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Low-temperature flanges
Stud-and-nut sets matched to the piping material specification.
ASTM A320 Grade L7 Stud BoltProduct form reference. Final thread, length, material, finish, marking and packing follow the approved RFQ.
Low-temperature pressure bolting
ASTM A320 Grade L7 Stud Bolt
ASTM A320/A320M Grade L7 stud bolts controlled by purchased edition, unit system, thread, dimensions, heat treatment, impact requirements, compatible nuts, finish, marking and project documentation.
- ASTM A320/A320M edition and Grade L7 explicitly stated
- Design minimum temperature and required impact-test basis
- Inch or SI unit system, diameter, thread and length definition
- Matching nut material, grade and impact requirement
- Heat lot, testing, marking, coating, packing and records
Catalogue ranges are RFQ guidance. Final compliance is controlled by the buyer-approved standard edition, drawing, specification and purchase order.
Quotation control
Quotation requirements
The exact standard or drawing, thread, length basis, material, finish, quantity and destination are confirmed before sourcing.
| Field | Product information | Order control |
|---|---|---|
| Requested product | Fully threaded ASTM A320/A320M Grade L7 stud bolt | Confirmed per RFQ |
| Standard / drawing | Purchased ASTM A320/A320M edition; unit systems and supplementary requirements controlled | Governing basis confirmed |
| Geometry | Diameter, thread series, nominal length basis, chamfer and end condition | Confirmed per RFQ |
| Material / grade | Grade L7 alloy-steel low-temperature bolting per purchased standard | Confirmed per RFQ |
| Assembly scope | Stud only or matched nuts to the separately specified standard, grade and impact basis | Confirmed per RFQ |
| Records | Heat treatment, impact and mechanical tests, heat lot, marking and certificates | Confirmed per RFQ |
Product overview
Low-temperature service must be defined in the purchase requirement
ASTM A320/A320M covers alloy and stainless bolting materials and components for low-temperature service. Grade L7 cannot be specified safely by grade name alone; the purchased edition, service temperature and required impact basis must be stated.
A visual similarity to B7 does not make the grades interchangeable. Heat treatment, mechanical properties, impact testing, nut pairing, marking and traceability remain controlled by the order.
What to include in your RFQ
- ASTM A320/A320M edition and Grade L7 explicitly stated
- Design minimum temperature and required impact-test basis
- Inch or SI unit system, diameter, thread and length definition
- Matching nut material, grade and impact requirement
- Heat lot, testing, marking, coating, packing and records
Common ordering range
Common RFQ selections
Common L7 stud-bolt enquiry fields. Final material, impact, size and assembly requirements follow the purchased standard and project documents.
| Selection | Common enquiry options | Control |
|---|---|---|
| Service basis | Design minimum temperature and applicable impact-test requirements | Confirmed per RFQ |
| Unit system | Inch-pound or SI order basis stated explicitly and kept separate | Confirmed per RFQ |
| Thread / dimensions | Series, fit, diameter, nominal length basis and end detail | Confirmed per RFQ |
| Nut pairing | Separately specified low-temperature nut material, grade and testing | Confirmed per RFQ |
| Finish / coating | Plain, black or specified coating only after compatibility review | Confirmed per RFQ |
| Documentation | Heat treatment, impact results, mechanical tests, marking and traceability | Confirmed per RFQ |
Custom supply: Non-standard thread, length, material, end treatment, marking, accessories and packing can be reviewed against a drawing, approved sample or complete specification.
Technical control
Use the governing document—not a catalogue assumption
ASTM A320/A320M applies to bolting for low-temperature service. The buyer must state the relevant service temperature, impact-test and nut requirements; this page does not assign a temperature rating or approve substitution with another alloy-steel grade.
Applications & supply
Options matched to the assembly requirement
Application examples guide the RFQ. Suitability must be verified for the actual connection, service environment and governing specification.
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Valves & fittings
Impact and mechanical test records controlled by the order.
03
Cold-service equipment
Coating, lubrication and installation reviewed separately.
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Documented projects
Heat lots, certificates, tagging and packing agreed in advance.
Quality & order coordination
A controlled route from RFQ to shipment
Inspection, certificates, traceability and packing are supplied only when agreed in the quotation and order.
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Requirement check
Standard edition, drawing revision and critical fields are recorded.
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Source matching
Cluster suppliers are compared against the confirmed requirement.
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Agreed inspection
Threads, dimensions, finish and documents follow the agreed plan.
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Packing follow-up
End protection, labels, bundles and shipment details are coordinated.
Related products
Complete your threaded fastener package
ASTM A193 Grade B7 Stud Bolt
Alloy-steel stud bolting for specified high-temperature or high-pressure service.
ASTM A193 Grade B8M Class 2 Stud Bolt
Stainless stud-bolt option where the order calls for Grade B8M Class 2.
DIN 976-1 Threaded Rod
A continuous-thread option for cut lengths, supports and general stud applications.
Product RFQ
Request a quotation for ASTM A320 Grade L7 Stud Bolt
Send a standard edition, drawing, BOM, approved sample or product list. Mark every thread, length, grade, test and document field that must not be substituted.