Today’s Plan
description
Transcript of Today’s Plan
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Today’s Plan
Fasteners
Threading
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Fasteners
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What is a Fastener?
A hardware device that mechanically joins or affixes two or
more objects together
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Fasteners can be categorized as follows:
ScrewsSet ScrewsSelf Tapping Screws Bolts
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Screws
Screws pass through one part and thread into another
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Screws
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Screws
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Screws
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Set Screws
A type of screw generally used to secure an object within another
object
The screw passes through a threaded hole in the outer object and is tightened against the inner
object
Set Screws are used to secure things such as pulleys, gears &
shafts
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Set Screws
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Self Tapping Screws
Screws that will cut their own threads in a predrilled hold – If the
hole is the appropriate size
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Self Tapping Screws
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Bolts
Threaded fasteners that hold parts together by squeezing them
between the head on one end and a nut on the other
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Bolts
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Assignment
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Threading
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What is a Thread?
The raised helical rib going around a screw
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There Are Two Types of Threads
Unified National Course Unified National Fine
UNC UNF
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How do we thread a hole?
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First we need to determine what size hole we need to
thread
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Once we have drilled the appropriate sized
hole
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We choose the appropriate tap
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The Drill & Tap Process
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