So Fine! Thread #431 Navy - Spool

Name: So Fine! Thread #431 Navy - Spool
Brand: Piece N Quilt
SKU: SKU-b0d2361151a4
Price: 4.78 USD
Availability: InStock
Rating: 4.4 (5 reviews)

So Fine! Thread #431 Navy - Spool - Main image

$4.78 ~~$6.37~~ In stock

Category: Thread

So Fine! #50 is a #50/3 lint-free and extra smooth all purpose polyester thread. Each spool has 550 yards. Excellent for sewing, serger, bobbin thread and quilting.

Features

Thread Weight: 50 wt. 3-ply
Fiber: Polyester
Thread Characteristics: Lint free, smooth, and blends well

Recommended for quilting and sewing. May also be used as bobbin thread.

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Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.4 / 5 · 5 reviews)

Alexander ★★★★★ Oct 20, 2026

Finally, a polyester thread that doesn't fray or leave lint all over my machine. The 550-yard spool has been perfect for my serger, and the smooth finish glides through layers without breaking.

Edward H. ★★★★★ Oct 18, 2026

I was skeptical about polyester thread for my serger, but this 50-weight 3-ply runs through without a single lint ball. The 550-yard spool is lasting me through several projects, and the navy color is rich and consistent.

Leo ★★★★☆ Oct 21, 2026

I was a bit worried the 50 weight would be too thin for my serger, but it runs through smoothly without any shredding. The 550 yards per spool is generous for the price, and the navy color is a true, deep shade.