Question

Stitch number for ordinary running on lock stitch sewing machine is

• A. 301
• B. 402
• C. 302
• D. 401

Hint:

• Stitches are classified by type numbers (e.g., ISO 4915).
• Class 300 stitches are Lockstitches}, formed by a needle thread and a bobbin thread interlocking.
• Stitch Type 301} is the plain, straight lockstitch, the most common stitch for general sewing ("ordinary running" stitch on a lockstitch machine).
• Other classes: 100 (single thread chainstitch), 400 (multi-thread chainstitch), 500 (overedge/overlock), 600 (coverstitch).

Answer 1

The Correct Option is A

The lock stitch sewing machine is a widely used machine in textile and garment industries. It creates a stitch by interlocking two threads: one from the needle and the other from the bobbin. The ordinary running stitch refers to a standard stitch used for general stitching operations.

Let’s examine each option:

1. 301

301 is the correct stitch number for an ordinary running stitch on a lock stitch sewing machine. This stitch type is used for general stitching tasks such as joining two pieces of fabric. The 301 stitch is recognized as a basic lock stitch for ordinary sewing and is one of the most common types used in garment manufacturing.

2. 402

402 refers to another type of stitch used in a variety of sewing machines, typically associated with overlock or safety stitches rather than the standard lock stitch for ordinary running. This is not the correct stitch number for ordinary running.

3. 302

302 is another stitch type, but it is not the standard stitch number for ordinary running on a lock stitch machine. This number is usually associated with other stitching operations like blind stitches or specialized seams.

4. 401

401 is a common stitch type used for specific applications but not for ordinary running. Like the 402 and 302, it is not used for basic stitching tasks on a lock stitch sewing machine.

Why 301 is the Correct Answer

The stitch number 301 is the standard for an ordinary running stitch on a lock stitch sewing machine. It is the most commonly used stitch for basic sewing operations, providing a strong, durable seam for general fabric joining.

Why Not the Other Options?

• 402: Typically used for overlock or safety stitches, not for ordinary running.
• 302: Used for other specialized stitching operations, not for ordinary running.
• 401: Not used for ordinary running; associated with different stitching needs.

A Simple Way to Remember

Think of the 301 stitch as the most basic and common stitch used in sewing machines for general fabric joining – it’s the go-to stitch for ordinary running.

Final Answer

The stitch number for ordinary running on a lock stitch sewing machine is 301.