Understanding the Tip Numbering System

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What happens here

The presenter explains the three-digit numbering system on the spray paint tips. The first digit, when multiplied by two, indicates the fan width in inches. For example, a 621 tip has a '6' as its first digit, meaning 6 x 2 = 12, resulting in a 12-inch fan width. A 210 tip has a '2' as its first digit, resulting in a 4-inch fan. The last two digits of the number refer to the orifice size; a larger number indicates a larger orifice, allowing more paint to be sprayed. This explains why fine finish tips have smaller orifice numbers than standard tips, as they are designed to spray less paint for a finer finish.

Goal: Interpret the three-digit numbering on spray paint tips to understand fan width and orifice size.

Tools and materials

Graco Blue Rack X Tip Graco — Illustrating standard tip numbering (e.g., 621)
Graco Green Fine Finish Tip Graco — Illustrating fine finish tip numbering (e.g., 210)

What they say

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And the numbers I'm actually referring to are three-digit numbers. And they refer to the fan width in inches. So if I'm uh calling out a 621 tip, the first number is a six, which is the fan width in inches times 2. So the 6 multiplied by two is 12. So, this blue tip, a 621, will actually throw a 12 in fan out. That's how far the fan width of a gun when you're actually spraying will actually cover. On a fine finish tip, the tip itself is a 210. So, the first number is a two multiply by two, which is four, and that gives you a 4 inch fan. So, it's a lot narrower of a fan. The last two digits re the last two digits refer to the orifice size. And the larger the number, the larger the orifice, the more paint it throws out. So a 210, the orifice is a 10. A 621, the orifice is a 21. So these fine finish tips don't throw out nearly as much paint as these rack 621 tips.

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