Product Features
Product Description
Simpson Strong-Tie HDIA25 HDIA Hollow Drop-In Internally Threaded Anchor is a flush-mount expansion anchor engineered by Simpson Strong-Tie for attaching threaded rod to support conduit, cables, and lighting in both hollow and solid base materials. The internally threaded design enables secure anchoring into CMU, hollow-core plank, brick, normal-weight concrete, and lightweight concrete - while the flush-mount profile and easy bolt removal make it a versatile, installer-friendly solution for a wide range of suspension applications.
Key Features
- Suitable for suspending conduit, cable trays, pipe supports, fire sprinklers and suspended lighting into concrete
- Expansion design allows HDIA to anchor into CMU, hollow-core plank, brick, normal-weight concrete and lightweight concrete
- Internally threaded anchor allows for easy bolt removal
- Die-cast Zamac 3 alloy shell with carbon-steel cone
- Flush-mount profile seats cleanly at the surface for a finished installation
- Compatible with both hollow and solid base materials, installed using the appropriate setting tool
Specifications
- MPN: HDIA25
- Brand: Simpson Strong-Tie
- Anchor Type: Hollow Drop-In Internally Threaded Expansion Anchor
- Rod / Bolt Diameter: 1/4 in.
- Length: 3/4 in.
- Drill Bit Diameter: 3/8 in.
- Threads Per Inch (TPI): 20
- Shell Material: Die-cast Zamac 3 alloy
- Cone Material: Carbon steel
- Installation Tool (Hollow Materials): HDIASTH25 setting tool
- Installation Tool (Solid Materials): HDIASTS25 setting tool
- Packaging: Packs of 100 and Cartons of 1600
- Country of Origin: China
Approved Applications
- Suspending conduit and cable trays from concrete ceilings
- Pipe support and mechanical system hangers in concrete and masonry
- Fire sprinkler system installations requiring flush-mount anchoring
- Suspended lighting attachment in concrete, CMU, and hollow-core plank
- Anchoring into hollow-core plank and CMU block walls or ceilings
- Threaded rod attachment in brick, normal-weight concrete, and lightweight concrete
Frequently Asked Questions
- What base materials is the Simpson HDIA25 anchor compatible with?
- The HDIA25 is designed for use in both hollow and solid base materials. Compatible substrates include CMU (concrete masonry unit), hollow-core plank, brick, normal-weight concrete, and lightweight concrete. Its expansion design allows it to grip securely in all of these materials.
- What setting tools are required to install the HDIA25?
- Installation requires a specific setting tool depending on the base material. Use the HDIASTH25 setting tool for hollow materials such as CMU and hollow-core plank, and the HDIASTS25 setting tool for solid materials such as brick and concrete.
- What drill bit size is needed when installing the HDIA25 anchor?
- A 3/8-inch diameter drill bit is required to prepare the hole for the HDIA25 anchor prior to installation.
- What rod or bolt diameter does the HDIA25 accept?
- The HDIA25 is internally threaded to accept a 1/4-inch diameter threaded rod with a thread pitch of 20 threads per inch (TPI). The internally threaded design also allows for easy bolt removal when needed.
Note: Product dimensions may differ from picture. Please see the item description above for specifications.
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