Materials and grades
Match the requirement to the assembly.
Stainless steel 304 (B8)/ 316 (B8M) ASTM A193 B8 Class 1 / B8M Class 1 (Matched A194 Gr. 8/8M Nut) These references require written confirmation for the requested dimensions and quantity.
Stud Bolts · MR-009
ASME B18.31.2 / DIN 976-1 stainless-steel stud reference; ASTM A193 Grades B8/B8M
The stainless designation should be paired with the required corrosion environment, grade and mating components.
Reference information only. Final supply options are subject to supplier confirmation.

Product overview
Stud-bolt inquiries are assembly questions as much as product questions. Thread engagement, projection, mating nuts and service conditions should travel together. The stainless designation should be paired with the required corrosion environment, grade and mating components. 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.
State whether the requirement is continuous-thread, double-end, tap-end or flange bolting. Include the mating nut and any installation or end-protection requirement. Finish and end treatment can affect corrosion behaviour, fit and installation. Confirm the coating, lubricant or preservation method with the selected source.
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
The standard reference below is an inquiry anchor. It is not a claim that all listed dimensions, grades or finishes are available.
Reference Specifications
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 | ASME B18.31.2 / ASTM A193 B8 Cl.2 · inch · 1/2"-13 × 4" · UNC 13 · Full thread | Stainless steel304 · A193 B8 Cl.2 · Buyer specification required | For A194 Gr.8HeavyNut×2 | REFERENCE ONLY |
| Reference 2 | ASME B18.31.2 / ASTM A193 B8M Cl.2 · inch · 3/4"-10 × 4-1/2" · UNC 10 · Full thread | Stainless steel316 · A193 B8M Cl.2 · Buyer specification required | For A194 Gr.8MHeavyNut×2 | REFERENCE ONLY |
| Reference 3 | ASME B18.31.2M / ASTM A193 B8M Cl.2 · M · M20 × 130mm · Coarse thread (e.g. M20×2.5) · Full thread | Stainless steel316 · A193 B8M Cl.2 · Buyer specification required | For A194 Gr.8MHeavyNut×2 | 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-009 | REFERENCE ONLY |
| Reference dimensions | Metric reference: M8-M36, : M12×1.75, M16×2, M20×2.5, M24×3; Inch reference: 1/2"-1 1/2", : 1/2"-13 UNC, 5/8"-11 UNC, 3/4"-10 UNC; Length reference: 3"-12" / 80mm-300mm | BUYER CONFIRMATION REQUIRED |
| Material options | Stainless steel 304 (B8)/ 316 (B8M) | BUYER CONFIRMATION REQUIRED |
| Grade reference | ASTM A193 B8 Class 1 / B8M Class 1 (Matched A194 Gr. 8/8M Nut) | BUYER CONFIRMATION REQUIRED |
| Surface finish reference | (Passivated) | 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
The buyer remains responsible for the actual dimensions, material, grade, finish, quantity, destination and document requirement.
Technical review
This page remains noindex until content and source evidence are reviewed.
The stainless designation should be paired with the required corrosion environment, grade and mating components.
Technical documents, samples, inspection requirements and conformity records are reviewed only for the specific inquiry and selected source.
Technical FAQ
Not by itself. State the nut standard, grade, thread and quantity as part of the fastening set.
No. Use a controlled drawing or written dimensions and require source confirmation.
It organizes a product-specific inquiry. It does not confirm inventory, supplier relationship, price, MOQ, lead time, certification or delivery.
State the exact revision, dimensions, material or grade, finish, quantity, destination and required documents. The stainless designation should be paired with the required corrosion environment, grade and mating components.
Related products
Stud Bolts · MR-009 inquiry
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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