At Ananka Fasteners Pvt Ltd, we manufacture and supply fasteners certified to BS EN 14399-4. High-strength structural bolting assemblies for preloading – Part 4: System HV hexagon bolt and nut assemblies. Covers preloadable hexagon head bolts and nuts (short-thread ‘HV’ geometry) in sizes M12 to M36 for use in slip-resistant and preloaded steel connections, per the EN 14399-1/-2 suitability-for-preloading system.
High-strength structural bolting assemblies for preloading – Part 4: System HV hexagon bolt and nut assemblies. Covers preloadable hexagon head bolts and nuts (short-thread ‘HV’ geometry) in sizes M12 to M36 for use in slip-resistant and preloaded steel connections, per the EN 14399-1/-2 suitability-for-preloading system.
| Grade / Class | UNS / Designation | Type / Notes |
|---|---|---|
| Bolt 10.9 | EN ISO 898-1 class 10.9 | System HV hexagon head, M12-M36 |
| Nut 10 | EN ISO 898-2 class 10 | System HV hexagon nut, short height |
Minimum mechanical requirements per BS EN 14399-4.
| Grade / Class / Condition | Tensile Strength, min | Yield Strength, min | Elongation, min % | Hardness |
|---|---|---|---|---|
| Bolt class 10.9 | 145 (1000) | 131 (900) | 9 | 320-380 HV |
| Nut class 10 | proof-load matched to 10.9 bolt | – | – | 272-353 HV (>=M16) |
| Grade | Key Composition, % |
|---|---|
| Bolt 10.9 | Alloy or C/CB steel, quenched & tempered; C 0.20-0.55, P<=0.025, S<=0.025 |
| Nut 10 | C/alloy steel, quenched & tempered |
System HV counterpart to System HR (BS EN 14399-3); broadly comparable in strength to ASTM A490 / F3125 Gr A490 (10.9-equivalent) preloaded assemblies. Bolt/nut based on EN ISO 898-1/-2.
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 EN 14399-4 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.
High-strength structural bolting assemblies for preloading – Part 4: System HV hexagon bolt and nut assemblies. Covers preloadable hexagon head bolts and nuts (short-thread ‘HV’ geometry) in sizes M12 to M36 for use in slip-resistant and preloaded steel connections, per the EN 14399-1/-2 suitability-for-preloading system.
Ananka Fasteners supplies Bolt 10.9, Nut 10 to BS EN 14399-4. 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 EN 14399-4 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 EN 14399-4 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 EN 14399-4 requirement, material grade, fastener type, nominal size, dimensional standard, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Data compiled per BS EN 14399-4 and industry references; provided for reference only — confirm against the current edition of the standard and certified mill test reports before design use.
