With the labor strike at Boeing's (BA) now entering its third week, Cramer said the real loser is not the aircraft maker or its employees but the company's suppliers. He put Boeing, along with all of its suppliers, squarely in the Thursday "Sell Block" segment.

He said that Spirit AeroSystems (SPR), which derives 87% of its sales from the now idled Boeing, has already cut its workforce to a three-day work week and said layoffs are looming. The company will see a 6% hit to 2008 earnings if the strike lasts a month.

Next on the list is Rockwell Automation (ROK), which depends on Boeing for 14% of its sales. The company has just laid off 80 people.

Third is Cramer favorite, Precision Castparts (PCP). Cramer said the company gets 17% of its sales from Boeing and will take a 1.7% earnings hit if the strike lasts a month.

Finally, Cramer said both Goodrich (GR), maker of aircraft wheels and brakes, and composite maker Hexcel (HXL), are at risk of big losses from a lengthy strike.

Finally, Cramer said both Goodrich (GR), maker of aircraft wheels and brakes, and composite maker Hexcel (HXL), are at risk of big losses from a lengthy strike.