Needle, bobbin & presser foot reference
Needles, bobbins, feet and other details for this model. Check the requirements before choosing parts.
Before choosing a part
Start with these documented details. Read the requirements with each answer before choosing a needle, bobbin or foot.
Not yet confirmed here: Manufacturer accessory group, Presser-foot shank type, Foot holder / mount, Foot interface / generation, Bobbin type / class, Bobbin material, Bobbin diameter, Bobbin height, Hook type, Needle sizes by fabric and use, Maximum stitch / zigzag width, Feed system, Bobbin loading direction. What is still to confirm →
Other names, regional versions and related models have not been confirmed here. A shared manual, product line or accessory group does not identify the machine's family.
Switch power off and follow the full illustrated procedure. A holder and foot pin do not establish standardized shank height or third-party adapter fit.
Documents and page references →Follow the complete procedure for this exact model printed on the shared manual; winding does not establish bobbin class or equivalence.
Documents and page references →Retain the fabric and thread conditions, the explicit 2020 stretch-fabric exclusion and the table conversion discrepancy. No corrected conversion or universal size range is asserted.
Documents and page references →Power off and unplug; use the illustrated removal and reassembly order. This cleaning answer does not establish an oil type, location, amount or interval.
Documents and page references →Keep the needle fully raised and power off; follow the complete illustrated routing procedure. No bobbin class or hook system is established.
Documents and page references →Switch the machine off before changing the needle and follow the full illustrated procedure.
Documents and page references →Manuals, parts books & more
Publisher links below distinguish a matched file from a listing.
Choose the document for your task: an instruction manual, service manual, parts list and accessory guide answer different questions.
About this document & page references →
InstructionRead the source document ↗
We checked that this file matched the source used here on 2026-10-12. The publisher may later replace its file.
Read the model-specific requirements with each answer before choosing parts.
The OEM table assigns SINGER 2020 sharp needles to natural-fiber fabrics and SINGER 2045 ball-point needles to knits and stretch fabrics, including natural and synthetic fibers. It explicitly does not recommend 2020 for stretch fabrics.
Insert the needle as far upward as possible with the flat side of its shaft facing the back, then tighten the clamp screw.
Route the thread through the bobbin guide and clockwise around the tension discs, thread the bobbin, move its spindle right, wind to the automatic stop, then move the spindle left and remove the bobbin.
With the needle fully raised and power off, insert the bobbin so it turns counterclockwise, route the thread through the case tension path, leave about 15 cm, and replace the cover.
With power off, place the ordinary foot below its holder and lower the holder until its opening is above the foot pin; the foot engages automatically. To remove it, raise the foot with the presser-foot lifter and press the holder release lever.
Specifications apply to the named model and document edition. Read any setup, fabric or safety requirements with the answer.
Power off and unplug the machine, remove the needle plate and bobbin case as shown, brush the feed teeth and inside of the bobbin-case area, then reinstall the case and plate in the documented position.
Use the full source procedure and its safety precautions. A short referenced answer is not a substitute for service documentation or qualified electrical/mechanical repair.
Service-manual availability and service-only procedures remain unestablished unless separately cataloged and reviewed.
The original source author’s manual research is reused here. Keep each model’s needle chart, fabric, thread and size restrictions, source conflicts and safety instructions separate. Related models do not establish replacement compatibility.
An unanswered question does not mean a part is incompatible. We have not confirmed enough information to recommend it.
Presser foot — Presser-foot shank · manufacturer wording: Not established Full recorded limit & conditions →
Presser foot — Third party adapters: Not established Full recorded limit & conditions →
Bobbin — Class system: Not established Full recorded limit & conditions →
Bobbin — Dimensions profile material: Not established Full recorded limit & conditions →
Bobbin — Hook type: Not established Full recorded limit & conditions →
Ownership — Lubrication: Not established Full recorded limit & conditions →
Other names, regional versions, production history, further specifications and documents are not fully covered here. Their absence is not a “none exist” finding.
These are research questions, not claims that the missing relationship exists.
Each answer links to its exact evidence passage below. Open a reference to see the document and page. These links identify the source; they do not include the full manual or its diagrams. Document access is consolidated in the OEM library above.
Published by SINGER
Checked against the document text.
Document and available links →About this document →PDF page 1
Open the source document · PDF p. 1 ↗ About this document link
The manual cover explicitly lists 4411, 4423 and 4432. Each accepted machine is compiled independently; 5511, 5523 and Facilita Pro receive no profile fanout.
PDF page 8
Open the source document · PDF p. 8 ↗ About this document link
Shared-manual bobbin-winding procedure for each explicitly listed model.
PDF page 9
Open the source document · PDF p. 9 ↗ About this document link
Shared-manual bobbin insertion and thread-routing procedure.
PDF page 16
Open the source document · PDF p. 16 ↗ About this document link
Ordinary presser-foot attachment and release procedure; no standardized shank inference.
PDF page 17
Open the source document · PDF p. 17 ↗ About this document link
Needle installation orientation and insertion depth for the listed manual cohort.
PDF page 18
Open the source document · PDF p. 18 ↗ About this document link
Condition-preserving needle-model selection table; no singular universal needle type is inferred.
PDF page 30
Open the source document · PDF p. 30 ↗ About this document link
Owner cleaning procedure; the heading alone does not establish an oil type or interval.
Alex Shick · Founder and editor. Corrections managed by Alex Shick.
This Singer Heavy Duty 4423 guide is based on documents, with AI assistance to organize the information. We have not tested or repaired the machine.
Check the document edition with each answer. A source review date is not a machine inspection date or a promise that the manual is the latest edition.
Contact the SewIndex team or report a correction ↗
The correction address has been tested and its monitoring confirmed. We cannot promise a response or accept every suggested change.
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Answers come from the documents named on this page. They describe those editions, and may not cover later changes to the machine or manual.