Source-backed model reference · US

Singer Heavy Duty 44S / 44S needle size

The exact machine name and needle system determine fit. This page transcribes the cited manufacturer manual and keeps fabric use, insertion and specialty-needle notes together.

Fabric and size chart

• 9-11 (70-80) → Lightweight fabrics: thin cottons, voile, silk, muslin, interlocks, cotton knits, tricots, jerseys, crepes
• 11-14 (80-90) → Medium weight fabrics: cotton, satin, kettlecloth, sailcloth, double knits, lightweight woolens
• 14 (90) → Medium weight fabrics: cotton duck, woolen, heavier knits, terrycloth, denims
• 16 (100) → Heavyweight fabrics: canvas, woolens, outdoor tent and quilted fabrics, denims, upholstery (light to medium)
• 18 (110) → Heavy woolen, overcoat fabrics, upholstery fabrics, some leathers and vinyls

Insert and replace

The flat side of the shaft should be towards the back.

Twin-needle or specialty notes

Twin needle (optional accessory, not supplied). For twin needle stitching, needle position is middle (Three Needle Position Dial)

Other manual notes

• Replace needle often (approximately every other garment) and/or at first thread breakage or skipped stitches.
• SINGER 2032 leather needles: 12 (80) to 18 (110).

Manufacturer source

Singer Heavy Duty 44S Instruction Manual ↗

Source market: English/Spanish/French · Checked October 20, 2026. Verify the full model label, fabric and current manual before sewing.

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