Tsamouris, the Fastener Specialists©
Washington, DC, Metro has implemented new safety protocols following a derailment near Reagan National
Airport in September 2023. Investigations suggest the derailment was caused by a brake disc that had fallen
onto the track from another train due to loose bolts. The incident involved a 7000-series train with 43
passengers onboard, prompting a thorough inspection of Metro’s older rail cars.
Inspections revealed that approximately 6% of brake discs on Metro’s oldest cars had issues with loose or
defective bolts. In response, Metro now requires a torque check of bolts on its older cars every 60 days,
surpassing industry recommendations.
The derailment, which occurred when the 7000-series train hit a brake disc that had fallen from a preceding
3000-series train, damaged 310 feet (94 meters) of track and required extensive repairs. Metro workers had
to drill nearly 500 holes, install new studs, and replace over 240 rail fasteners to restore the track.
At Tsamouris, our commitment to providing top-tier bolts and fasteners reflects our dedication to public
safety and infrastructure integrity.