Baltero, Bernie F.  <br/><br/>
Development of adjustable allen key/  
Bernie F. Baltero, John Reyner P Baņez, Joshua L. Bersalona, Jherome D. Palarca, and Hans Yuri V. Pinca .-- 
 - Manila:   Technological University of the Philippines,   2023. 
 - xi, 94pages:   29cm.   +1 CD-ROM (4 3/4in.)  
<br/><br/> Thesis (undergraduate)  
<br/><br/>College of Industrial Technology .-- 
<br/><br/>Includes bibliography:  
<br/><br/> This research is about creating an adjustable Allen key that can work with different sizes<br/>of hexagonal sockets. The prototype of the tool has seven parts, including an adjustment<br/>knob, a case, a spiral plate, three adjustable jaws, and a thumbscrew or handle. To test the<br/>effectiveness of the tool, first, it was flame hardened until 870 degrees Celsius and later on<br/>subjected to Brinell Hardness Test to get the HRC value. The prototype was also tested for<br/>torque by tightening different sizes of hexagonal sockets with a specific level of force and<br/>then loosening using the tool. The results showed that the prototype was able to expand up<br/>to 16mm and was successful in loosening the hexagonal sockets. To evaluate the prototype,<br/>30 evaluators rated it on different criteria such as functionality, workability, durability,<br/>aesthetics, economy, and safety. The overallrating was 4.24 out of 5, which indicates that<br/>the prototype worked well. This research offers a potential solution for a more versatile<br/>and efficient tool for working with hexagonal socket fittings. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mechanical engineering 
<br/><br/><label>LC Class. No.: </label>BTH TJ 145  / B35 2023