What size concrete bit do I need for a 3/8 anchor?

Deeper embedment will usually result in better holding strength. The hole in the fixture or material being fastened must be larger than the designated diameter of the anchor. The 3/8"" diameter anchor requires the hole in the fixture to be 9/16"".

concretefasteners.com - 3/8" Drop-In Anchor Zinc Plated, 100/Box - Concrete Fasteners

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The 3/8" Drop-In Anchor Zinc Plated is designed for indoor, dry environments and requires a setting tool to set the anchor in the concrete. Every order ships the same day it is received, and freight is free. * Values shown are average ultimate values and are offered only as a guide and are not guaranteed. A safety factor of 4:1 or 25% is generally accepted as a safe working load

Applications

The anchor is made from Carbon Steel, and is Zinc Plated. This anchor is designed for use in Concrete only, and should never be used in block or brick base material.

Environment

The anchor is designed for use in a Dry environment.

Hole Diameter/Bit Diameter

The anchor requires a 1/2" hole to be drilled in the base material (Concrete only). The hole should be drilled with carbide tipped bit that meets ANSI standards and used in a hammer drill.

Designated Size

The designated size of the anchor refers to the inside diameter 3/8" of the anchor or the diameter of the threaded rod or bolt that can be inserted into it.

Diameter of Anchor

The diameter of the anchor is 3/8".

Length Anchor

The length of the anchor is 1-9/16"

Thread Type

The threads on the anchor are internal threads that measures 3/8" with 16 threads per inch, commonly referred to as 3/8"-16 .

Thread Length

The length of the threads on the anchor is 5/8" in length.

Setting Tool

Each anchor must be set in the concrete with a specific setting tool. The anchor is set using the 3/8" setting which is sold separately.

Packaging

The anchor is packaged with 50 pieces per box and does not come with a setting tool.

Minimum Embedment

The minimum anchor embedment into the concrete is 1-9/16". Therefore, the anchor must be installed so that a minimum of 1-9/16" of the anchor is embedded into the concrete.

Depth of Hole

The hole in the concrete can be deeper than the minimum embedment depth for the anchor. Deeper embedment will usually result in better holding strength.

Fixture Hole Diameter

The hole in the fixture or material being fastened must be larger than the designated diameter of the anchor. The 3/8" diameter anchor requires the hole in the fixture to be 9/16".

Torque Value

The maximum torque that can be applied to the anchor once installed is 10 ft./lbs.

Spacing between Anchors

Each anchor must be spaced a minimum distance of 5" from each other when measured center to center.

Edge Distance

It is very important not to install the anchor any closer than 2-1/2" from an unsupported edge of the concrete.

Bolt Length

When a bolt is used in conjunction with the anchor, the length of the bolt needed is determined by considering these factors: Flush With Concrete - when the anchor is set flush with the surface of the concrete, add the thickness of the material being fastened to the thread length of 5/8", and then add the space for any washers used. - when the anchor is set flush with the surface of the concrete, add the thickness of the material being fastened to the thread length of 5/8", and then add the space for any washers used. Below Surface of Concrete - add the depth below the surface of the concrete to the thickness of the material being fastened, then add the space for the washer, and, finally, add 5/8" for the thread engagement.

Holding Values - Ultimate Load Values in 2000 PSI Concrete

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Can I pour my own concrete slab for shed?

Fortunately, laying a cement slab floor is a do-it-yourself job, especially when you are dealing with a relatively compact area. Garden sheds typically require relatively small concrete slabs, so this is a task that you and one other helper can complete without a lot of effort.

sheds4less.com.au - Concrete Slabs for Sheds in 7 Easy Steps - Sheds4Less

You can get a lot more out of your garden shed by creating a concrete floor for it. Concrete floors open up many new possibilities and add to the durability and usefulness of a garden shed. Fortunately, laying a cement slab floor is a do-it-yourself job, especially when you are dealing with a relatively compact area. Garden sheds typically require relatively small concrete slabs, so this is a task that you and one other helper can complete without a lot of effort. Learn how to design a concrete slab, how to build a concrete slab and how to make the necessary preparations below.

Step One: Choose the Right Concrete

Concrete is available in several different grades. It is important to select the right grade for your concrete shed slab. Grade N32 is designed for areas like driveways. You do not need that high of a grade, but you should not use something that is as weak as grade N10. Grade N25 will give you a nice finish and should be more than strong enough for your concrete slab floor. One shortcut is to order your concrete and have it delivered to you. Tell the company the purpose of the concrete. Ordering premixed concrete will save you time, but it will cost you extra money.

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