At Ananka Fasteners Pvt Ltd, we manufacture and supply fasteners certified to BS 1506. BS 1506 – Specification for carbon, low alloy and stainless steel bars and billets for bolting material to be used in pressure retaining applications. A now-withdrawn (historic) British base-material standard defining bar/billet grades for pressure-equipment bolting; largely superseded by BS EN 10269 and related EN bolting-material standards.
BS 1506 – Specification for carbon, low alloy and stainless steel bars and billets for bolting material to be used in pressure retaining applications. A now-withdrawn (historic) British base-material standard defining bar/billet grades for pressure-equipment bolting; largely superseded by BS EN 10269 and related EN bolting-material standards.
| Grade / Class | UNS / Designation | Type / Notes |
|---|---|---|
| 621 | 1Cr-0.5Mo low-alloy | General elevated-temperature bolting bar |
| 622 | 2.25Cr-1Mo low-alloy | Higher-temperature Cr-Mo bolting bar |
| 630 | 12Cr martensitic stainless | Corrosion/heat-resistant bolting |
| 640 / 660 | Austenitic stainless | High-temperature / corrosion resistant |
Minimum mechanical requirements per BS 1506.
| Grade / Class / Condition | Tensile Strength, min | Yield Strength, min | Elongation, min % | Hardness |
|---|---|---|---|---|
| 621 (1Cr-Mo) | 700-850 MPa (102-123 ksi) | 515 (75) yield min | 18 | – |
| 622 (2.25Cr-1Mo) | 700-850 MPa (102-123 ksi) | 515 (75) yield min | 18 | – |
| 630 (12Cr) | 700-850 MPa (102-123 ksi) | 525 (76) yield min | 16 | – |
| Grade | Key Composition, % |
|---|---|
| 621 | Cr approx 0.7-1.15, Mo 0.45-0.65, C approx 0.18-0.25 |
| 622 | Cr 2.0-2.5, Mo 0.9-1.2 |
| 630 | Cr 11.5-13.0, martensitic stainless |
Predecessor to BS EN 10269. Grade 621 approximates ASTM A193 B7/B16 territory (Cr-Mo), grade 630 approximates A193 B6 (12Cr), and 2.25Cr-1Mo (622) parallels A193 B16-class high-temperature bolting.
For the official BSI standards catalogue, see the BSI standards listing. This external reference is provided for standards identification; the purchaser should verify the current edition applicable to the order.
We supply BS 1506 fasteners — bolts, screws, studs, nuts and washers as applicable — for energy, petrochemical, marine, structural and general engineering service, in a full range of sizes and finishes.
For technical documentation and quotations, buyers can also review the Ananka Fasteners manufacturing and supply range or contact the team through the fastener enquiry and technical support page.
Ananka Fasteners supplies every lot with full material traceability and third-party testing on request.
BS 1506 – Specification for carbon, low alloy and stainless steel bars and billets for bolting material to be used in pressure retaining applications. A now-withdrawn (historic) British base-material standard defining bar/billet grades for pressure-equipment bolting; largely superseded by BS EN 10269 and related EN bolting-material standards.
Ananka Fasteners supplies 621, 622, 630, 640 / 660 to BS 1506. See the Grades / Classes Covered table above for full details of each grade.
Minimum tensile strength, yield strength, elongation and hardness requirements vary by grade — see the Mechanical Properties table above for the complete breakdown.
We supply BS 1506 fasteners — bolts, screws, studs, nuts and washers as applicable — for energy, petrochemical, marine, structural and general engineering service, in a full range of sizes and finishes.
Yes. For a quotation, provide the required fastener type, grade, nominal size, dimensional standard, quantity and any inspection or certificate requirements.
Need a fastener released to BS 1506 for an industrial project? Send the required fastener type, grade, size, quantity and certification requirements to Ananka Fasteners. Our team can review the requirement and provide technical and commercial information for standard or custom configurations.
Recommended RFQ details: BS 1506 requirement, material grade, fastener type, nominal size, dimensional standard, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Data compiled per BS 1506 and industry references; provided for reference only — confirm against the current edition of the standard and certified mill test reports before design use.
