Are Class 15 and 15J Bobbins the same?

Definitely NOT interchangeable! They look almost identical, but class 15 bobbins have flat ends, while class 15J bobbins have slightly curved ends. Sometimes they appear to work interchangeably, but even if they fit into your sewing machine, there is a risk of them jamming your machine up and causing major damage.

What machines use 15J bobbins?

Singer 12 Class 15J Bobbins



This set of 12 Class 15J transparent plastic bobbins is for use in Singer Futura Embroidery Machines series 2600s, 3900s, 7400s, 8700s and Izek 1500 sewing machines.

What is a class J bobbin?

Also Known as 15 Class Bobbin & “J” Bobbin. This Singer Bobbin Has a Thread Capacity up to 30 Yards. It is Made of Clear Plastic With 1.0mm Wall Thickness. The “J” or 15 Class Bobbin is The Sewing Industry Standard For SINGER, Kenmore, Brother, JANOME, Baby Lock, Necchi, White, and many other Brands.

Are all plastic bobbins the same?

Bobbins not only come in different sizes, but also in metal as well as plastic, and empty as well as pre-wound. While machines can only use one bobbin size, whether it is plastic or metal does not typically matter, however consult your machine manual to be sure.

Do all Singer sewing machines use the same bobbins?

Bobbin Tips & Hints



Use only bobbins that are the same class/style as those that come with your machine – don’t substitute! SINGER® branded bobbins are recommended for best results.

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Can I use metal bobbins in My Brother sewing machine?

Metal bobbins and plastic bobbins of the same size can NOT be swapped. Machines are set for a very precise tension setting. If they are set for a lighter plastic bobbin, the tension will change if a heavier metal bobbin is used.

What size is SA156 bobbin?

The Brother SA156 is a high quality clear plastic class 15 bobbin. It is 7/16” deep with a security notch for consistent bobbin thread winding.

What replaced the Singer 9960?

The Singer Quantum 9985 has more decorative stitches than either the Singer 9980 or the 9960. It could be your choice if you need more options for embellishing. The documentation and built-in guidance will be able to help you get set up making decorative edging or embellishments on your jeans or backpack.

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