163721-656
Buttonhole knob (Touch & Sew 600 series) for Singer 600, 600E Touch & Sew, 603, 604 and 18 more
Original part (OEM)
Not checked yet
PorkForge replacement
Not made yet
Part facts
- Original part number
- 163721-656R1
- Manufacturer
- Singer
- Part type
- Knobs · Control knobs and handles
- System
- Operator controls
- Notes
- Buttonhole control knob for the Singer 600 Touch & Sew family (600 to 649). Price and stock were not readable on the page.
- Last reviewed
- Oct 28, 2026 · record pf-sew-00013
Dimensions How to measure this part
Fits these machines
| Model | Years | Notes | Evidence |
|---|---|---|---|
| Singer 600 | Not recorded | — | Reported 1 |
| Singer 600E Touch & Sew | Not recorded | — | Reported 1 |
| Singer 603 | Not recorded | — | Reported 1 |
| Singer 604 | Not recorded | — | Reported 1 |
| Singer 620 | Not recorded | — | Reported 1 |
| Singer 625 | Not recorded | — | Reported 1 |
| Singer 626 | Not recorded | — | Reported 1 |
| Singer 628 | Not recorded | — | Reported 1 |
| Singer 629 | Not recorded | — | Reported 1 |
| Singer 630 | Not recorded | — | Reported 1 |
| Singer 630E | Not recorded | — | Reported 1 |
| Singer 635 | Not recorded | — | Reported 1 |
| Singer 635E | Not recorded | — | Reported 1 |
| Singer 636 | Not recorded | — | Reported 1 |
| Singer 638 | Not recorded | — | Reported 1 |
| Singer 639 | Not recorded | — | Reported 1 |
| Singer 640E | Not recorded | — | Reported 1 |
| Singer 645 | Not recorded | — | Reported 1 |
| Singer 646 | Not recorded | — | Reported 1 |
| Singer 648 | Not recorded | — | Reported 1 |
| Singer 648E | Not recorded | — | Reported 1 |
| Singer 649 | Not recorded | — | Reported 1 |
Where to find one today
Can this part be made again?
EligiblePhysical replacement
Hand control knob. No dimensions published.
Candidate materials: PETG, ASA (confirmed by test-fitting).
EligibleSTL / FreeCAD file
Can be offered as a printable file and an editable FreeCAD model once the measurements are verified.
Sources
Not affiliated with or endorsed by Singer or its successors. The name is used only to identify compatibility. Part numbers are shown for reference. Check fit against your own machine. Spot a mistake?
Verification checklist (3 of 8 met)
- ✕ OEM part number not yet verified from an OEM or dealer source
- ✕ Cited by one website only, and not an OEM or dealer source
- ✓ At least one compatible model with a source
- ✕ 0 kinds of fact beyond the name (none); 3 needed
- ✕ Original availability not yet checked
- ✓ Text and title are distinct
- ✓ No editorial hold
- ✕ Not yet reviewed and signed off for search
Related parts
| Part no. | Part | Make | Fits | Original | PorkForge | Sources |
|---|---|---|---|---|---|---|
| 174122-656 | Bed cover (Touch & Sew 600 series) | Singer | 600, 600E Touch & Sew, 603, 604, 610 +21 more | Not checked | Research only | 1 |
| 163436 | Stitch selector knob (Touch & Sew 600 series) | Singer | 600, 603, 604, 620, 625 +12 more | Not checked | Research only | 1 |
| 163950 | Stitch length regulator (Touch & Sew 600 series) | Singer | 600, 620, 625, 628, 629 +22 more | Not checked | Research only | 1 |
| 1100263 | Spool tension knob | Abu Garcia | Ambassadeur | No longer available | Research only | 1 |
| 1100491 | Spool tension knob (gold) | Abu Garcia | Ambassadeur | No longer available | Research only | 1 |
| 1145798 | Drag knob (gold) | Abu Garcia | 3025 | No longer available | Research only | 1 |
| 1145803 | Front drag knob | Abu Garcia | 4535 | No longer available | Research only | 1 |
| 1145823 | Drag knob | Abu Garcia | 4335, 4340 | No longer available | Research only | 1 |