"Linchpin" is a single by musical act Fear Factory

Fear Factory

Fear Factory is an American industrial metal band. Formed in 1989, they have released seven full-length albums and a number of singles and remixes. Over the course of their career they have evolved from a succession of styles, as well as steadily pioneered a combination of the styles death metal,...

 from their album Digimortal. It peaked at No. 31 on the Billboard Mainstream Rock chart.

Music video

The music video shows shots of machinery and what appears to be a polygraph machine intercut with footage of individual band members playing whilst at times being surrounded by smoke or doused in a white liquid. A picture of the Vitruvian Man

Vitruvian Man

The Vitruvian Man is a world-renowned drawing created by Leonardo da Vinci circa 1487. It is accompanied by notes based on the work of the famed architect, Vitruvius. The drawing, which is in pen and ink on paper, depicts a male figure in two superimposed positions with his arms and legs apart and...

, along with a rendition of Fear Factory's logo can be seen briefly at the end of the video superimposed over lead singer Burton C. Bell

Burton C. Bell

Burton Christopher Bell is an American musician. Bell is best known as the frontman of the metal band Fear Factory where he is the only consistent member. His singing style mixes clean vocals with death growls.-Fear Factory:...

.

Australian track listing

1. "Frequency"
2. "Linchpin"
3. "Machine Debaser"
4. "Demolition Racer"
5. "Invisible Wounds (The Suture Mix)"
6. "Replica (Live)"
7. "Edgecrusher (Live)"

Promotional CD track listing

1. Linchpin [LP Version] 3:24
2. Linchpin [Radio Edit] 3:01
3. Burton C. Bell "Linchpin" id 0:08
4. Dino Cazares "Linchpin" id 0:07
5. Burton C. Bell generic id 0:07
6. Dino Cazares generic id 0:04
7. Dino Cazares alternate "Linchpin" id with beeps 0:10
8. Dino Cazares x-rated id 0:10