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Description
Simpson Strong-Tie HDIA37SS (3/8") Hollow Drop-In Anchor for Rod (50 Pack)Simpson Strong Tie HDIA37SS Description The Simpson Strong Tie Hollow Drop In Anchor (HDIA) is an internally threaded, flush mount expansion anchor designed for hollow and solid base materials. Simpson Strong Tie HDIA37SS Includes (50) Hollow Drop In Anchor Simpson Strong Tie HDIA37SS Features Suitable for suspending conduit, cable trays, pipe supports, fire sprinklers, and suspended lighting into concrete Expansion design allows anchoring into CMU,
Simpson Strong-Tie HDIA37SS Description
The Simpson Strong-Tie Hollow Drop-In Anchor (HDIA) is an internally threaded, flush-mount expansion anchor designed for hollow and solid base materials.
Simpson Strong-Tie HDIA37SS Includes
- (50) Hollow Drop-In Anchor
Simpson Strong-Tie HDIA37SS 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
- Made from Zamac 3 alloy shell with stainless steel cone for corrosion resistance
Simpson Strong-Tie HDIA37SS Applications
- Suspending conduit and cable trays
- Pipe supports and fire sprinklers
- Suspended lighting installations
- Anchoring into concrete, CMU, hollow-core plank, and brick
Simpson Strong-Tie HDIA37SS 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
- Use the designated setting tool to drive the anchor to the bottom of the drilled hole
- Position the fixture, insert the fastener, and tighten
Simpson Strong-Tie HDIA37SS Specifications
| Material | Zamac 3 |
| Accepts rod size | 3/8" |
| Drill bit size | 5/8" |
| Length | 1-1/4" |
| For Treated Lumber | Yes |
| Quantity | 50 |
NOTE: The correct fasteners installed in the correct position must be used to achieve published load values.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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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
4.8 ★★★★★
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Product Reviews
★★★★★ 5
Luvs pulls up are the best
Size: 5T-6T, Unit Count: 48
I love this brand. It’s very secure, and the adjustable band makes it easy to tighten without taking off my child’s pants. It doesn’t leave an odor, the texture is smooth, and my child is always comfortable. The price matches the quality, and there’s no leakage or spillover. Overall, it’s very durable. Make sure to have it correctly fastened because the Velcro can leave scratches on child skin.
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Reviewed in the United States on December 9, 2025
★★★★★ 4
Toddler approved
Size: 4T-5T, Unit Count: 99
Fits true to size and easy to pull up and down by my toddler. Very absorbent - perhaps a little too absorbent as it's taking my daughter forever to be potty trained and she's content in her soiled training pants... Great quality overall.
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Reviewed in the United States on August 29, 2025
★★★★★ 5
They prevent leaks, and fit great!
We have always used Huggies diapers for our babies and young toddlers because they were the only ones that never leaked or caused a rash. My second daughter was fully potty trained at 2.5 years old and never needed pull-ups. However, our third daughter, who also trained at 2.5 years old, digressed with her nighttime potty training due to instability - we moved twice within the first 6 weeks after she potty trained. So we had to get pull-ups for her to wear at night. Obviously since we loved Huggies diapers, we tried Huggies Pull-Ups, and again, they did not disappoint! They never leak, even on nights when she doesn't get up to go at all, and has lots of pee, and they have never caused a rash either, no matter how full. She's been using them for 1.5 years, at night, and we have never had any issues. They are dependable: decently comfortable to the child, do not cause rashes, fit properly with the ability to adjust at the thigh (if needed), and they prevent leaks! I highly recommend them!
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Reviewed in the United States on January 19, 2025
★★★★★ 5
Price good
Size: 5T-6T, Unit Count: 80
Perfect for starters
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Reviewed in the United States on April 11, 2026
★★★★★ 5
Great magnesium supplement with natural ingredi...
Size: 90 Count (Pack of 3)
This is exactly what I needed for my daily health routine. I appreciate that it's made from marine magnesium and includes avocado oil for better absorption. The clinically tested aspect gives me confidence in its quality. The 3-pack is convenient and ensures I don't run out quickly. Overall, a perfect supplement that meets my expectations for natural sourcing and effectiveness.
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Reviewed in the United States on January 2, 2026