ThunderDrop - 3/8" American Made Drop-In Anchor 316 Stainless Steel
These anchors come packaged with 50 pcs per box and are designed for fastening items to concrete.
- Bit size 1/2"
- Minimum embedment 1-9/16"
- Thread Length 5/8"
- Do not use in vibratory loads
- 3/8" inch diameter x 1-9/16" inch long
- Spacing must be a minimum of 10 anchor diameters
- Free freight on all orders over $25.00
|Thread Type||3/8" - 16|
|2000 PSI Concrete - Pull-Out (lbs.) *||1560|
|Minimum Edge Distance||2-1/2"|
|Minimum Fixture Hole Diameter (In Place)||9/16"|
|Minimum Fixture Hole Diameter (Hole Spotted)||3/8"|
|Maximum Torque||10 ft./lbs.|
|Length Measurement||End to End|
The anchor is made from 316 Stainless Steel and meets the Buy America Act (BAA). This anchor is designed for use in Concrete only, and should never be used in block or brick base material.
The anchor is designed for use in a submerged/chemicals 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.
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".
The length of the anchor is 1-9/16"
The threads on the anchor are national coarse threads that measures 3/8" with 16 threads per inch, commonly referred to as 3/8"-16.
The length of the threads on the anchor is 5/8" in length.
Each anchor must be set in the concrete with a specific setting tool. The anchor is set using the 3/8" setting tool part number DIST38, which is sold separately.
The anchor is packaged with 50 pieces per box and does not come with a setting tool.
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 depth of the hole that is required for the anchor should be a minimum of 1/2" deeper than the anchor will penetrate the concrete. This will allow space for dust created during the installation process to fall, which will prevent the anchor from bottoming out in the hole before full penetration into the concrete.
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".
To be set properly in the concrete, the anchor must be torqued to between 10 ft./lbs.
Spacing between Anchors
Each anchor must be spaced a minimum distance of 5" from each other when measured center to center.
It is very important not to install the anchor any closer than 2-1/2" from an unsupported edge of the concrete.
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.
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.
- Drill a 1/2" hole into the concrete using a carbide-tipped bit that meets ANSI Standards B212.15.
- Drill the hole a 1/2" deeper than the anchor will penetrate the concrete, making sure the minimum embedment requirements of 1-9/16" is met.
- Clean the hole with a wire brush, vacuum, compressed air, or a blow-out bulb.
- Insert the point of the 3/8" American Made Drop-In Anchor 316 Stainless Steel into the hole. Make sure that the screw being installed will penetrate the base material a minimum of 1" but no deeper than 1-3/4".
- Turn the screw clockwise, applying slight pressure until the head of the screw is snug against the material being fastened.
- Always use proper personal protective equipment per manufacturer's and OSHA instructions.