Materials and grades
Match the requirement to the assembly.
Alloy steel (AISI 4140/4142 ) ASTM A193 B7 ( ≥125 ksi, ≤2-1/2") These references require written confirmation for the requested dimensions and quantity.
Stud Bolts · MR-007
ASTM A193 Grade B7 continuous-thread studs
ASME B18.31.2 continuous-thread stud; ASTM A193 Grade B7; ASTM A194 Grade 2H mating nut
The ASTM A193 route should be specified with the stud configuration, mating nuts and service-temperature requirement.
Reference dimensionsMetric reference: M12-M64 (ASME B16.5/B16.47 M16-M42); Inch reference: 1/2"-2 1/2", : ≤1" UNC (e.g. 3/4"-10, 7/8"-9, 1"-8), ≥1-1/8" 8UN; Length reference: 3"-24" ( 4"-12")/ 80mm-600mm
Material / gradeAlloy steel (AISI 4140/4142 ) · ASTM A193 B7 ( ≥125 ksi, ≤2-1/2")
Index-ready review · MARKET REFERENCE ONLY
Reference information only. Final supply options are subject to supplier confirmation.
Product overview
A focused starting point for procurement.
Stud-bolt inquiries are assembly questions as much as product questions. Thread engagement, projection, mating nuts and service conditions should travel together. The ASTM A193 route should be specified with the stud configuration, mating nuts and service-temperature requirement. 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
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 | ASME B18.31.2 / ASTM A193 B7 · inch · 3/4"-10 × 4-1/2" · UNC 10 · Full thread | Alloy steel · A193 B7 · Buyer specification required | For A194 2HHeavyNut×2 | REFERENCE ONLY |
| Reference 2 | ASME B18.31.2 / ASTM A193 B7 · inch · 7/8"-9 × 5" · UNC 9 · Full thread | Alloy steel · A193 B7 · Buyer specification required | For A194 2HHeavyNut×2 | REFERENCE ONLY |
| Reference 3 | ASME B18.31.2M / ASTM A193 B7 · M · M24 × 150mm · Coarse thread (e.g. M24×3) · Full thread | Alloy steel · A193 B7 · Buyer specification required | For A194 2HHeavyNut×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-007 | REFERENCE ONLY |
| Reference dimensions | Metric reference: M12-M64 (ASME B16.5/B16.47 M16-M42); Inch reference: 1/2"-2 1/2", : ≤1" UNC (e.g. 3/4"-10, 7/8"-9, 1"-8), ≥1-1/8" 8UN; Length reference: 3"-24" ( 4"-12")/ 80mm-600mm | BUYER CONFIRMATION REQUIRED |
| Material options | Alloy steel (AISI 4140/4142 ) | BUYER CONFIRMATION REQUIRED |
| Grade reference | ASTM A193 B7 ( ≥125 ksi, ≤2-1/2") | BUYER CONFIRMATION REQUIRED |
| Surface finish reference | Plain / black oxide and oil/ PTFE (Xylan/) / | 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 A193 Grade B7 continuous-thread studs
- SKU: MR-007
- Standard reference: ASME B18.31.2 continuous-thread stud; ASTM A193 Grade B7; ASTM A194 Grade 2H mating nut
- 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.
Content is structured for indexing review. Supplier availability remains unconfirmed.
The ASTM A193 route should be specified with the stud configuration, mating nuts and service-temperature requirement.
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.
Does a stud-bolt standard confirm the mating nut?
Not by itself. State the nut standard, grade, thread and quantity as part of the fastening set.
Can a product photograph confirm stud length or thread engagement?
No. Use a controlled drawing or written dimensions and require source confirmation.
What does this MR-007 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 ASME B18.31.2 continuous-thread stud; ASTM A193 Grade B7; ASTM A194 Grade 2H mating nut?
State the exact revision, dimensions, material or grade, finish, quantity, destination and required documents. The ASTM A193 route should be specified with the stud configuration, mating nuts and service-temperature requirement.
Related products
Follow the technical relationship.
Stud Bolts · MR-007 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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