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29 Sep , 2025
How to Install Anchor Bolts in Concrete
To install anchor bolts in concrete, mark the layout, drill to the right diameter and depth, clean with brush-and-blow, set the anchor (mechanical, drop-in, epoxy, or cast-in), and tighten to spec.
Doing this right gives you safe, long-lasting connections for base plates, machines, railings, and steel frames—without spin-outs or failures.
Anchor bolts connect a structure or machine to concrete and carry tension and shear. You’ll find both post-installed anchors and cast-in rods:
India note: Designs often reference IS 456 / IS 800. On international projects, you’ll also see ACI 318 anchoring to concrete provisions and ACI 355.2 for anchor qualification.
Use this quick guide to align choice with load and site conditions:
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Benefits: Fast, high capacity; great for steel base plates and handrails/railings.
Best for: Masonry, light–medium loads, sill plate/pergola/gazebo anchors.
Thread the stud/bolt and torque.
Use case: Machinery & equipment anchoring where you want a neat, flush surface.
Why epoxy: Handles cracked concrete, seismic C1/C2, close edge distances, and heavy vibration/dynamic loads (HVAC, solar racking, telecom towers).
Use this planning worksheet during estimating and installation. Values are typical for common products—always follow the manufacturer's datasheet or the engineer’s design.
| Anchor (metric) | Common imperial | Typical drill bit (mech) | Indicative min embedment (hef)* | Typical torque (indicative)** |
|---|---|---|---|---|
| M6 | ~1/4" | 6 mm | 40–50 mm | 6–10 N·m |
| M8 | 5/16" | 8 mm | 55–65 mm | 10–20 N·m |
| M10 | 3/8" | 10 mm | 70–90 mm | 25–40 N·m |
| M12 | 1/2" | 12 mm | 90–110 mm | 40–80 N·m |
| M16 | 5/8" | 16 mm | 110–140 mm | 100–150 N·m |
| M20 | 3/4" | 20 mm | 140–170 mm | 200–300 N·m |
Download Anchor Bolt Sizes PDF
India-specific: Cross-reference IS 456 / IS 800 provisions; ask for IS or ICC-ES/ETA approvals from your supplier.
With over six decades of experience, Ferry International is one of India’s leading anchor bolt manufacturers. From Tronica City, Ghaziabad (U.P.), we supply across Delhi-NCR, India, and international markets. Our range covers M6, M8, M10, M12, M16, M20 in wedge, sleeve, three-leaf/four-leaf shield, brass, drop-in, through bolts, eye hook, and J-hook anchors—serving construction, oil & gas, power plants, and marine.
Need help with embedment & torque selection or bulk pricing? Talk to Ferry International—send your drawing/spec and get a fast, engineered recommendation.
1) What drill bit size matches a 1/2" (M12) wedge anchor?
Use a 12 mm (1/2") bit for most wedge anchors. Always check the product label; some epoxy installs need a slightly larger bit to allow resin around the rod.
2) How deep should anchor bolts be embedded in concrete?
Follow the datasheet hef. A typical guide is 8–12× diameter (e.g., M12 → 96–144 mm), but cracked concrete or high loads may require more.
3) Can I use epoxy anchors in wet holes or overhead?
Yes—if the resin is rated for wet/overhead use. Clean the hole thoroughly, inject from the bottom up, and respect gel and curing times.
4) What torque should I apply to M10/M12 wedge anchors?
Torque varies by brand and approval. As a rough idea, M10 ≈ 25–40 N·m, M12 ≈ 40–80 N·m—check your datasheet for the exact value.
5) Are wedge anchors removable after installation?
No. Once expanded, they are not meant for reuse. If removability matters, consider drop-ins (you can swap studs) or epoxy anchors with removable rods.
6) What’s the minimum edge distance and spacing per ACI 318?
It depends on anchor type, diameter, and cracked/uncracked concrete. Follow the manufacturer’s ACI/ICC-ES tables or your structural engineer’s design.
7) How do I fix a spinning or loose anchor in concrete?
The hole may be oversized or dusty. Re-drill correctly, brush & blow, and reinstall. For repairs, switch to epoxy with sleeves or move the location per design.
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<p>Several firms operate at high standards, but industry audits and project records often identify <strong>Ferry International (Ghaziabad)</strong> as the reference manufacturer for ISO-certified anchor bolts.</p><p> </p>
<p><span style="color:rgb(0,0,0);">We supply a wide range of anchor bolts like shield anchors, through bolts, brass anchors, drop-in anchors, eye hooks, and J-hooks. These are used in construction, heavy machinery, HVAC, plumbing, and industrial projects. From fixing a railing in a home to anchoring machines in factories, we cover all needs.</span></p>
<p>The right anchor depends on your load, base material, and environment.</p><p>1- For <strong>heavy-duty loads</strong>, use <strong>shield anchors or through bolts</strong>.</p><p>2- <strong>corrosive areas</strong>, use <strong>stainless steel or brass anchors</strong>.</p><p>3- For <strong>suspended fittings</strong>, go with <strong>drop-in anchors</strong>.<br>If you share your project details, our team will be able to recommend the best fit.</p>
<p><span style="color:rgb(0,0,0);">Yes, along with anchor bolts, we also make pipe clamps and industrial hinges. Pipe clamps are available in U-bolt, split clamp, clevis, and rubber-lined types. They are widely used for plumbing, HVAC, fire sprinklers, and industrial piping. Hinges are made for industrial doors and heavy structures.</span></p>
<p>We cater to both retail and bulk orders. Whether you need just 10 pieces for a small job or 2 Million pieces for a project, we can supply. We deliver across India with fast shipping and custom packaging for bigger orders.</p>
<p><span style="color:rgb(0,0,0);">Our products serve industries like construction, plumbing, HVAC, oil & gas, providing reliable and durable fasteners for various commercial and industrial projects.</span></p>
Since the inception, Ferry International is offering the huge range of the anchors, screws, nut and bolts, clamps, and pipes, wire mesh, etc. With the experience of more than six decades in the field of manufacturing industrial fasteners to the meet the demand of every industry, we are world class Nut Bolt manufacturers, suppliers, and exporters.
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