Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
|
What is a Crest? |
The peak and or plane of a screw thread. |
|
|
What is a Root? |
Bottom of a thread, where it connects to the general shaft. |
|
|
What is a Major Diameter? |
Largest Diameter of a thread from crest to the opposing crest. |
|
|
What is Pitch Diameter? |
A measurement that equals the same distance between two sides of a crests to a segment between a thread side to an opposing one. |
|
|
What is a Minor Diameter? |
The diameter of the shaft from root to opposing root. |
|
|
What is a Pitch? |
The measurement from the crest of one thread to another. |
|
|
What is a Lead? |
How far a thread advances when turned a full 360 degrees. |
|
|
What is a Thread Form? |
The shape of a thread, which carries from squares, triangles and semi-spheres. |
|
|
What is a Unified Thread? |
A triangular thread form. |
|
|
What are the Knuckle Threads? |
Semicircle , square and Acme Stub thread forms. |
|
|
What are the thread levels of quality? |
Unified Course, Unified Fine, Unified Extra Fine. |
|
|
What are thread classes and the different types? |
1-3 = quality of the thread A is for external B is for external |
|
|
What are multi-start threads? |
Thread lines that are cut off at the beginning of the thread. |
|
|
What are left and right hand threads? |
Left are clockwise and right is counter clockwise. |
