Non Threaded Fasteners

Question 1

What are the different types of non threaded fasteners?

Answer 1

Rivets and blind fasteners

Keys

Pins

Washers

Snap rings

Straps

Lock wires

Adhesives

Question 2

How are small rivets measured?

Answer 2

Weight per 1000

If 1000 rivets weigh 6oz they are call 6 oz rivets

Question 3

Solid rivets are often found in?

Answer 3

Solid rivets provide maximum strength so they are found in the transportation and aircraft industries

Question 4

What are blind rivets used for?

Answer 4

Blind rivets are used where there is no access to the back of a piece.

Question 5

What are the 4 types of keys?

Answer 5

Square or flat keys

Pratt or Whitney keys

Woodruff keys

Gib head key

Question 6

What does 1022 stamped onto a woodruff key mean?

Answer 6

10 = width in 32nds

22 = nominal key diameter in 8ths

(10x1/32=5/16)

(22x1/8 =2 3/4inch)

Question 7

Tapered key has a taper of ____ per foot

Answer 7

1/8th inch

Question 8

True or false? It is ok to use a tapered gib key on cast iron?

Answer 8

False

Cast iron is brittle and will crack

Question 9

What are the main functions of a spline with a helical curvature?

Answer 9

Act as drivers for the component in which they mesh

Allow sliding helical gear to shift into mesh with another helical gear without gear clash occurring

Two helical gears in mesh and rotating under torque produce thrust. A helical spline offsets or counteracts that axial or end thrust.

Question 10

What is the taper per foot of a tapered dowl pin?

Answer 10

1/4 inch per foot