Chapter 2 Section B (Airframe Textbook Unit 2)

17. Rivet length is measured in increments of __________-inch and rivet diameters are measured in increments of ___________-inch

1/16

1/32

18. Identify the head shape of each of these solid aluminum alloy rivets:

a. AN426 (MS20426) _________________________

b. AN470 (MS20470) _________________________

c. AN430 _________________________

d. AN442 _________________________

a. countersunk

b. universal

c. round

d. flat

19. Prior to installing an AN426 rivet, the metal must be ________________ or ____________________.

countersunk

dimpled

20. Identify the alloy used in solid aluminum rivets having these head identification characteristics:

a. no mark ________________________________

b. dimple _________________________________

c. teat or raised dot _________________________

d. raised dashes ____________________________

e. raised cross _____________________________

a. 1100

b. 2117

c. 2017

d. 2024

e. 5056

21. Give the alloy number used for rivets identified by the following code letters:

a. A______________________________

b. B______________________________

c. AD ____________________________

d. D _____________________________

e. DD ____________________________

f. E ______________________________

a. 1100

b. 5056

c. 2117

d. 2017

e. 2024

f. 7050

22. Magnesium skins should be riveted using a rivet identified by the code letter ___________.

B

23. 2017 Aluminum alloy rivets, identified by the code letter D must be _________________________ before

they can be driven. To maintain them in an annealed condition, they are quenched and immediately stored in a freezer. For this reason, they are commonly called ______________________ rivets

Heat Treatment

Icebox

24. Rivets that can be installed without access to both ends are called _____________ rivets.

blind

25. A(n) _________________ is a special type of rivet that leaves a threaded hole for a machine screw after installation.

rivnut

26. Three commonly used turn-lock fasteners used on cowlings, access panels, etc., are referred to by their trade names, and are called ________________________, __________________________ and

________________________ fasteners.

Dzus

Airloc

Camlock