AMT General Prep ----- Materials and Processes

8277: How is the locking feature of the fiber-type locknut obtained?

By the use of an unthreaded fiber locking insert

8268: A Particular component is attached to the aircraft structure by the use of an aircraft bolt and a castle tension nut combination. If the cotter pin hole does not align within the recommended torque range, the acceptable practice is to

Change washers and try again

8262: (Refer to Figure 42) Which of the bolt head code markings shown identifies an AN corrosion resistant steel bolt?

3

8267: (Refer to Figure 43) Identify the clevis bolt illustrated

3

8274: The aluminum code number 1100 identifies what type of aluminum?

99% commercially pure aluminum

8266: When the specified torque value for nuts is not give, where can the recommended torque be found?

AC 43.13-1B

8269: A bolt with a single raised dash on the head is classified as an

AN corrosion-resistant steel bolt

8264: Which statement regarding aircraft bolts is correct?

In general, bolt grip lengths should equal the material thickness

8272: A bolt with an X inside a triangle on the head is classified as an

NAS close tolerance bolt

8271: Where is an AN clevis bolt used in an airplane?

Only the shear load applications

8257: What is generally used in the construction of aircraft exhaust collectors, stacks and manifolds?

Stainless steel

8257-1: What metal has special short-time heat properties and is used on the construction of aircraft firewalls?

Titanium alloy

8270: How is a clevis bolt used with a for-end cable terminal secured?

With a shear nut tightened to a snug fit, but with no strain imposed on the fork and safetied with a cotter pin

8261: The Society of Automotive Engineers (SAE) and the American Iron and Steel Institute use a numerical index system to identify the composition of various steels. In the number "4130" designating chromium molybdenum steel, the first digit indicates

basic alloying element

8275: Aircraft bolts are usually manufactured with a

class 3 fit for the threads

8256: Unless otherwise specified, torque values for tightening aircraft nuts and bolts relate to

clean, dry threads

8265: Generally speaking, bolt grip lengths should be

equal to the thickness of the material which is fastened together

8273: The core material of Alclad 2024-T4 is

heat-treated aluminum alloy, and the surface material is commercially pure aluminum

8259: Alclad is a metal consisting of

pure aluminum surface layers on an aluminum alloy core

8263: Aircraft bolts with a cross or asterisk marked on the bolt head are

standard steel bolts

8260:A fiber-type, self-locking nut must never be used on an aircraft if the bolt is

subject to rotation

8260-1: Self-locking nuts may be used on an aircraft provided that

the bolt or nut is not subject to rotation

8276: In the four-digit aluminum index system number 2024, the first digit indicates

the major alloying element

8258: Unless otherwise specified or required, aircraft bolts should be installed so that the bolt head is

upward, or in a forward direction