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Description
Simpson Strong-Tie HDIA25 Hollow Drop-In Anchor for 1/4-in. Rod (100 Pack)Simpson Strong Tie HDIA25 Description The Simpson Strong Tie Hollow Drop In Anchor (HDIA) is an internally threaded, flush mount expansion anchor designed for use in hollow materials like CMU and hollow core plank, as well as solid base materials such as brick and concrete. Simpson Strong Tie HDIA25 Includes (100) Hollow Drop In Internally Threaded Anchor Simpson Strong Tie HDIA25 Features Suitable for suspending conduit, cable trays, pipe supports,
Simpson Strong-Tie HDIA25 Description
The Simpson Strong-Tie Hollow Drop-In Anchor (HDIA) is an internally threaded, flush-mount expansion anchor designed for use in hollow materials like CMU and hollow-core plank, as well as solid base materials such as brick and concrete.
Simpson Strong-Tie HDIA25 Includes
- (100) Hollow Drop-In Internally Threaded Anchor
Simpson Strong-Tie HDIA25 Features
- Suitable for suspending conduit, cable trays, pipe supports, fire sprinklers, and suspended lighting into concrete
- Expansion design allows anchoring into CMU, hollow-core plank, brick, normal-weight concrete, and lightweight concrete
- Internally threaded anchor allows for easy bolt removal
Simpson Strong-Tie HDIA25 Applications
- Suspending conduit and cable trays
- Pipe supports and fire sprinklers
- Suspended lighting into concrete
Simpson Strong-Tie HDIA25 Installation Overview
- Drill a hole in the base material using the specified diameter carbide drill bit.
- Blow the hole clean using compressed air.
- Insert the HDIA into the hole and tap with a hammer until flush against the surface.
- Using the designated setting tool, drive the anchor to the bottom of the drilled hole.
- Position the fixture, insert the fastener, and tighten.
Simpson Strong-Tie HDIA25 Specifications
| Material | Zamac 3 |
| Length | 3/4" |
| Accepts rod size | 1/4" |
| Drill bit size | 3/8" |
| For Treated Lumber | Yes |
| Quantity | 100 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 1942 reviews
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Product Reviews
★★★★★ 5
This shirt checked all the boxes, comfort, fit and feel.
Size: 3X-Large, Color: Teal 02, Size: 3X-Large, Color: Teal 02
OMG! what a nice shirt. The pattern is awesome and the material is very soft and light weight. It is so breathable. Material has a bit of stretch so it very comfortable sitting or standing and does not wrinkle. I will be ordering at least on more in another color
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Reviewed in the United States on May 18, 2026
★★★★★ 5
Surprisingly awesome. Seriously. And I hate buying clothes.
Size: X-Large, Color: Black
I'm 6'1", 215 with large shoulders and chest. "Athletic dad-bod." Nothing fits me perfectly. I'm constantly stuck between an XL and XXL shirt, and a 37x31 pant---so literally nothing fits me and if you're a big guy, we all know that most polo shirts look like crap and fit like garbage bags.
The shiny tone first made me skeptical. I wasn't even going to take it out of the package. But for $19, I said screw it.
It fits really well. Not slim fit, but not "Ralph Lauren trash bag regular fit." It's soft like textured silk. It looks good and is the perfect length if you're 6'-6'3.
And no--I know your first thought with the texture and shine is "does it look like a cheesy club shirt on a NJ Italian guy?" Shockingly, no...it's actually really nice (yeah--I had the same thought).
It's stretchy. It's relatively form fitting, and it's cool to the touch.
I immediately bought 3 more.
For $19--just buy it. You won't regret it.
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Reviewed in the United States on December 21, 2025
★★★★★ 5
Good quality
Size: Small, Color: Teal 02
This Tshirt is comfortable and value to money. No need to IRON. Material quality I liked it.
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Reviewed in the United States on May 27, 2026
★★★★★ 4
Good shirt
Size: Medium, Color: Teal 02
Love the color and the design of the shirt. The small threads it’s made out of starting to come loose though. Now when look down at chest and stomach area, there are 15+ little strings that pop out of the shirt.
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Reviewed in the United States on April 25, 2026
★★★★★ 5
Awesome shirt!
Size: Medium, Color: Blue, Size: Medium, Color: Blue
This is a nice shirt! Let me start by saying I am 6 foot 2, 195pounds with about a 40 inch chest, 42 inches on a good day! Ha ha. I ordered a medium because I wanted an athletic fit. The medium fits just right. For those wanting a normal, roomier fit I would recommend the large for my size. I’ll get a lot of compliments when I wear this shirt. What I like about it is that it is wrinkle free and looks great, I would not wear it on a super hot day with a snug fit. I do live in Florida, so that makes a difference. I also ordered the black one, both the blue and the black look very good for dress /casual. It’s polyester so it’s not super soft, which is OK. That also means it does not shrink.
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Reviewed in the United States on October 4, 2025