Structural Bolts · MR-032
ASTM F3125 Grade A325 Structural Bolt Assemblies
ASTM F3125 Gr. A325 + A563 DH + F436 (assembly)
Structural fastening inquiries may require coordinated bolts, nuts and hardened washers. Submit the project specification, joint details, bolt grade, component standards, coating and inspection plan.
Product specifications, quantities and delivery requirements are reviewed individually to prepare a tailored quotation.
Product overview
Industrial fastener sourcing for your application.
Structural fastening inquiries may require coordinated bolts, nuts and hardened washers. Submit the project specification, joint details, bolt grade, component standards, coating and inspection plan. Provide applicable standard/edition, size, mating components, coating, project documents, quantity and delivery destination.
Common application
structural steelwork.
HEXVARO supplies this product from production in Hebei and Anhui, China. Reference MOQ 500 pcs per specification; lead time 10–15 days for stock items, 25–30 days for production.
Technical overview
Build a clear purchase specification.
Tell us which product configuration you need. A standard reference describes a product type; individual supply options are quoted against your request.
| RFQ field | What to specify |
|---|---|
| Product standard | ASTM F3125 Gr. A325 + A563 DH + F436 (assembly) |
| Diameter, pitch & length | Include the required size, thread and length in your inquiry |
| Material & property class | State the required material specification and strength grade |
| Surface finish | Specify the coating or corrosion-protection requirement |
| Quantity & destination | Provide quantity per size, destination and packaging needs |
Key dimensions
A325 heavy hex structural bolt dimensions, common sizes.
A325 bolts use ASME B18.2.6 heavy hex dimensions with a short thread length; the nut column is the matching A563 heavy hex nut. Values are taken from the full chart; the governing standard edition and your drawing control the order.
| Diameter | Width across flats F | Head height H | Thread length | Heavy hex nut A563 — across flats | Inquiry |
|---|---|---|---|---|---|
| 1/2 | 7/8 | 5/16 | 1 | 7/8 | Quote this size |
| 5/8 | 1-1/16 | 25/64 | 1-1/4 | 1-1/16 | Quote this size |
| 3/4 | 1-1/4 | 15/32 | 1-3/8 | 1-1/4 | Quote this size |
| 7/8 | 1-7/16 | 35/64 | 1-1/2 | 1-7/16 | Quote this size |
| 1 | 1-5/8 | 39/64 | 1-3/4 | 1-5/8 | Quote this size |
| 1-1/8 | 1-13/16 | 11/16 | 2 | 1-13/16 | Quote this size |
| 1-1/4 | 2 | 25/32 | 2 | 2 | Quote this size |
| 1-1/2 | 2-3/8 | 15/16 | 2-1/4 | 2-3/8 | Quote this size |
Full chart: A325 Structural Bolt Dimensions Chart (ASTM F3125)
Packing, shipping and documents
| MOQ | 500 pcs per specification; mixed sizes can be combined on one order |
|---|---|
| Lead time | 10–15 days for stock items, 25–30 days for production orders, confirmed in the quotation |
| Export packing | Inner boxes or bags labelled by size, export cartons, then palletized and stretch-wrapped; buyer labels and barcodes on request |
| Shipping ports | Tianjin, Ningbo, Shanghai, Shenzhen |
| Incoterms | EXW, FOB, CFR, CIF, DAP, DDP on request |
| HS code reference | HS 7318 covers most threaded steel fasteners; the 6-digit subheading depends on the product. Confirm the final code with your customs broker. |
| Certificate of origin | ACFTA Form E available on request for buyers in ASEAN countries such as Malaysia, Indonesia, Vietnam and the Philippines |
| Order documents | Commercial invoice, packing list and inspection records agreed in the quotation |
Common RFQ specifications
What buyers usually specify.
Typical size ranges, lengths, grades and finishes named in RFQs for this product type. This is a guide for writing the inquiry, not a stock list: each size, grade and finish is confirmed in the quotation.
| Sizes commonly quoted | 1/2–1-1/2 in; metric A325M M12–M36 |
|---|---|
| Typical lengths | 1-1/2–8 in |
| Grade | ASTM F3125 Grade A325 Type 1 (120 ksi minimum tensile) |
| Finishes | Plain, hot-dip galvanized (nuts tapped oversize) or zinc flake |
| Usually ordered with | A563 DH heavy hex nuts and F436 hardened washers, as assemblies |
Reference MOQ: 500 pcs per specification (subject to quotation). Sizes outside these ranges and quantities below 500 may still be submitted for review.
Applications & selection
Fit the fastener to the assembly.
Use these application contexts to help your engineering or purchasing team prepare a clear request.
- Structural steel connections
- Construction projects
- Engineered connection systems
The structural route is an assembly inquiry. Bolt, nut, washer, installation method and project documentation should be reviewed together.
Your RFQ
Send the specification, not a shopping cart.
Share the part number or drawing, quantity and destination. We'll review the request and prepare a tailored quotation.
- Product name and exact standard / revision
- Diameter, length, thread, material and grade
- Surface finish and service conditions
- Quantity per item, packaging and required documents
Technical FAQ
Answers for industrial buyers.
Are bolt assemblies supplied with nuts and washers?
A structural bolting assembly includes the components required by the applicable system and project specification. List the required bolt, nut, washer and surface-treatment details in the RFQ.
What documentation is provided?
Documentation requests should be stated before quotation, including the report type, issuing party, traceability and any relevant acceptance requirements.
Does ASTM F3125 equal EN 14399?
No. They are separate standards and assembly systems. The engineer, project documents and accepted conformity route control.
What does this page confirm?
It organizes a product-specific inquiry. Reference MOQ is 500 pcs per specification and lead time is 10–15 days for stock items or 25–30 days for production; price, certification documents and delivery are confirmed in your written quotation.
What should be stated with ASTM F3125 Gr. A325 + A563 DH + F436 (assembly)?
State the exact revision, dimensions, material or grade, finish, quantity, destination and required documents. The structural route is an assembly inquiry. Bolt, nut, washer, installation method and project documentation should be reviewed together.
Related products
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Structural Bolts · MR-032 inquiry
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Product name, SKU, standard reference and source URL are carried into the form so you can edit the actual dimensions, material, grade, finish, quantity, destination and document requirements.
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