Website listed on the box ( Concrete Fastening Systems, Inc.) sells the product from Cleveland, OH, USA... but can't find a 'Manufactured in... ' label. Works well though. Similar to Tapcon, but less expensive.

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CONFAST 3/16" x 2-1/4" Hex Head Concrete Screw Anchor with Drill Bit (100 per Box)

Q: What is the horizontal shear strength of this anchor?

In 2000 PSI Concrete - the shear strength is 900 lbs

Q: Will these properly hold in a 1/4" diameter hole that's 3 1/4" deep?

No the drill size is 3/16 not a 1/4 inch. The hole has to be smaller to allow the masonary screw to hold . Good luck

Q: This has a shear rating of 540 what ? the same as the 3/16” fastner ? i don’t believe they can be the same. please explain it to me. thanks

lbs per square inch. metal could be the same strength even if its thicker

4.4/5

Product ID: 402451235

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CONFAST 3/16" x 2-1/4" Hex Head Concrete Screw Anchor with Drill Bit (100 per Box)

Have a Question? See What Others Asked

What is the horizontal shear strength of this anchor?

Will these properly hold in a 1/4" diameter hole that's 3 1/4" deep?

made in usa?

This has a shear rating of 540 what ? the same as the 3/16” fastner ? i don’t believe they can be the same. please explain it to me. thanks

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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