Check the conditions alongside each answer. Foot attachment, shank type and adapter requirements are separate; one does not establish universal accessory fit.
Bobbins and hook
Winder sewing position
conditional
Return the bobbin-winder spindle to its left sewing position before sewing; the right position is for winding.
This operating step does not establish bobbin size, class or substitute compatibility.
With power off and the needle raised, insert the bobbin with its thread running counterclockwise, draw it through slit A and notch B, then replace the cover.
This describes the exact machine's insertion procedure, not a third-party bobbin interchangeability rule.
For natural woven fabrics, the Singer chart lists 2020 standard sharp needles, sizes 9 (70) through 18 (110); it does not recommend them for double knits.
Fabric-specific chart guidance, not an exclusive universal needle-system assertion.
With power off, fasten the presser-foot shank to the presser bar with its screw; lower the shank cut-out directly over the pictured foot pin so the foot engages.
Own-foot mechanism only; no standardized shank height, adapter, optional part or third-party fit is established.
Own foot attachment mechanism: With power off, fasten the presser-foot shank to the presser bar with its screw; lower the shank cut-out directly over the pictured foot pin so the foot engages.
presser shank screw
until the cut-out (c) is directly above the pin (d).
Turn power switch to off
Insertion orientation: With power off and the needle raised, insert the bobbin with its thread running counterclockwise, draw it through slit A and notch B, then replace the cover.
running counterclockwise direction (arrow).
Pull the thread through the slit (A).
until it slips into the notch (B)
Turn power switch to off
Woven fabric selection: For natural woven fabrics, the Singer chart lists 2020 standard sharp needles, sizes 9 (70) through 18 (110); it does not recommend them for double knits.
Knit fabric selection: For the listed knits and synthetic or woven fabric uses, the Singer chart lists 2045 semi-ball-point needles, sizes 9 (70) through 18 (110).
SINGER ® 2020
SINGER ® 2045
Not recommended for double knits.
Knits-polyesters, interlocks, tricot, single and double knits.
Domains with cited compatible items: presser foot (8)
bobbin
Core answer answered
needle
Reviewed — not established
presser foot
8 cited items; core not established
Unknown is not incompatible. A missing answer means the current official evidence does not support one yet.
Specifications
Documented machine facts
Multiple cited representations for one field share one row. SewGraph preserves every value and exact proof passage; it does not guess which representation is “raw” or “normalized” when the public projection does not label that distinction.
A two-hop result joins the machine’s official accessory-group membership to the OEM part matrix. Open the evidence to inspect both hops.
8 relationships shown
presser foot · 8
CLEAR OPEN TOE FOOT 250059696
compatibletwo-hop OEM matrix
Why this fits
Two cited hops: this machine is in SINGER Accessory M/C Code · SINGER M/C Code MB, and the OEM matrix lists this part for that group. Edition 2022. Region global_en. Applies to presser foot only.
Two cited hops: this machine is in SINGER Accessory M/C Code · SINGER M/C Code MB, and the OEM matrix lists this part for that group. Edition 2022. Region global_en. Applies to presser foot only.
Two cited hops: this machine is in SINGER Accessory M/C Code · SINGER M/C Code MB, and the OEM matrix lists this part for that group. Edition 2022. Region global_en. Applies to presser foot only.
Two cited hops: this machine is in SINGER Accessory M/C Code · SINGER M/C Code MB, and the OEM matrix lists this part for that group. Edition 2022. Region global_en. Applies to presser foot only.
Two cited hops: this machine is in SINGER Accessory M/C Code · SINGER M/C Code MB, and the OEM matrix lists this part for that group. Edition 2022. Region global_en. Applies to presser foot only.
Two cited hops: this machine is in SINGER Accessory M/C Code · SINGER M/C Code MB, and the OEM matrix lists this part for that group. Edition 2022. Region global_en. Applies to presser foot only.
Two cited hops: this machine is in SINGER Accessory M/C Code · SINGER M/C Code MB, and the OEM matrix lists this part for that group. Edition 2022. Region global_en. Applies to presser foot only.
Two cited hops: this machine is in SINGER Accessory M/C Code · SINGER M/C Code MB, and the OEM matrix lists this part for that group. Edition 2022. Region global_en. Applies to presser foot only.
Group codes are namespaced to the issuing OEM program and apply only to the cited domains. They are not machine series and do not prove compatibility outside those domains.
Open the exact OEM PDF page or captured HTML edition when a safe destination exists; otherwise SewGraph labels the OEM support-page fallback honestly.
Singer 44S product page (archived 2024-12-08)
product page
Open official source destination · 1 unique proof passage:Proof E3
Singer Heavy Duty 44S Instruction Manual
instruction manual
Open official source destination · 1 unique proof passage:Proof E4
Singer 2022 Accessory User Guide
accessory compatibility
Open official source destination · 1 unique proof passage:Proof E1
Evidence library
16 exact proof passages from 3 OEM documents
Every passage below says exactly what visible fact it proves. Repeated references to the same locator are counted once; identity evidence never counts as compatibility evidence.
Open exact proof passages · 16 unique proof passages
0 supported answers and 6 answers with conditions or remaining limits. Evidence coverage is not a probability of accuracy.
Unresolved owner questions (2)
Third party equivalence: Not established — Not yet verified: The reviewed manual pages do not establish substitute bobbin dimensions or interchangeability.
Third party fit: Not established — Not yet verified: The reviewed manual pages do not prove third-party presser-foot compatibility or adapter requirements.