OEM PART · drive

170021 Hand-wheel snap ring

Documented for Singer 503A

Review complete

Documented model fitments

Singer 503A

Confirmed document row · independently blind-reviewed · PDF page 4 · Numerical List of Parts — snap-ring rowList of Parts — Machine No. 503A · external source, link-only

Related drive OEM records

2022 · Clamp stop motion flanged bushing pin
170017 · Hand wheel
45311 · Stop-motion bushing