Safety Pin Size Chart

This is reprinted from Create For Less

Imperial safety pins are sized as follows:

• Size 00 or 2/0 = ¾ inch
• Size 0 = 7/8 inch
• Size 1 = 1-1/16 inch
• Size 2 = 1-1/2 inch
• Size 3 = 2 inches
• Size 4 = 3 inches

• Notice that the increase in length is not equivalent as the size goes up.
• Size 4 safety pins are also known as blanket pins.
• In metric, typical sizes are 37 mm (~1-1/2 inches) and 46 mm (~1.8 inches).
• Bulk safety pins are sold in quantities of 144 called “Gross”. If a box of safety pins has 10 Gross, that means that there are 1,440 pins in that box.