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Threading. What is a Thread?. The raised helical rib going around a screw . There Are Two Types of Threads. UNC UNF. Unified National Course Unified National Fine. How do we thread a hole?. First we need to determine what size hole we need to thread.
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What is a Thread? The raised helical rib going around a screw
There Are Two Types of Threads UNC UNF Unified National Course Unified National Fine