Materials and Processes O&P
Comprehensive Questions (Frequently
Tested) with Verified Answers Graded A+
Chrome-Molybdenum Steel - Answer: Which steel alloy is noted for its toughness and is most
commonly used for aircraft tubular structure, frame members, engine mounts, landing gear
parts, and other structural parts?
By cold working the metal - Answer: How do you work harden a piece of metal
Nitriding - Answer: Which casehardening process is accomplished on steel alloys, after heat
treating, to produce a wear resistant surface on engine parts?
Barcol tester - Answer: What portable hardness tester is commonly used for testing aluminum
alloys. copper, brass, or other relatively soft materials?
Class 3; medium fit - Answer: What class of thread are a/c bolts commonly manufactured?
AN bolts can be identified by the code markings on the bolt's head. - Answer: How may AN
standard steel bolts be identified?
Close tolerance bolts are machined to more accurate dimensions. - Answer: What is the
difference between general purpose bolts and close tolerance bolt?
At joints where either the bolt or nut is subject to rotation. - Answer: Where may self-locking
nuts NOT be used?
Comprehensive Questions (Frequently
Tested) with Verified Answers Graded A+
Chrome-Molybdenum Steel - Answer: Which steel alloy is noted for its toughness and is most
commonly used for aircraft tubular structure, frame members, engine mounts, landing gear
parts, and other structural parts?
By cold working the metal - Answer: How do you work harden a piece of metal
Nitriding - Answer: Which casehardening process is accomplished on steel alloys, after heat
treating, to produce a wear resistant surface on engine parts?
Barcol tester - Answer: What portable hardness tester is commonly used for testing aluminum
alloys. copper, brass, or other relatively soft materials?
Class 3; medium fit - Answer: What class of thread are a/c bolts commonly manufactured?
AN bolts can be identified by the code markings on the bolt's head. - Answer: How may AN
standard steel bolts be identified?
Close tolerance bolts are machined to more accurate dimensions. - Answer: What is the
difference between general purpose bolts and close tolerance bolt?
At joints where either the bolt or nut is subject to rotation. - Answer: Where may self-locking
nuts NOT be used?
