Source-backed model reference · US

Brother ST371HD 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

• Medium weight fabrics (broadcloth, taffeta, flannel, gabardine) → 75/11–90/14
• Thin fabrics (lawn, georgette, challis, satin) → 65/9–75/11
• Thick fabrics (denim, corduroy, tweed) → 90/14–100/16 (100/16 with #30 thread)
• Stretch fabrics (jersey, tricot) → Ball point needle (gold colored) 75/11–90/14
• Easily frayed fabrics → 65/9–90/14
• Transparent nylon thread → 90/14 to 100/16

Insert and replace

With the flat side of the needle toward the back of the machine, insert the needle until it touches the needle stopper, then tighten the needle clamp.

Twin-needle or specialty notes

Twin needle (2.0/75 needle), part code X57521-021; stitch width not set above "2.5"; foot J. Listed in the accessories table; use only twin needles made for this machine (2.0/75 with a 2 mm width)

Other manual notes

• Accessories list a needle set (90/14 needle).
• Factory recommended ball point needle is "HG-4BR" (Organ).

Manufacturer source

Brother ST371HD Operation Manual (English/Spanish) ↗

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

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