countersunk rivet การใช้

• During early WWII, metalworking technology reached the point where countersunk rivets could be used for aiplane construction.
• A flush rivet takes advantage of a countersink hole; they are also commonly referred to as countersunk rivets.
• One model of fighter airplane got a 100mph increase in top speed just through being redesigned to use countersunk rivets .-- talk ) 23 : 18, 22 May 2008 ( UTC)