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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.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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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
4.3 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Gift for granddaughter
Size: Large, Color: Mauve/Butterflies
My granddaughter likes these tops. They are sturdy, comfortable and soft. She loves the ruffles on the shoulder. They were reasonably priced and I feel they will last. Look good after a number of washes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 25, 2025
★★★★★ 3
Shrank after one wash
I wanted to love these but they shrank in the washer after one wear. Now they are above my daughters wrist, too small. They do feel good, and have a nice thickness. From initial unpackaging I expected we’d have these in rotation for a while. Looks and feels like a quality buy, until washing.
I’ll be saving them for a younger child but my intention was for the oldest. I’ve been trying out the Amazon Essentials brand clothing for kids. Seems to be hit or miss, haven’t come across anything I absolutely love.
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Reviewed in the United States on January 28, 2026
★★★★★ 5
Good Quality
Size: Small, Color: Mauve/Butterflies
Beautiful tops. Material is good quality. Fit is a little small but still fits well. All in all it is excellent quality for your money.
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Reviewed in the United States on June 3, 2025
★★★★★ 4
Cute staple shirts, run small
Size: 2T, Color: Black/Ivory
Cute shirt with soft material, good quality for price. However, they run small. For reference, my daughter is typically in 18m- I bought size 2T in these shirts and they are still short on her. They raise up on her belly if worn with regular pants. For this reason, I use them mostly under overalls, vests, dresses, etc
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Reviewed in the United States on October 10, 2025
★★★★★ 5
Great addition to wardrobe but size up is likely needed.
Size: Large, Color: Navy/French Stripe
Why did you pick this product vs others?:
These are super cute, but you may want to size up at least 1 size as they are more of a fitted style and fabric.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 30, 2025
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