AME T102 Hardware (Part 1) Flashcards
What does S.A.E. stand for?
S.A.E. - Society for Automotive Engineers.
What does A.A. stand for?
A.A. - Aluminum Association.
What are the four main standards?
1) A.N. - Airforce Navy
2) M.S. - Military Standard
3) N.A.S. - National Aerospace Standards
4) S.I. - Standard Imperial
What do these four abbreviations stand for? A.N. M.S. N.A.S. S.I.
1) A.N. - Airforce Navy
2) M.S. - Military Standard
3) N.A.S. - National Aerospace Standards
4) S.I. - Standard Imperial
Where will proper hardware for an aircraft be found?
Two Locations
1) The Illustrated Parts Manual (IPC)
2) Supplemental Type Certificate (STC)
What does the abbreviation ISO stand for?
International Organization of Standardization.
When measuring an AN Bolt you should measure to the nearest eighth backward / forward?
Backward.
You should measure an AN Bolt to the what nearest increment?
An eighth.
What is the hole in the bolt head meant for?
Lockwire
What is a hole found in the threads meant for?
Cotterpins
Part Number: AN5-H30A
What does the “H” mean?
How about the “A”?
An “H” means that there is a hole in the head.
An “A” means that there is an Absence of a hole in the threads.
When looking at a bolt, you find a symbol of a triangle. What does this mean?
The bolt is close tolerance.
An “X” is found on a bolt. What does this mean?
It is an AN bolt.
Screws are sized using their…
Number
Machine screws are non-structural hardware.
True or False
False. They may be either.
How are structural screws marked as opposed to their non-structural cousins?
Structural screws will always be marked with an “X.”
There are two types of non-structural screws - Type A and Type B. What is the difference?
Type A have a sharp, pointed end.
Type B are blunt.
Part Numbers:
- MS241693
- MS241693C
- MS241693B
- MS241693D
What is the difference between the four part numbers above?
The first is Cadmium Plated.
Second, Corrosion resistant.
Third, Brass (DD)
Fourth, Aluminum (AA)
How do you tell the difference between Zinc Plated hardware and Corrosion resistant steel just by looking at them?
Zinc is shinier than Steel.
How would you convert a screw size to an AN bolt size?
Multiply the screw size by four.
Add 0.060.
What is the main difference between coarse and fine thread?
Coarse thread has less suface area than fine thread does.
Define Major Diameter.
Minor Diameter…
Major: Body drill size.
Minor: Same as the inside hole of a nut.
What does the abbreviation NC stand for?
UNF?
NC - National Coarse
UNC - Unified National Fine
Are AN bolts NC or UNC?
UNC - National Fine
Classes of fit: 1 2 3 What is the meaning of each? 4 5
1 - Loose (A wing nut) 2 - Free (Screws) 3 - Medium (Bolts & maybe screws) 4 - Close (Will need a wrench) 5 - Tight (Only undone every twenty years)
Explain CAR 527.607 Fasteners Law
Each removable bolt, screw, nut, pin, or fastener whose loss could jeopardize the safe operation of the rotorcraft ust incorporate two separate locking devices.
Washers:
- AN 960
- AN 960C
- AN 960B
- AN 960D
What is the meaning of the last designation in each of the four part numbers?
1) Cadmium Plated
2) Corrosion Resistant
3) Brass
4) Aluminum
Part Number: AN 960-416L
What is the meaning of the “L”?
The “L” means that the washer is light and half the thickness of the original washer without the “L” designation.
What is the purpose of a Light Washer?
These washers are used for aligning the Cotterpin Hole with a Castellated Nut.
How would you identify a washer?
By measuring the minor diameter.
What is the minor diameter of a washer?
Minor diameter is the inner hole of a washer.
