Safety Pin Sizing
Standard safety pins come in various sizes and colors and can range in size from 3/4" to 4" long. Oddly enough, the size numbers do not reference the actual length. Below is a size chart that may help you. Keep in mind though that these are standard or common lengths. Actual lengths may vary slightly from brand to brand so if length is crucial it is best to ask the precise length of the brand you are considering.
| Size Reference |
Length in Inches |
Length in Millimeters |
| #00 |
3/4" |
19mm |
| #0 |
7/8" |
22mm |
| #1 |
1 1/16" |
27mm |
| #2 |
1 1/2" |
38mm |
| #3 |
2" |
51mm |
| #4 |
2 1/4" |
57mm |
| #5 |
3" |
76mm |
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