Reference illustration — produced to your drawing
Anchors
Drop In Concrete Anchors
An internally threaded expansion anchor driven flush into a pre-drilled hole and expanded with a setting tool. The lower portion expands against the hole wall to lock the body in the concrete.
Used for flush, removable connections in concrete floors and slabs, often to bolt down equipment or railings. Bought by contractors where a threaded stud can be removed without disturbing the anchor.
Standard
To your drawing
Size range
M6 – M20 · 1/4 – 3/4 in
MOQ
From 50 pcs
Lead time
Samples 5–10 days
What we produce
- Carbon steel or stainless 304/316L body
- Internal metric coarse or UNC thread
- Set flush below the surface
- Expanded with a matched setting tool
- Zinc plated or plain finish
Specification notes
- Threaded stud or bolt supplied separately
- Setting tool matched to anchor size
- MOQ from 50 pieces
Specifications
Every line below is a starting point, not a limit. Non-standard sizes, special threads and unusual materials are what we do — send the drawing and we confirm what fits.
| Size range | M6 – M20 · 1/4 – 3/4 in |
|---|---|
| Threads | Internal metric coarse · UNC thread |
| Head / geometry | Internally threaded body set flush with the surface; expanded with a setting tool, no drive recess |
| Materials | Stainless steel 301 / 303 / 304 / 304L / 316 / 316L / 410 / 416 / 17-4PH · carbon steel 1045 / 1215 / 12L14 · alloy steel 4130 / 4140 · aluminium 2024 / 5052 / 6061 / 7075 · brass · bronze · copper · titanium |
| Finishes | As machined · black oxide · zinc plating · nickel plating · chrome plating · anodizing · passivation (through our vetted partner network) |
| Precision | ±0.01 mm on features that locate, seal or fit; ISO 2768-m for general dimensions |
| Marking | Head marking, grade marking or your own identification mark per drawing |
| Documents | Material certificate (MTR) with every batch, plus pre-shipment photos before dispatch |
| MOQ | From 50 pieces per type and material · samples from 1 piece |
| Sample lead time | 5–10 days |
| Production lead time | 25–35 days after sample approval |
| Quote | Within 24 hours, with DFM feedback |
Other anchors we manufacture
See all 179 part types →
Send us the drawing
We reply within 24 hours with DFM feedback, a process route and a price. Samples from 1 piece, production from 50 pieces, shipped from Qidong City, Jiangsu Province, China.
Request a quote