UYX154GAS #12| 80| 032 Coverhem Needles

The UYx154GAS (also known as the 151x21 or UY154GAS) is a specialized industrial needle system uniquely characterized by its curved blade. It is exclusively used in overlock (serger) and overseamer machines that require a curved needle path to form the stitch.

Key Technical Specifications
Unlike the straight needles used in most industrial machines, the UYx154GAS is curved to "catch" fabric layers precisely during the overlock process.
Shank Diameter: 2.02mm.
Shank Type: Flat shank at 270 degrees. This flat side ensures the curved needle is always installed at the exact radial angle required for the looper to pick up the thread loop.
Length to Eye: 31.6mm.
Overall Length: 36.7mm.
Equivalent Systems: 151x21, 154G, SY1431, UOX154, 06:60.

Point Style: The RG Point
Most UYx154GAS needles feature an RG point (Normal Round Point with a Small Ball).
Function: This point gently pushes fibers aside rather than piercing them, which protects both knitted and woven fabrics from damage.
Versatility: It is considered the standard for chainstitch, overlock, and even some specialized button-sewing or embroidery applications.

Machine Compatibility
This needle system is a staple for specific vintage and modern industrial overlockers, particularly those designed for high-speed seaming:
Union Special: Primarily the 39500 and 39600 class overlockers.
Pegasus: E56, E256, and DCR series.
Singer: 990B, 991B, 993BX, and 460.
Consew: 286 and 296.
Pfaff: 3545 and 3803