Simpson HDIA31 Hollow Drop-In Internally Threaded expansion Anchor 5/16″ Quality Free Shipping Outlet

The Simpson Strong-Tie Hollow Drop-In Anchor (HDIA) is an internally threaded, flush-mount expansion anchor for use in hollow materials such as CMU and hollow-core plank, as well as in solid base materials such as brick, normal-weight and lightweight concrete. The expansion design allows anchoring to CMU, hollow-core plank, brick, normal-weight concrete and lightweight concrete while the internally threaded anchor allows for easy bolt removal. Suitable for suspending conduit, cable trays, pipe supports, fire sprinklers and suspended lighting into concrete.

• Drill Bit Size: 5/8″
• Length Spec: 1-1/4″
• Manufacturer Name: Simpson Strong-Tie
• Accepts Rod Size: 5/16″
• For Treated Lumber: yes
• Material: Zamac 3

Note: Product dimensions may differ from picture. Please see above item description for specifications.

To use this anchor, first drill a hole with a 5/8″ drill bit. Then insert the anchor into the hole. Make sure it’s flush-mounted. You can use it to attach things like conduit, cable trays, etc. to concrete. Remember, the product dimensions might not be exactly as shown in the picture, so check the description for the right specs. As for maintenance, keep it clean and dry to ensure its long-term performance.