Industrial Fastener · Anchors Series
Drop-In Anchor
A drop-in anchor is a flush-set, internally-threaded concrete anchor. After drilling, the anchor body is dropped into the hole and the internal expander plug is driven down with a setting tool, expanding the anchor against the hole walls. The bolt or threaded rod is then inserted into the...
Product Overview
Drop-In Anchor sourcing essentials
A drop-in anchor is a flush-set, internally-threaded concrete anchor. After drilling, the anchor body is dropped into the hole and the internal expander plug is driven down with a setting tool, expanding the anchor against the hole walls. The bolt or threaded rod is then inserted into the threaded body. Allows machine-removable bolts (unlike wedge anchors).
Project or drawing specification
Carbon steel, Stainless 304/316
Suspended ceilings, cable tray, light fixtures, MEP systems
Inspection records, lot labels, certificate options, and destination-ready packing.
Technical Data
Specification range
Final dimensions, mechanical properties, finish, and packing are confirmed against the RFQ and applicable standard.
| Diameter | M6 – M20 (1/4" – 3/4") |
|---|---|
| Material | Carbon steel, Stainless 304/316 |
| Surface Finish | Zinc plated, Stainless |
| Required Tool | Setting tool (one per size) — included on request |
| Application | Suspended ceilings, cable tray, light fixtures, MEP systems |
Common surface finishes
Select an option to review its sourcing note. Exact coating system, thickness, and corrosion requirement are confirmed with the order.
Quality Control
Checked before consolidation and export
Each order is matched to the specified standard and verified at practical control points before shipment.
RFQ confirmation
Standard, size, grade, pitch, finish, certificates, packing, and destination are locked before production.
Lot verification
Critical dimensions, thread fit, markings, finish appearance, and packing labels are sampled and recorded.
Shipment approval
Photos and required reports are organized before consolidated loading and export documentation.
Buyer Questions
Frequently asked questions
What is the advantage of a drop-in over a wedge anchor?
A drop-in anchor sits flush with the concrete surface and the bolt or threaded rod can be removed and reinstalled at will, without affecting the anchor. This makes drop-ins ideal for permanent installations where the threaded fitting may need to be serviced — for example, suspended cable trays.
Why does a drop-in anchor need a setting tool?
The internal expander plug must be driven a specific distance — too little and the anchor isn't fully expanded; too much and the threads can be damaged. The setting tool stops at the correct depth. Each anchor diameter has a matching setting tool.
Ready to quote Drop-In Anchor?
Send the standard, size, grade, finish, quantity, packing requirement, and destination. Availability and lead time are confirmed with the inquiry.