8603 Singer 29K Shuttle Hook Patcher Machine Shuttle Hook. This is the Standard size shuttle hook that the spool sits in. The shuttle hook comes complete with a spool & thread tension spring. The job of the shuttle hook is to pick the up from the needle & form a stitch. Part Number 8603 Bobbin for shuttle is Part No 8604 Shuttle hook 8654 is the same size as 8603 but is supplied without spool & thread tension spring For tension spring use number 8611 and regulating screw use number 662F. Need Help or Advice? Unsure of exactly what you need? Or can’t see your parts here? Please call one of our Engineers who will be delighted to help. Internal Parts are Still Available and can be supplied on a ‘Special Order’ Check out the PARTS BOOK or Please Contact Us for Price & Availability.
