What does #3 pencil mean?
The hardness of the graphite core is often marked on the pencil — look for a number (such as “2” “2-1/2” or “3”) — and the higher the number, the harder the writing core and the lighter the mark left on the paper.
Is there a number 1 or 3 pencil?
Lead pencils are graded on a scale from No. 1 to No. 4 based on how much graphite is inside the core. The #1 pencils are the softest, while the #4 pencils are the hardest.
What is a #2 pencil?
Pencils above number two are filled with harder graphite and tend to have lighter markings and are frequently used in draughting pencils, often used by architects and designers. A number two pencil on the numeric scale is roughly equivalent to an HB pencil on the international scale.
What is the darkest pencil number?
B9 is the softest and darkest. 9H is the lightest and hardest graphite pencil. So a B6 is softer and darker than a B2. An 6H is harder and lighter than a 2H and much harder and lighter than a HB or a B pencil.
What is a 4B pencil?
“B” pencils feature softer graphite. (The “B” stands for “black”.) The number found in front of the letter reveals just how soft or hard the pencil is. In other words, a “4H” pencil is harder than a “2H” pencil while a “4B” pencil is softer than a “2B” pencil.
What is a 3B pencil used for?
A 3B provides both wider, blacker text, and that smoothness that allows the pencil to glide on the page. Darker pencils glide even more – at least most of them; this depends on the brand – but they wear out very quickly, and need to be sharpened every couple of minutes.
What size lead is a #2 pencil?
Generally, an HB grade about the middle of the scale is considered to be equivalent to a #2 pencil using the U.S. numbering system.
What is the difference of 2B and 3B?
The 2B Thread has wide application, accommodates plating, finishes, and coating to a limited extent and, therefore, has fair tolerance allowances. Class 3B Thread means a 3A screw in a 3B nut or threaded hole for applications that are close to tolerance limits.