Premium Replacement Thread Guide Screw (Part #233) – For Singer 31 & 331K
Maintain the structural integrity of your thread handling system with this Premium Replacement Thread Guide Screw (Part #233). Specifically designed for the Singer 31 and 331K series, this precision-machined fastener is essential for securing the thread guides to the needle bar or machine head, ensuring they remain vibration-free during high-speed industrial operation.

Key Performance Features
Precision-Cut Threads: Engineered with the exact pitch and diameter required for Singer Industrial machines, ensuring a perfect fit without stripping or damaging the internal housing.

Vibration Resistance: Built to withstand the constant reciprocating motion of the needle bar, keeping your thread guides firmly in place to prevent timing errors.

Hardened Industrial Steel: Crafted from high-tensile steel with a protective finish to resist corrosion and wear from frequent adjustments.

Low-Profile Head: Designed to sit flush or at the correct height to avoid interfering with the thread path or other moving mechanical parts.

✔ Free shipping on orders over $99
✔ Ships from our USA (Georgia) office when in stock
✔ Weekly restocking from Japan, China, Bangladesh, and Turkey warehouses
✔ 3–7 business days handling time
✔ Compatible with multiple industrial sewing machines
✔ Carefully inspected before shipment

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⚠️ Please confirm your machine model before ordering