Ch. 9ThreadsCM1030

Ch. 9ThreadsCM1030 - plotted drawing. Use when it is...

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Threads
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Threaded Fasteners Used to hold parts together Used to adjustment parts with reference to one another Used to transmit power
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Screw Thread Terminology
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Thread Pitch
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Thread Series Number of thread per inch 5 types NC Coarse thread for general purpose holding. NF Fine thread used extensively in aircraft and auto construction 8N All diameters have 8 threads per inch. Used on bolts for high pressure pipe applications. 12N All diameters have 12 thds/in. Used in boiler work and in machine construction. 16N All diameters have 16 thds/in. Used on adjusting collars and other applications where thread must have fine adjustment regardless of diameter.
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Thread Notes
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Metric Thread Notes
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Right & Left Hand Thread
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Detailed Thread Representation Used when diameter of thread is 1” or larger on the
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Unformatted text preview: plotted drawing. Use when it is important to show the thread and imply its function. Simplified & Schematic Representation (External) Imply depth of thread with hidden lines for simplified representation Use alternating long thin & short thick lines to represent root & crest lines in schematic representation Threads in Section Drilled & Tapped Holes Summary Use detailed, schematic, or simplified representation to show thread in drawings. Detailed representation is used for thread shown over 1 in diameter on the plotted drawing. Schematic or simplified representation does not show the thread pitch & depth to scale. They just give the appearance of thread in the drawing. Use schematic or detailed representation to show springs....
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This note was uploaded on 05/03/2008 for the course CM 1030 taught by Professor Karla? during the Spring '06 term at LSU.

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Ch. 9ThreadsCM1030 - plotted drawing. Use when it is...

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