Source-backed model reference · US

Singer 14SH644 / 14SH654 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

• Light weight (lawn, organdy, voile, crepe) → #11
• Medium weight (muslin, seersucker, satin, gabardine, broadcloth) → #11, #14
• Heavy weight (oxford, denim, tweed, corduroy, serge) → #14
• Knit: tricot → #11; jersey → #11, #14
• Wool (woven, knit) → #11, #14

Insert and replace

Hold the needle with the flat surface to the back.

Other manual notes

• In an emergency, standard Singer needle #2020 may be used; skipped stitches may occur unless tension is readjusted.
• Spec: rolled hemming Singer Cat. No. 2022 #11; ordinary overedge #11, #14.

Manufacturer source

Singer 14SH644 Operator's Guide ↗

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

Check another machine · Needle size chart