Source-backed model reference · US

Singer HD 4432 / Heavy Duty 4432 / 4432 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

• 70–80 (9–11) → Lightweight fabrics: fine cotton, voile, silk, muslin, interlock, tricot, jersey, crepe, chiffon
• 80-90 (11-14) → Medium weight fabrics: quilting cotton, satin, double knit, lightweight wool, rayon, lightweight linen
• 90 (14) → Medium weight fabrics: firm woven, medium weight linen, cotton/polyester blend, terrycloth, chambray
• 100 (16) → Heavy weight fabrics: canvas, wool, denim, home decor, fleece, heavy knit
• 110 (18) → Heavy weight fabrics: coat weight wool, upholstery fabrics

Insert and replace

Push the new needle upwards into the needle clamp with the flat side away from you.

Twin-needle or specialty notes

For twin needle stitching, set the needle position to center. Built-in needle threader cannot be used for twin needles

Other manual notes

• Needles should be changed every 6-8 hours of actual stitching time.
• Needle threader is designed for size 70-110 needles; not for size 60 or smaller, wing or twin needles.

Manufacturer source

Singer HD 4432 Instruction Manual ↗

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

Check another machine · Needle size chart