During the races at Las Vegas Motor Speedway last weekend, loose lug nuts were a major issue that required several drivers to make an additional trip down pit road to tighten up lug nuts.

When NASCAR officials handed down the penalties on September 28, a total of six teams were charged with having at least one lug nut improperly secured during the post race inspection process.

The biggest penalty issued by NASCAR was to the Stewart-Haas Racing number four car driven by Kevin Harvick. It was found to have two lug nuts improperly secured and as a result, crew chief Rodney Childers has been fined $20,000 and suspended from the race at Talladega this weekend. Stewart-Haas has named Greg Zipadelli as the crew chief for Harvick’s car this weekend.

The remaining four Cup Series teams had their crew chiefs fined $10,000 for a single lug nut improperly secured. The teams were:

The Hendrick Motorsports number five car driven by Kyle Larson with Cliff Daniels as crew chief
The Joe Gibbs Racing number 18 car driven by Kyle Busch with Ben Beshore as crew chief
The Chip Hanassi Racing number 42 car driven by Ross Chastain with Phil Surgen as crew chief
The Trackhouse Racing number 99 car driven by Daniel Suarez with Travis Mack as crew chief

There was just one car who did not have all 20 lug nuts properly secured in the Xfinity Series – the JR Motorsports number one car that was driven by Josh Berry. Crew chief Mike Bumgarner was fined $5,000 for the infraction. The penalty does not affect Berry’s winning the race on Saturday.