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A close-up of the ECM C309900164 E61 Grouphead Front Screw - M6x10, showing its cylindrical head and threaded shaft, often used as a front screw for E61 groupheads, photographed on a white background. © 2025 1st-line.com

ECM C309900164 E61 Grouphead Front Screw – M6x10

$1.99
A close-up view of the ECM C309900131 E61 Allen Screw M8x31, featuring threads on both ends and a smooth unthreaded section in the middle. © 2025 1st-line.com

ECM C309900131 E61 Allen Screw M8x31

$1.99
Close-up of the ECM B7479947 E61 Lever Washer, a circular metal lock washer with outwardly bent, serrated teeth designed to prevent nuts and bolts from loosening. © 2025 1st-line.com

ECM B7479947 E61 Lever Washer

$1.99
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