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Have Query ? Reach Out Us!
03 Oct , 2026
Drop-in anchors are female-threaded expansion anchors for permanent fixing in solid concrete. They create a flush threaded fixing point that can accept a compatible bolt or threaded rod after the anchor has been correctly installed. Ferry International lists drop-in anchors in M6 to M16 sizes, with zinc-plated steel, 304 stainless steel and 316 stainless steel options. See the listed drop-in anchor range and product details.
For bulk purchasing, the anchor size alone is not enough to specify the product. The concrete condition, fixture, required thread, installation environment, finish, quantity and project application all affect the correct selection. This guide separates the published product information from details that should be confirmed in the quotation process.
A drop-in anchor is an internally threaded mechanical anchor installed inside a pre-drilled hole in solid concrete. Its expansion mechanism engages within the hole, leaving the fixing point flush with the concrete surface. A compatible bolt or threaded rod can then be used for applications such as suspended services, supports and equipment mounting.
Ferry International’s product information describes its drop-in anchors as suitable for permanent fastening in solid concrete and compatible with standard bolts and threaded rods. They should not be treated as general-purpose anchors for hollow materials. If the base material is brick, block, hollow concrete or another substrate, request a separate product recommendation rather than assuming that a drop-in anchor is suitable.
The supplied product listing gives the following nominal dimensions. Measurements are subject to tolerances, so the final drawing or technical data should be confirmed before production approval.
| Anchor size | Listed anchor length | Listed thread length |
|---|---|---|
| M6 | 25 mm | 11 mm |
| M8 | 30 mm | 14 mm |
| M10 | 40 mm | 17 mm |
| M12 | 50 mm | 20 mm |
| M16 | 65 mm | 25 mm |
The product page identifies three material or finish choices:
These descriptions indicate the available options, not a blanket approval for every environment. Final material selection should consider humidity, chemical exposure, temperature, installation location and the project specification. Review the manufacturer-listed sizes and material options before issuing a purchase order.
Drop-in anchors are commonly considered where a flush, internally threaded fixing point is useful and the substrate is suitable solid concrete. Ferry International’s supplied product information lists these application areas:
Application suitability still depends on the actual load, spacing, edge distance, concrete quality, embedment and installation method. The supplied evidence does not provide project-specific load tables, allowable loads or seismic approvals. Those details should be requested for engineering review where the fixing is safety-critical or heavily loaded.
Start by confirming that the anchor will be installed in solid concrete. Include the concrete type or specification, known condition, thickness and any concerns about cracking or deterioration. A drop-in anchor should not be selected solely because the required bolt or threaded rod is available in a particular diameter.
Specify the required nominal thread—such as M6, M8, M10, M12 or M16—along with the compatible bolt or threaded rod. Also provide the fixture thickness and any washer, bracket or support arrangement so the available thread length can be assessed correctly.
The listed product dimensions provide anchor length and thread length for the published sizes, but they do not replace an application-specific installation assessment. Share the required embedment, hole depth and fixture details with the supplier before confirming the order.
For indoor projects, zinc-plated steel may be considered where the project specification permits it. Stainless steel options may be more appropriate in corrosive or exposed environments. The exact grade and finish should be stated in the RFQ, particularly for marine, chemical, coastal or washdown locations.
For machinery, overhead services, fire systems, seismic bracing or other safety-sensitive installations, ask for the applicable load data, installation instructions, test documentation and approval status. Do not infer a safe working load from the anchor diameter alone.
A complete enquiry helps a manufacturer price and review the requirement more accurately. Include:
Ferry International states that it supports bulk orders, customization discussions and pan-India delivery for the listed drop-in anchor range. Minimum order quantities, final pricing, available production options and delivery terms are not specified in the supplied product evidence and should be confirmed directly in the quotation.
Ferry International is presented in the supplied company information as a Ghaziabad, Uttar Pradesh-based manufacturer and supplier serving contractors, engineers, infrastructure buyers and industrial procurement teams. Its drop-in anchor listing identifies bulk-order support, factory-direct enquiry handling and options covering zinc-plated steel, 304 stainless steel and 316 stainless steel.
Buyers can also review the wider fixing anchor range if the project may require a different anchor type for concrete or masonry. For a project-specific recommendation, send the substrate, size, quantity, finish and application details rather than requesting a generic price.
Share your required size, quantity, concrete details, anchor dimensions, material or finish, application and delivery location with Ferry International. The supplier can then confirm the suitable configuration, commercial terms and any technical documents available for your project.
Send your drop-in anchor requirements or review the drop-in anchor product listing before contacting the sales team.
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Ferry International — bulk anchor bolt manufacturer from Ghaziabad, U.P., since 1957. We produce ASTM & IS-compliant Shield Anchors, Through Bolts, Drop-in Anchors, J-Hook Anchors, Eye Hook Anchors, Brass Anchors, and pipe clamps for construction, oil & gas, power, marine, solar, and infrastructure. Bulk RFQs only. ISO 9001:2015 | ZED Bronze | UDYAM Registered.
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