Materials and grades
Match the requirement to the assembly.
Carbon steel (Medium-carbon steel, Grade DH) ASTM A563 Grade A / Grade C / Grade DH These references require written confirmation for the requested dimensions and quantity.
Nuts & Washers · MR-013
ASTM A563 heavy hex nuts
ASTM A563 (inch-series heavy hex nut reference)
The inquiry is organized around ASTM A563 (Inch-series, US standard); the final source, revision and acceptance criteria remain order-specific.
Reference dimensionsMetric reference: M6-M100 (MetricASTM A563M, M12-M36); Inch reference: 1/4"-4" UNC/UNF/8UN, 1/2"-1-1/2"; Length reference: buyer specification required
Material / gradeCarbon steel (Medium-carbon steel, Grade DH) · ASTM A563 Grade A / Grade C / Grade DH
Content review before indexing · MARKET REFERENCE ONLY
Reference information only. Final supply options are subject to supplier confirmation.
Product overview
A focused starting point for procurement.
Matched nut and washer inquiries should be defined with the mating bolt or stud so thread fit, bearing geometry and mechanical requirements remain compatible. The inquiry is organized around ASTM A563 (Inch-series, US standard); the final source, revision and acceptance criteria remain order-specific. This page is a market-reference starting point for a specification-led inquiry, not a statement of stock, supply capacity or a fixed manufacturing source.
Identify the mating fastener, washer series, nut style, hardness or property class and the required set quantities before reviewing an offer. The finish must be checked against the mating fastener, corrosion environment and dimensional tolerance. Do not substitute by color alone.
HEXVARO is a China-based sourcing and coordination brand. The page does not claim factory ownership, stock, price, MOQ, lead time, certification or a fixed supplier relationship. Final supply options are subject to supplier confirmation.
Applicable standards
State the exact standard and revision.
The standard reference below is an inquiry anchor. It is not a claim that all listed dimensions, grades or finishes are available.
Reference Specifications
Use reference data to make the RFQ specific.
These are common inquiry specifications from the market-reference record. They are not an Available Sizes table and do not create a combined catalogue of materials, grades, dimensions or finishes.
| Reference | Inquiry geometry | Material / grade / finish | Mating components | Status |
|---|---|---|---|---|
| Reference 1 | ASTM A563 / ASME B18.2.2 · inch · 3/4"-10 × — · UNC 10 · — | Alloy steel · DH grade · Hot-dip galvanized (HDG+) | For A325StructuralBolt | REFERENCE ONLY |
| Reference 2 | ASTM A563 / ASME B18.2.2 · inch · 7/8"-9 × — · UNC 9 · — | Alloy steel · DH grade · Hot-dip galvanized (HDG+) | For A325StructuralBolt | REFERENCE ONLY |
| Reference 3 | ASTM A563 / ASME B18.2.2 · inch · 1"-8 × — · UNC 8 · — | Alloy steel · DH grade · Hot-dip galvanized (HDG+) | For A325StructuralBolt | REFERENCE ONLY |
Each row is a reference inquiry example. Final supply options are subject to supplier confirmation; the source workbook contains no completed factory confirmation or evidence path for these rows.
| Field | Reference or buyer input | Status |
|---|---|---|
| SKU | MR-013 | REFERENCE ONLY |
| Reference dimensions | Metric reference: M6-M100 (MetricASTM A563M, M12-M36); Inch reference: 1/4"-4" UNC/UNF/8UN, 1/2"-1-1/2"; Length reference: buyer specification required | BUYER CONFIRMATION REQUIRED |
| Material options | Carbon steel (Medium-carbon steel, Grade DH) | BUYER CONFIRMATION REQUIRED |
| Grade reference | ASTM A563 Grade A / Grade C / Grade DH | BUYER CONFIRMATION REQUIRED |
| Surface finish reference | Zinc plated, Hot-dip galvanized (Structural), , | BUYER CONFIRMATION REQUIRED |
| Supply status | Supplier, stock, price, MOQ and lead time are not established by this page. | UNCONFIRMED |
Final supply options are subject to supplier confirmation.
RFQ Specification Checklist
Send the details that make comparison useful.
The buyer remains responsible for the actual dimensions, material, grade, finish, quantity, destination and document requirement.
- Product: ASTM A563 heavy hex nuts
- SKU: MR-013
- Standard reference: ASTM A563 (inch-series heavy hex nut reference)
- Actual dimensions, material, grade, surface finish, quantity, destination and required documents must be confirmed by the buyer
- Required inspection, traceability, packaging and labelling documents
- Any drawing number, revision, accepted deviation or installation requirement
Technical review
Keep special standards and assemblies separate.
This page remains noindex until content and source evidence are reviewed.
The inquiry is organized around ASTM A563 (Inch-series, US standard); the final source, revision and acceptance criteria remain order-specific.
Technical documents, samples, inspection requirements and conformity records are reviewed only for the specific inquiry and selected source.
Technical FAQ
Clarify the requirement before comparing offers.
Can the washer and nut be quoted separately?
They can be discussed separately, but the RFQ should still identify the mating fastener and assembly requirement.
Does nominal size prove compatibility?
No. Thread, bearing dimensions, hardness, grade and finish must be checked together.
What does this MR-013 page confirm?
It organizes a product-specific inquiry. It does not confirm inventory, supplier relationship, price, MOQ, lead time, certification or delivery.
What should be stated with ASTM A563 (inch-series heavy hex nut reference)?
State the exact revision, dimensions, material or grade, finish, quantity, destination and required documents. The inquiry is organized around ASTM A563 (Inch-series, US standard); the final source, revision and acceptance criteria remain order-specific.
Related products
Follow the technical relationship.
Nuts & Washers · MR-013 inquiry
Have a part to source?
Send the controlled RFQ.
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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