Carbon Steel Anchor Bolt — Factory Direct Supplier | Huaxia-Steel
Carbon steel anchor bolts are heavy-duty fasteners embedded in concrete to secure structural steel columns, equipment bases, signs, and towers to foundations. They transfer tension, shear, and overturning forces from the superstructure into the concrete. Huaxia-Steel manufactures anchor bolts to ASTM F1554, ASTM A307, and ASTM A449 standards, in diameters from 1/2″ to 4″ (M12 to M100), with custom hook, L-shape, and headed configurations. Full mill certification and global shipping available.
Product Overview
Anchor bolts are the critical link between a steel structure and its concrete foundation. Unlike standard bolts, anchor bolts are embedded in wet concrete during pouring (cast-in-place) or installed in drilled holes with epoxy adhesive (post-installed). The most common types are L-bolts (90° hook), J-bolts (180° hook), headed bolts (with a forged or welded nut/plate at the embedded end), and straight rods with double nuts. The embedded portion provides pull-out resistance through mechanical interlock (hook or head) or bond (straight rod with epoxy).
Specification
Value
Specification Table: Dimensions & Capacity
L-Bolt Anchor — ASTM F1554 Grade 55
| Diameter (in) | Diameter (mm) | Hook Length (mm) | Standard Length (mm) | Thread Length (mm) | Tensile Capacity (kN) | Weight (kg/pc) |
|---|---|---|---|---|---|---|
| 1/2 | 12.7 | 75 | 300 | 75 | 44 | 0.3 |
| 5/8 | 15.9 | 95 | 400 | 100 | 69 | 0.6 |
| 3/4 | 19.1 | 115 | 450 | 115 | 100 | 1.0 |
| 7/8 | 22.2 | 135 | 500 | 130 | 136 | 1.5 |
| 1 | 25.4 | 155 | 600 | 150 | 178 | 2.4 |
| 1-1/4 | 31.8 | 195 | 750 | 190 | 278 | 4.7 |
| 1-1/2 | 38.1 | 230 | 900 | 230 | 400 | 8.1 |
| 2 | 50.8 | 305 | 1200 | 305 | 712 | 19.2 |
| 2-1/2 | 63.5 | 380 | 1500 | 380 | 1,112 | 37.5 |
| 3 | 76.2 | 460 | 1800 | 460 | 1,601 | 64.3 |
Tensile capacity = nominal tensile strength × tensile stress area. Actual design capacity must include concrete breakout, pull-out, and pyout per ACI 318 Appendix D.
Headed Anchor Bolt — ASTM F1554 Grade 105
| Diameter (in) | Head Diameter (mm) | Head Thickness (mm) | Yield Strength (MPa) | Tensile Strength (MPa) | Min Embedment (mm) |
|---|---|---|---|---|---|
| 3/4 | 45 | 15 | 724 | 862 | 300 |
| 7/8 | 52 | 18 | 724 | 862 | 350 |
| 1 | 60 | 20 | 724 | 862 | 400 |
| 1-1/4 | 75 | 25 | 724 | 862 | 500 |
| 1-1/2 | 90 | 30 | 724 | 862 | 600 |
| 2 | 120 | 40 | 724 | 862 | 800 |
Available Grades
| Standard | Grade | Yield (MPa) | Tensile (MPa) | Application |
|---|---|---|---|---|
| ASTM F1554 | Grade 36 | 248 | 400-552 | General purpose, light structures |
| ASTM F1554 | Grade 55 | 379 | 517-655 | Most common — buildings, equipment bases |
| ASTM F1554 | Grade 105 | 724 | 862-1034 | Heavy structures, seismic, wind towers |
| ASTM A307 | Grade B | — | 414-552 | General structural anchors |
| ASTM A449 | — | 586 | 724-896 | High-strength, medium diameter |
| ASTM A193 | B7 | 724 | 862+ | High-temperature / pressure applications |
Manufacturing Standards
- ASTM F1554: Standard specification for anchor bolts (the primary US anchor bolt standard)
- ASTM A307: Carbon steel bolts and studs, 60,000 PSI tensile strength
- ASTM A449: Hex cap screws, bolts, and studs with higher strength
- ASTM A193 B7: Alloy steel bolting for high-temperature service
- ACI 318 Appendix D (Chapter 17): Anchoring to concrete — design requirements for tension and shear
- IBC 2018 Section 1905.1.8: International Building Code anchor bolt provisions
- AISC 360: Design of anchor bolts connecting steel to concrete
- EN 1992-4 (Eurocode 2 Part 4): European standard for design of fastenings for use in concrete
Applications
| Industry | Application | Recommended Grade | Diameter Range |
|---|---|---|---|
| Buildings | Column base plates, shear walls | F1554 Gr.55 | 3/4″ to 1-1/2″ |
| Equipment | Pump bases, compressor foundations | F1554 Gr.55 or Gr.105 | 3/4″ to 2″ |
| Petrochemical | Vessel skirts, pipe rack columns | F1554 Gr.105 / B7 | 1″ to 3″ |
| Power & Energy | Wind turbine foundations | F1554 Gr.105 (cage) | 1-1/2″ to 3″ |
| Transportation | Sign structures, light poles, barrier rails | F1554 Gr.55 | 3/4″ to 1-1/4″ |
| Marine | Dock fender systems, mooring bollards | F1554 Gr.55, HDG | 1″ to 2-1/2″ |
| Precast | Panel connections, tilt-up braces | A307 Gr.C / F1554 Gr.36 | 1/2″ to 1″ |
Quality Assurance
- Material certification: EN 10204 3.1 MTC with full chemistry and mechanical properties (yield, tensile, elongation)
- Tensile testing: 1 sample per heat lot (minimum), per ASTM F1554 Section 7
- Thread inspection: 100% GO/NO-GO gauging (2A class for UNC, 6g for metric)
- Dimensional verification: diameter, length, thread length, hook angle (90° ±5°), head dimensions
- Straightness: max 1:500 (2mm per meter) for long anchor bolts
- Surface treatment: HDG per ASTM A153 Class C (zinc coating 43-86μm depending on diameter)
- Welded head inspection: visual + magnetic particle testing (when headed bolts have welded plates)
- Third-party inspection: SGS, BV, TUV available; shop survey per ASTM F1554 Supplementary Requirement S5
Packaging & Shipping
| Package Type | Quantity | Weight (kg) | Notes |
|---|---|---|---|
| Bundle (wire tied) | 10-50 pcs | 20-100 | Standard for medium bolts |
| Wooden case | 5-20 pcs | 15-100 | Large diameter (2″+) or HDG |
| Crate | 20-100 pcs | 100-500 | Bulk orders |
| Pallet | Multiple bundles | 500-2000 | ISPM-15 treated |
Anchor bolts are protected with thread protectors (plastic caps or tape) to prevent damage during transport. HDG anchor bolts are separated from plain bolts to prevent zinc contamination. Each bundle includes a tag with heat number, grade, size, and quantity.
Conclusion
Carbon steel anchor bolts are the foundation of every steel structure — their failure can be catastrophic. Selecting the right grade (F1554 Gr.36/55/105), configuration (L-bolt, headed, or straight with double nut), and surface treatment ensures decades of reliable service. Huaxia-Steel manufactures anchor bolts from 1/2″ to 4″ diameter, with custom lengths and configurations, full mill certification, and global shipping to construction and industrial projects worldwide.
Need carbon steel anchor bolts for your project? Contact Huaxia-Steel for factory-direct pricing, custom configurations, full MTC, and global shipping.
