Needle Parts Fitting into Needle Bar

The needle bar in a sewing machine holds the needle in place. Understanding which parts of the machine needle are designed to interface with the needle bar is crucial.

Identifying Needle Bar Components

The specific parts of a machine needle that fit into the needle bar clamp are:

• Shank: This is the top, often thicker, non-penetrating part of the needle. It is designed to be held securely by the needle clamp within the needle bar.
• Butt: Also known as the needle shank butt, this is the very top end of the shank. It rests against the bottom surface of the needle clamp screw or mechanism in the needle bar, ensuring the needle is seated correctly.

Parts Not Fitting Needle Bar

Other parts of the needle do not interact with the needle bar:

• Blade: This is the long, slender part of the needle that passes through the fabric.
• Scarf: This is a groove or indentation located on the blade side of the needle, near the point. It helps the bobbin hook catch the thread loop.

Conclusion on Fitment

Based on the design and function, only the Shank and the Butt (the top end of the shank) are the parts of the machine needle that fit into the needle bar.

Therefore, the correct option includes (a) Shank and (c) Butt.