Drop-In Anchors are heavy-duty, internally threaded anchors designed for use in solid concrete, brick, or stone. Installed by dropping the anchor into a pre-drilled hole and expanding it with a setting tool, they provide a secure, flush-mounted threaded socket for bolts or screws. Manufactured from stainless steel (304/316), carbon steel (zinc-plated), or alloy steel, they are ideal for applications requiring high tensile and shear strength in static or seismic loads.
- Material:
- Stainless Steel: 304 (A2) for general corrosion resistance; 316 (A4) for marine/chemical environments.
- Carbon Steel: Grade 8.8 (zinc-plated or hot-dip galvanized).
- Alloy Steel: ASTM A193 Grade B7 (heat-treated for high-temperature applications).
- Size Range:
- Diameter: 1/4"–2" (imperial) / M6–M52 (metric).
- Length: 1"–12" (25–300 mm, matching drill hole depth).
- Design Features:
- Split Sleeve: Expands radially when set, creating a mechanical bond with the substrate.
- Internal Threads: Full-length, precision-cut (UNC/UNF or metric) for bolt compatibility.
- Flush Mount: No protrusion above the surface, ideal for floor or wall applications.
- Load Capacity:
- Tensile Strength: 2,000–25,000 lbs (907–11,340 kg) per anchor.
- Compliance: Meets ANSI/ACI 318 (USA) and EN 1992-4 (Europe) for structural use.
- Standard Stainless Steel 304 (1/2"–1"): 5,000 pieces (in-stock sizes).
- Carbon Steel HDG (M12–M24): 2,000 pieces (industrial-grade).
- Oversized Anchors (1.5"–2"): 1,000 pieces (custom manufacturing).
Factory Advantages: ISO 9001-certified production, magnetic particle inspection (MPI) for alloy steel anchors, and support for custom thread types or non-standard lengths with lead times of 15–30 days.
- Industrial Flooring: Securing heavy machinery, conveyors, and storage racks.
- Commercial Construction: Anchoring curtain walls, handrails, and steel framework to concrete.
- Transportation: Mounting vehicle restraints, bollards, and weigh scales in warehouses.
- Utilities: Fixing electrical panels, cable trays, and pipeline supports in power plants.
- Easy Installation: No special tools required beyond a drill and setting tool (e.g., impact driver).
- Corrosion Resistance:
- 316 stainless steel: 1,000+ hours salt spray (ASTM B117).
- Hot-dip galvanized carbon steel: 1,500+ hours salt spray for outdoor use.
- Vibration Resistance: Expansion design locks the anchor in place, reducing loosening risk in dynamic environments.
- Fire Rating: Compliant with ASTM E119 for fire-resistant construction projects.
- Material Grades: 410 SS (martensitic, high hardness) or 2205 duplex SS for extreme loads.
- Coatings: Dacromet (2,000+ hours salt spray) or zinc-nickel for military specifications.
- Bespoke Designs:
- Extended thread length for thick fixtures.
- Countersunk top for seamless tile or carpet installation.
- Load Guarantee: Factory-tested to 150% of stated capacity for safety redundancy.
- Documentation: Full traceability with material test reports (MTR) and installation guides.
- Sustainability: Recyclable metal components and low-energy manufacturing processes.
Contact Us
Request a quote for drop-in anchors tailored to your concrete fastening needs! Factory-direct supply ensures reliable performance in industrial, commercial, and infrastructure projects worldwide.
JH Bolt Co., Ltd is a professional manufacturer of different types of bolts with more than 15 years rich manufacturer experience. The factory area is more than 1500 squares with more than hundreds different types ofnevproduction machines. There are more than 50 people who work here for at least 5 years.With quality &customer frst, staffs second, then company, Our products are widely recog-nized and trusted by users all over the world. Proft for the development of communication, We are here for you 12 hours a day, 7 days a week!
