Metal Drop-In Expansion Anchor
Hollow metal sleeve structure; Internally threaded; Expansion ribs on the outer wall; During installation, a special tool is used to expand the internal cone, pressing the outer wall tightly against the concrete hole wall; The bolt can be removed after installation

Product Introduction
The Drop-In Anchor (Internal Expansion Anchor) is an internally threaded expansion anchor used for fixing to concrete substrates. During installation, the anchor is first placed into a pre-drilled hole, and then a special tool is used to strike the internal expansion cone, causing the sleeve to expand outward and lock securely into the concrete.
WT Fasteners offers a variety of Drop-In Anchors in different specifications, including standard drop-in anchors, long drop-in anchors, stainless steel drop-in anchors, and custom non-standard products.
Widely used in building installation, mechanical equipment fixing, pipe supports, electrical engineering, and steel structure connections.
Product Features
1. Internal Thread Design
After installation, bolts can be used for fixing, making disassembly and maintenance easy.
2. High Load Capacity
The metal sleeve expands to form a reliable mechanical interlock with the concrete.
3. Flush Installation
After installation, the anchor can be flush with the substrate surface, suitable for confined spaces.
4. Easy to Use
Simple installation: just drill, insert, and tap to expand.
5. Multiple Material Options
Meets corrosion resistance requirements in different environments.
Product Parameters
Product Name:
Drop-In Anchor
English Name:
Drop In Anchor
Material:
- Carbon Steel
- Stainless Steel 304
- Stainless Steel 316
Specifications:
M6-M20
Length:
25mm-100mm
Suitable Substrates:
- Concrete
- Stone
- Solid Brick
Surface Treatment:
- Zinc Plated
- Hot-Dip Galvanized
- Stainless Steel Natural Finish
Product Types
Standard Drop-In Anchor
(Drop In Anchor)
Suitable for general concrete fixing.
Long Drop-In Anchor
(Long Drop In Anchor)
Used for deeper installations to increase load capacity.
Stainless Steel Drop-In Anchor
(Stainless Steel Drop In Anchor)
Suitable for damp and corrosive environments.
Drop-In Anchor with Lip
(Drop In Anchor With Lip)
With a flange to limit installation depth.
Application Areas
Drop-In Anchors are widely used in:
- Air Conditioning Installation
- Pipe Supports
- Fire Protection Piping
- Cable Trays
- Steel Structure Installation
- Mechanical Equipment Fixing
- Construction Engineering
- Electrical Facilities
Packaging
According to customer requirements:
- Plastic Bag Packaging
- Small Box Packaging
- Plastic Box Packaging
- Carton Packaging
- Pallet Packaging
- Customer Brand Packaging











































