Perhaps the most familiar use for an everyday safety pin is temporarily holding together a torn seam or replacing a missing button until a permanent repair can be made. But did you know that the simple safety pin has evolved into an entire family of specialized fasteners? Beyond the common household safety pin are styles designed specifically for quilting, cloth diapers, kilts, floral arrangements, jewelry making, doll making, medical applications, industrial uses, and many other purposes. Available in numerous sizes, wire thicknesses, materials, finishes, and specialty designs, there's a safety pin made for almost every application imaginable.
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Safety Pins
Safety pins are one of those everyday items that most people don't think much about until they need one. Whether you're making a quick clothing repair, securing fabric while sewing, pinning together quilt layers, creating jewelry, or working on a craft project, there's a good chance a safety pin can make the job easier.
Although they all share the same basic design, safety pins are available in many sizes, wire thicknesses, materials, finishes, and specialty styles. Some are made for delicate fabrics while others are designed to hold together thick quilts, upholstery fabrics, or industrial materials. Choosing the right safety pin not only makes your project easier but also helps protect delicate materials from unnecessary damage.
Standard Safety Pin Size Chart
Safety pins are commonly identified by a size number rather than by their actual length. The following chart lists the most common standard sizes. Although measurements may vary slightly between manufacturers, these dimensions provide an excellent general reference when selecting the right pin for your project.
| Size |
Length |
Millimeters |
Common Uses |
| #00 |
3/4" |
19 mm |
Doll clothing, miniature crafts, lightweight fabrics |
| #0 |
7/8" |
22 mm |
Light sewing, crafts, delicate materials |
| #1 |
1 1/16" |
27 mm |
General sewing and everyday household use |
| #2 |
1 1/2" |
38 mm |
Crafts, garments, medium-weight fabrics |
| #3 |
2" |
51 mm |
Quilting, blankets, heavier materials |
| #4 |
2 1/4" |
57 mm |
Heavy fabrics, upholstery, specialty sewing |
| #5 |
3" |
76 mm |
Industrial, upholstery, and heavy-duty applications |
Dimensions shown are typical industry standards. Actual measurements vary slightly between manufacturers.
Common Types of Safety Pins
What most people think of as an "ordinary" safety pin is only one member of a much larger family. Manufacturers have developed specialized pins for specific purposes, making many projects easier, safer, and more efficient.
- Standard Safety Pins – General-purpose pins used for clothing repairs, sewing, and everyday tasks.
- Curved Quilt Safety Pins – Curved shafts make it much easier to pin multiple layers of a quilt without bunching the fabric.
- Diaper Pins – Larger pins with locking plastic heads designed to safely fasten cloth diapers.
- Kilt Pins – Decorative heavy-duty pins used on kilts, shawls, wraps, and garments.
- Doll Pins – Small safety pins commonly used in doll making and miniature sewing projects.
- Decorative Safety Pins – Used as both a fastener and part of the finished design in jewelry, beadwork, and wearable art.
Materials & Finishes
Safety pins are commonly manufactured from steel and are often finished with nickel plating to resist corrosion and provide a smooth, bright appearance. Brass safety pins are another popular choice because they naturally resist rust and are often preferred for long-term storage. Decorative safety pins may also be available in black, antique brass, gold-tone, colored, or painted finishes to complement craft and fashion projects.
Choosing the Right Safety Pin
Choosing the proper size is easier than many people realize. A safety pin should pass easily through the material and close without forcing the spring.
- If the pin barely closes, choose the next larger size.
- If the pin feels loose or leaves unnecessary holes, try the next smaller size.
- Use the smallest pin that comfortably holds the material.
- Replace bent or dull pins.
- Store safety pins closed to protect their points.
Did You Know?
Many quilters own hundredsâ€â€ÂÂÂÂeven thousandsâ€â€ÂÂÂÂof safety pins. Large quilts often require dozens or even hundreds of curved quilt safety pins to hold all of the fabric layers securely together while quilting.
A Brief History of Safety Pins
People have been fastening clothing for thousands of years. Long before the modern safety pin was invented, ancient civilizations used decorative fasteners known as fibulae. These early metal clasps often looked surprisingly similar to today's safety pins and served the same basic purpose of holding garments together. Many were beautifully crafted from bronze, silver, or gold and were worn as both practical fasteners and decorative jewelry.
In 1849, American inventor Walter Hunt transformed the concept by designing a spring-loaded pin made from a single piece of wire with a protective clasp that safely covered the sharp point. His elegant design proved simple, inexpensive to manufacture, and remarkably effective. More than 175 years later, the modern safety pin still follows the same basic design, making it one of the few everyday inventions that has changed very little over time.
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