Bolts
High-Tensile Structural Bolts Supplier
As a supplier of high-tensile structural bolts, we hold ready stock across common sizes and grades for fast turnaround on repeat and project orders.
As a supplier, we act as your ongoing sourcing partner — whether that means matching an existing specification, filling a recurring order schedule, or sourcing a specific grade or finish you can't get reliably elsewhere.
This role suits buyers who've already settled on a specification and need a dependable source for it over time, rather than re-evaluating quality and pricing on every order — the relationship is built around consistency against an agreed baseline.
High-strength friction-grip bolting works on a principle that surprises people outside structural engineering: the joint doesn't primarily rely on the bolt shank resisting shear at all. Instead, the bolt clamps the connected plates together so tightly that friction between the plates themselves transfers the load — which is why installation torque (or the direct-tension method used to verify it) matters as much as the bolt's material grade.
Minimum Order — Container Quantity (Approx.)
A standard 20ft container (~20 tons) holds approximately 60,000-100,000 sets of high-tensile structural bolt assemblies (bolt, nut, washers) in common sizes (M16-M20). Exact quantity depends on size and grade and is confirmed at quote time.
You don't need a full container to order. Hurain Engitech & Trade — the group Global Fasteners Exports operates under — regularly ships smaller, partial-container (LCL) orders of just a few pallets or boxes for buyers who don't yet need FCL volume, consolidated with other cargo to keep freight cost reasonable.
Specifications
Standards
ASTM A325 (Type 1/3), ASTM A490, IS 3757, EN 14399.
Assembly
Supplied as matched sets — bolt, nut, and hardened washers — to ensure certified proof-load performance.
Size range
M12 to M36 metric; 1/2" to 1 1/2" imperial.
Finish
Plain, hot-dip galvanized, or mechanically galvanized (Type 3 weathering steel on request).
Applications
Structural steel fabrication
Beam, column, and truss connections in buildings and industrial structures.
Bridges & infrastructure
High-load structural connections requiring certified friction-grip assemblies.
Towers & transmission structures
Lattice tower and transmission structure bolting.
Materials Available
Steel
Every assembly is proof-load and hardness tested to ASTM A325/A490 or IS 3757, with mill test certificates supplied for structural sign-off.
Our Process
- 1
Spec confirmation
Confirm standard, grade, size, and galvanizing requirement from structural drawings.
- 2
Forging & heat treatment
Hot forging followed by quench-and-temper heat treatment to reach the required tensile grade.
- 3
Proof-load testing
Batch proof-load and hardness testing with certification traceable to heat number.
- 4
Export packing
Matched bolt/nut/washer sets, boxed and documented for project-based export shipment.
HS Code & Customs Classification
Most fasteners fall under HS Chapter 73 (articles of iron or steel) or Chapter 74/76 for brass and aluminum items — the exact 8-10 digit subheading depends on the specific product and material. We include the HS code on the commercial invoice; confirm the applicable import duty with your customs broker, since rates vary by country and trade agreement.
Countries We Cover
Frequently Asked Questions
Related Products
Get a quote — High-Tensile Structural Bolts Supplier
Send your product list, quantities, and destination port for a quote within 1-2 business days.