Locking devices and joining techniques

Match the following

• High tensile bolt

• 
• Nylock nut

  (Simmonds nut)

• 
• Nut

• 
• Castellated nut

• 
• Cap screw (allen head)

• 

What is the primary purpose of using a castellated nut and split pin in mechanical assemblies?

• To increase the strength of the nut

• To prevent the nut from loosening under vibration

• To provide a decorative appearance

• To enable quick disassembly of components

Nylock nuts must only be used ​ (a)   and ​ (b)   to manufacturer specification.

• once
• torqued
• twice, loosened
• never, over-tightened
• always, under-torqued

Match the following

• Set screw

• 
• Self tapping bolt

• 
• Plain washer

• 
• Countersunk screw

• 
• Pop rivet

• 

Match the following

• Repair washer

• 
• Woodruff key

• 
• Split pin

• 
• Shakeproof washer

• 
• Spring washer

• 

Match the following

• Clevis pin

• 
• Split dowel

  (roll pin)

• 
• Double lock nut

• 
• Tab washer

• 
• Locking fluid

• 

Match the following

• Locking wire

• 
• Locating dowels

• 
• Riveting

• 
• Tab washer

• 
• Woodruff key

• 

Match the following

• Shrinking

• 
• Soldering

• 
• Bonding (adhesives)

• 
• Tab washer nut (driveshaft)

• 
• Brazing

• 

What is the primary purpose of locating dowels in an assembly?

• To hold parts together under tension

• To transfer torque between components

• To accurately align and position components

• To reduce noise and vibration

Which type of rivet is most commonly used in applications where access is only available from one side of the workpiece?

• Solid rivet

• Tubular rivet

• Blind rivet

• Split rivet