Challen, Paul C.  1967- <br/><br/>
Get to know screws /  [book] 

 - New York, NY :  Crabtree Pub. Company,  2009. 
 - 32 p. :  col. ill. ;  29 cm. 
 - Get to know simple machines .
<br/><br/> Includes index. 
<br/><br/>Screws and simple machines -- The basic design -- How screws work -- Making work easier -- Fastening and joining -- How a screw fastens -- Other uses of screws -- A screw as a drill -- Screws and screwdrivers -- Do i need a screwdriver? -- Look out for that pitch! -- Calculating pitch -- Working together -- Glossary. 
<br/><br/><label>ISBN: </label>9780778744863 (pbk. : alk. paper) 9780778744696 (reinforced library binding : alk. paper) 
<br/><br/><label>LCCN: </label>2009004586 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Screws
<br/><br/><label>LC Class. No.: </label>TJ1338  / .C44 2009 
<br/><br/><label>Dewey Class. No.: </label>621.8 CHA