NASCAR has suspended the crew chief for Kevin Harvick for an improperly installed lug nut at Indianapolis Motor Speedway.

Rodney Childers will not appeal the suspension or his $20,000 fine. He will miss Sunday's race at Pocono Raceway.

Childers is the fifth crew chief suspended over a lug nut rule instituted by NASCAR earlier this season. The rule was put in place because teams were not applying all five lug nuts properly in an effort to have faster pit stops.

Other penalties issued Wednesday by NASCAR were written warnings for twice failing pre-race inspection to the teams for Kasey Kahne, Paul Menard and Matt DiBenedetto.

Written warnings also were given to the teams of Kurt Busch and Aric Almirola for twice failing template inspection before pre-qualifying.