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3/4" American Made Drop-In Anchor 316 Stainless Steel, 25/Box

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$673.00 per Box of 25
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Purchase the 3/4" 316 Stainless Steel American Made Drop-In Anchor direct: receive huge savings and free freight. All orders ship the same day they are received.
SKU: ADIS31634
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Required To Install: 3/4" Drop-In Setting Tool, Each

ThunderDrop® - 3/4" American Made Drop-In Anchor (three one six) 316 Stainless Steel

The 3/4" American Made Drop-In Anchor (three one six) 316 Stainless Steel is designed for outdoor, wet applications. A setting tool is required to set each anchor in the concrete. Buy direct to save. All orders ship immediately with no charge for freight.

  • Bit Size 1"
  • Minimum embedment 3-3/16"
  • For use in solid concrete, not to be used in brick or block
  • For wet, outdoor environments
  • Meets BAA requirements
  • One length per diameter
  • Internal threads are national coarse
  • Setting tools sold separately
  • All orders over $25.00 ship freight free
Products specifications
Bit Size 1"
Minimum Embedment 3-3/16"
Thread Type 3/4" - 10
2000 PSI Concrete - Pull-Out (lbs.) * 6678
Type Female
Primary Concrete only
Diameter 3/4"
Length 3-3/16"
Material 316 Stainless Steel
Environment Submerged/Chemicals
Box Qty 25
Minimum Spacing 10"
Minimum Edge Distance 5"
Minimum Fixture Hole Diameter (In Place) 1-1/8"
Minimum Fixture Hole Diameter (Hole Spotted) 3/4"
Inside Anchor Diameter-Bolt Diameter 3/4"
Outside Anchor Diameter 1"
Internal Thread Length 1-3/8"
Length Measurement End to End
Bolt Length Fixture Thickness + Embedment Depth
Brand Name ThunderDrop

The 3/4" American Made Drop-In Anchor (three one six) 316 Stainless Steel is made from (three one six) 316 Stainless Steel. 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" 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 3/4" 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 3/4".

Length Anchor
The length of the anchor is 3-3/16", and is measured as an overall length of the anchor from end to end.

Thread Type
The threads on the anchor are national coarse threads that measures 3/4" with 10 threads per inch, commonly referred to as 3/4"-10.

Thread Length
The length of the threads on the anchor is 1-3/8" in length.

Setting Tool
Each anchor must be set in the concrete with a specific setting tool. The anchor is set using the 3/4" setting tool part number DIST34, which is sold separately.

The anchor is packaged with 25 pieces per box and does not come with a setting tool.

Minimum Embedment
The anchor minimum embedment into the concrete is 3-3/16". Therefore, the anchor must be installed so that a minimum of 3-3/16" 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 3/4" diameter anchor requires the hole in the fixture to be 1-1/8".

Torque Value
The maximum torque that can be applied to the anchor once installed is 80 ft. lbs.

Spacing between Anchors
Each anchor must be spaced a minimum distance of 10" from each other when measured center to center.

Edge Distance
It is very important not to install the anchor any closer than 5" 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 1-3/8", 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 1-3/8" for the thread engagement.

Holding Values - Ultimate Load Values in 2000 PSI Concrete

anchor Size

Minimum Embedment

Pull-Out (lbs.)

Shear (lbs.)

3/4" x 3-3/16"




Product Information


Part number

Quantity per Box

3/4" American Made Drop-In Anchor (three one six) 316 Stainless Steel




* The figures above indicate average ultimate tension and shear failure values. A safety factor of 4:1 or 25% of ultimate value is generally accepted as a safe working load. Reference should always be made to applicable codes.

These bits work with the selected anchor
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