Large Diameter Bolts
M16-M64 large bolts for steel structure, bridge, machinery, and power projects.
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Industrial fasteners for heavy-duty project supply.
FASNA manufactures and supplies large diameter bolts, extra long bolts, heavy hex bolts, stud bolts, anchor bolts, foundation bolts, nuts, washers, and custom fasteners for industrial construction and equipment applications.
Primary manufacturing range
Large bolts and long bolts remain the core focus
The product range is organized for procurement teams that need clear specifications, factory review, coating options, and matched components.
Stud Bolts
Threaded studs for flanges, petrochemical plants, power plants, and machinery.
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Anchor & Foundation Bolts
Project anchor bolts for concrete foundations, steel columns, and equipment bases.
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Complete industrial fastener supply
Matched components for project procurement
When buyers need more than one bolt type, FASNA can quote assemblies and related fasteners together to simplify purchasing and packing.
Specification guide
Common quotation range
| Item | Available Range | Notes |
|---|---|---|
| Diameter | M16-M64 | Large diameter bolt focus |
| Length | 80-1000mm | Extra long production available |
| Grade | 4.8 / 8.8 / 10.9 / 12.9 | According to standard or project requirement |
| Surface | Hot dip galvanized, zinc plated, black, dacromet, PTFE | Selected by application and corrosion requirement |
| Supply | Bolts, nuts, washers, rods, anchors, custom fasteners | Single product or matched assembly quotation |
Send your product list for factory review
Include size, length, grade, surface treatment, quantity, standard or drawing, destination port, and packing requirement.