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Fasteners
Metal
Composits / Corrosion
Misc.
Acronyms
100
It is used to repair damaged threads inside a part.
What is heli-coil?
100
This process produces a hard, wear resistant surface over a softer but strong and tough core.
What is case hardening?
100
Two types of fiberglass include S-glass and this...
What is E- glass?
100
Bolts are usually manufactured with this class fit for threads.
What is class 2?
100
NC
What is National Course?
200
This indicates the tolerance / clearance between the threads of a bolt and nut.
What is the class of thread fit?
200
The intimate mixture of two or more metals.
What is an alloy?
200
Honeycomb, Foam, Wood.
What is core material?
200
This can be used to hold an assembly together with no torque pressure.
What is a roll pin?
200
NF
What is National Fine?
300
On a SAE 1/2 X 13 bolt, the 13 indicates this.
What is pitch? (Threads per inch)
300
It happens when a metal part is subject to rolling, hammering, forging, or bending at room temperature.
What is cold worked or work hardened?
300
Visual, Tap, NDT
What are methods of inspection?
300
F X L
What is Torque?
300
SAE
What is Society of Automotive Engineers?
400
2 X bolt diameter.
What is Edge Distance (ED)
400
This is done to "toughen" metal.
What is temper?
400
It occures when dissimilar metals are in contact with each other over a period of time.
What is Galvanic corrosion?
400
A bolt is streached to this percent of it's elastic limit when tightened properly.
What is 70%
400
ANSI
What is American National Standards Institute?
500
A bolt head has three dashes, its grade is this...
What is 5?
500
This process will make metal softer.
What is anneal?
500
This type of corrosion can be the result of fast fluid flowing past a stationary object.
What is erosion corrosion?
500
This type of pin should be used to protect equipment from overload damage.
What is a solid shear pin?
500
AFBG
What is the American Federation of Bolt Grading?