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
