wood, plastics, thin sheet metal. strength and thickness of workpiece is limiting factor

Answer 6

self piercing rivets

Question 7

rivet used in high volume production line, they may be two pieces with a mushroom cap to give a more finished appearance

Answer 7

tubular rivets

Question 8

rivets used in light duty and confined areas

Answer 8

blind rivets

Question 9

rivets that is high performance, flush break blind fasteners

Answer 9

structural breakstem rivets

Question 10

rivets used for blind application, detonates a small explosive charge

Answer 10

explosive rivet

Question 11

the strongest structural breakstem fastener, they are available in bolt and collar style, prevents movement or flexing

Answer 11

lockbolt fastener

Question 12

how much clearance should keys have on top

and how should they fit on the sides

Answer 12

.002 to .005 top

fit tight on sides

Question 13

key used on shafts over 6 inches in diameter

Answer 13

flat

Question 14

key used on shafts under 6 inches in diamter

Answer 14

square

Question 15

key used when hub slides back and forth on shaft

Answer 15

pratt and whitney

Question 16

key used when shaft and hub are subject to very heavy loads

Answer 16

chamfered key

Question 17

key used in lighter applications such as pulleys and gears

Answer 17

woodruff key

Question 18

how are wood ruff keys sized

Answer 18

width/32 diameter/8

Question 19

key used to lock the hub or shaft in heavy loading condition and transmitting heavy loads

Answer 19

gib head key

Question 20

pin used to aligned parts

available in.0002 oversized or .001 for repairs

Answer 20

dowel pin

Question 21

pin is press fit in a reamed hole, are used for precise machine assembly, has a 1//4 inch per foot taper

Answer 21

tapered dowel pin

Question 22

pin used to connect a gear or other parts to a shaft, designed to disconnect on overload

Answer 22

shear pins

Question 23

the 2 radial locking pins are

Answer 23

solid grooved pin

hollow roll or spring pin

Question 24

washer found in bearing assemblies, where positive location is important. this assembly uses a taper sleeve, tapered bored bearing and a radially slotted lock nut

Answer 24

tab washer

Question 25

washer used in watertight and gas tight joint

Answer 25

belleville or conical washer

Question 26

washer common with steel structural steel components such as I beam that require square bearing surfaces for riveting and bolting

Answer 26

bevelled washer

Question 27

sealants are categorized into what 3 categories

Answer 27

rigid-hardening
flexible-non hardening
tapes

Question 28

sealer used on small surface irregularities almost paper like

Answer 28

gasket sealer

Question 29

sealant for close fitting components, RTV- Room temperature vulcanizing is an example

Answer 29

anaerobic sealant