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Description
Simpson Strong-Tie HDIA25SS (1/4") Hollow Drop-In Internally Threaded Anchor for Rod (100 Pack)Simpson Strong Tie HDIA25SS Description The Simpson Strong Tie Hollow Drop In Anchor (HDIA) is a flush mount expansion anchor designed for hollow and solid base materials, offering corrosion resistance and easy installation. Simpson Strong Tie HDIA25SS Includes (100) Hollow Drop In Anchor for 1 4 in. Rod Simpson Strong Tie HDIA25SS Features Flush mount expansion anchor for hollow and solid base materials Internally threaded for easy bolt removal
Simpson Strong-Tie HDIA25SS Description
The Simpson Strong-Tie Hollow Drop-In Anchor (HDIA) is a flush-mount expansion anchor designed for hollow and solid base materials, offering corrosion resistance and easy installation.
Simpson Strong-Tie HDIA25SS Includes
- (100) Hollow Drop-In Anchor for 1/4 in. Rod
Simpson Strong-Tie HDIA25SS Features
- Flush-mount expansion anchor for hollow and solid base materials
- Internally threaded for easy bolt removal
- Corrosion-resistant stainless steel cone
- Suitable for suspending conduit, cable trays, and fire sprinklers
Simpson Strong-Tie HDIA25SS Applications
- Suspending conduit and cable trays
- Pipe supports and fire sprinklers
- Suspended lighting into concrete
Simpson Strong-Tie HDIA25SS Installation Overview
- Drill a hole 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
- Use the designated setting tool to drive the anchor to the bottom of the hole
- Position the fixture, insert the fastener, and tighten
Simpson Strong-Tie HDIA25SS Specifications
| Material | Zamac 3 |
| Length | 3/4 in. |
| Accepts rod size | 1/4 in. |
| Drill bit size | 3/8 in. |
| 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
4.6 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Very comfortable !!
Color: White, Size: Standard/Queen
A little more than I was looking to spend but turned out to be worth the extra cost for the comfort !
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Reviewed in the United States on August 22, 2022
★★★★★ 1
Awful, very soft not firm at all, shipped in a tiny box
Color: White, Size: Standard/Queen
So soft they were able to fold it multiple times over into a box a fraction of the size of the pillow.
Firm description is completely misleading.
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Reviewed in the United States on July 25, 2022
★★★★★ 5
Almoada
Color: White, Size: Queen Size Set of 2, Color: White, Size: Queen Size Set of 2
Hotel-like comfort at home
I bought these pillows from Beautyrest and they really exceeded my expectations. They are very soft but at the same time have good support, which helps you rest better throughout the night. They feel like luxury hotel pillows, especially because of their down-like filling.
The jumbo size is perfect and they come well filled, they are not easily crushed. In addition, the cotton cover feels fresh and of good quality.
They arrived quickly and well packed. After using them for several days, they maintain their shape and comfort. I definitely recommend them if you are looking to improve your rest without spending too much.
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Reviewed in the United States on March 20, 2026
★★★★★ 5
Great quality
Color: White, Size: Queen Size Set of 2
★★★★★
Super comfortable and supportive pillows! Great quality, soft but still keeps its shape. I’m sleeping much better now. Highly recommend!
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Reviewed in the United States on May 9, 2026
★★★★★ 5
They aren't super firm; they are more comfortable than rigid 😊
Color: White, Size: King Size Set of 2
I bought these pillows, and honestly, I really liked them. They have a medium firmness that helps significantly with neck pain, yet they remain soft and fluffy without going flat during the night. They hold their shape well and have good loft, so you don't have to keep adjusting them constantly. They don't have any unpleasant odor right out of the package, nor do they slide around much inside the pillowcase something I really appreciate. Overall, they feel comfortable and are of good quality for sleeping in any position.
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Reviewed in the United States on March 26, 2026
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