PRODUCTHeavy Hex Structural Bolt ASTM A490 Alloy Steel Fastener for Heavy Steel Construction Bridges and Buildings
ASTM A490 Heavy Hex Structural Bolts are alloy steel fasteners for heavy steel construction, bridges, and buildings. The standard reference diameter range is 1/2″–1-1/2″. Send the required diameter, length, and quantity to confirm availability and request a quotation.
- Material
- Alloy Steel
- Standard
- Standard Designation
- Strength Grade
- A490
Product Details
The A490 Heavy Hex Structural Bolt combines a heavy hex head with an alloy steel body for structural fastening. The external hex head provides a wrenching surface for tightening during assembly.
For construction orders specifying A490 bolts, the purchase specification should identify the bolt grade, diameter, and length together. A project drawing or bolt schedule helps distinguish each item when several sizes are required for different connections.

Product Specifications
| Item | Details |
|---|---|
| Product Name | Heavy Hex Structural Bolt |
| Standard Designation | ASTM A490 |
| Strength Grade | A490 |
| Material | Alloy Steel |
| Head Type | Heavy Hex Head |
| Bolt Diameter — Standard Reference | 1/2″–1-1/2″ |
| Bolt Length | Specify the required length for quotation |
| Size Availability | Subject to confirmation for the requested diameter and length |
| Main Applications | Heavy Steel Construction, Bridges, Buildings |
| Packaging | Carton or Bag Packing |
The diameter range above is a standard reference. Please provide the required bolt diameter, length, and quantity so actual size availability can be confirmed during quotation.
Applications
Heavy steel construction projects specifying A490 bolts
Bridge steelwork connections
Building steel structure assembly
Follow the fastening requirements stated on the project drawing. Where the purchase includes several connection types, include drawing references or item numbers to identify the bolts required for each location.

Size Selection and Project Ordering
List each bolt diameter and length separately, with the quantity required for that size. Include any thread details, finish requirements, or inspection requirements specified by the project for review before order confirmation.
For repeat orders, provide the previous purchase specification or approved drawing. For new construction projects, a bolt schedule or bill of materials helps keep the quotation aligned with the intended connections.
Information Needed for a Quote
Product and grade: A490 Heavy Hex Structural Bolt
Required bolt diameter and length
Quantity for each size
Drawing, bolt schedule, or project specification, if available
Any specified finish or inspection requirements for review
Carton or bag packing preference
FAQ
1.What material is used for this A490 bolt?
The material listed for this product is alloy steel.
2.What is the strength grade?
The product grade is A490. Include the grade together with the required bolt dimensions when submitting an inquiry.
3.What diameter range can I use as a reference?
The standard reference diameter range is 1/2″–1-1/2″. Availability for the specific diameter and length must be confirmed during quotation.
4.What bolt lengths are available?
Send the length required by your drawing or purchase specification. The requested diameter and length combination will be reviewed before order confirmation.
5.Which applications is this product intended for?
Heavy steel construction, bridges, and buildings where the project specifies A490 structural bolts.
6.Can I send a project bolt list for quotation?
Yes. Include the grade, dimensions, quantities, and relevant drawing references so each item can be identified clearly.
7.What packaging is available?
Carton or bag packing. State your preferred packing method when requesting a quotation.
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Preparing anA490 boltorder for a steel structure, bridge, or building project?
Send your bolt scheduleor list the required diameters, lengths, and quantities. Include the project specification and any additional purchase requirements so availability and quotation details can be checked against your order.