There weren’t any standards for grading or sizing lumber until as late as 1895. The sizes were based on local customers and demand. As a result, lumber sizes varied considerably from one region (and mill) to the next. This lumber was not kiln dried (hence it was green) and it was supplied strictly rough sawn from the mill. There’s some history involved (most of the time we blame either history or marketing when obvious things are obviously wrong!).ĭuring the 18th and 19th centuries, local sawmills were there to satisfy demand using lumber felled nearby. Because of that, any given piece of lumber might vary considerably in terms of strength, utility, and value for any given use.īe sure to keep all that in mind for your projects, You’ll want to select the lumber you’re using carefully if feasible! So Then Why Isn’t a 2 X 4 Actually 2 Inches by 4 Inches? That’s per the American Softwood Lumber Standard PS 20-05, which BTW is a voluntary product standard.Ī particular piece of lumber can have a wide range of quality and appearance due to knots, shakes, slope of grain, and other natural characteristics. Green lumber is any lumber whose moisture content is greater than 19%.When purchased, rough lumber can’t less than 1/8″ thicker or wider than the actual size specified, except that 20% of a shipment can be up to 2/32″ thicker or wider. Lumber can be purchased as dry or green, where dry lumber has been seasoned or dried to a moisture content of 19% or less. Well, 2×8 nominal size has 2×8 lumber actual size of 1.5 x 7.25 inches. The sizes presented are based on commercially available lumber within the USA, so the data shown is in Imperial (Inches) units. The Actual Size is the actual measured size of the lumber. The Nominal Size is how we refer to the lumber, for example, a “2 X 4”. Knowing the actual lumber dimensions is obviously very helpful! Terminology, Grades, and Tolerancesīefore we dive into the data, a quick word about lumber size terminology, grades, and tolerances. Instead its actually 1.5 inches by 3.5 inches. For example, a “2 x 4” isn’t 2 inches by 4 inches. This page is all about knowing the actual dimensions of commercial lumber sizes versus the nominal size used to refer to them. (Scroll Down if You Need the Chart Right Away) These are set out from the smallest wrench to the largest, and you will be able to buy these wrenches individually or in wretch sets.Commercial Lumber Sizes Chart, Table, & Calculator Older British and current US spanners (wrenches) have inch sizes that are imprinted in intermediate sizes in fractions. It is imprinted on the spanners in millimeter (mm) values. The width across flats indicates the nominal "size" of the spanner. You can use this wrench conversion chart for metric sockets, wrenches, tools, and when you need to convert between inches and mm. When you need to use metric sockets, the metric sizes might not relate to the imperial sizes. In the following wrench conversion chart, you can find sockets sizes in order for SAE socket sizes, tools, and bolts. The wrench set sizes chart here has both inches and mm and can be used as an open-ended wrench size chart and your box-end wrench size chart together. Here is more information on the standard size of wrenches in your toolbox. Here you can find the standard wrench size chart in order. Wrenches are available in a set or individually. In our guide, you can find a common wrench size chart that can be used for your combination wrench sizes chart as these can tell you box end wrench sizes and the standard wrench sizes in order. When working with SAE and metric nuts and bolts, you can mix and match socket sets, or you need an SAE to metric size wrench conversion chart for the mm to SAE equivalent for all the sockets you need. There are Standard (SAE) and Metric wrench sizes, and you can find all wrench sizes in order that can range from the smallest to the largest and come as part of a set for activities like these. While the normal fixed wrench set or ratcheting wrench set won’t contain every size of a wrench, you’ll probably only need a few of them in general.Ī car mechanic will need a wide variety of wrench sizes, whereas someone working on bicycles or farming equipment may only use a few. Because you aren’t dealing with different ratchet drive sizes, wrench sizes are a little easier to figure out than socket sizes.
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