DIN 6915 High-Strength Hex Nuts for Structural Bolting
DIN 6915 high-strength hex nuts for structural bolting, M12 to M36 — the HV-system partner nut of DIN 6914 large-head structural bolts — with the full collected 8-size table: widths across corners and flats, nut heights, and the source's reference mass per 1000 units.
Last updated: 2026-11
Specifications
DIN 6915 is the nut of the European structural HV bolting system: it pairs with DIN 6914 large-head structural bolts and the EN 14399-4/-6 washer line, where the connection is preloaded by the turn-of-nut method and every component in the set — bolt, nut, washer — is matched for strength and ductility. It is visibly taller than a standard hex nut of the same thread, and its widths across flats run one size larger than the DIN 934 dimension series — an M20 structural nut takes a 30 mm socket, not a WAF 30 confusion to be checked against the table. The collected table runs M12 to M36 with the e across-corners minimum, the m nut height (nominal and minimum), the s across-flats limits, and the source's reference mass per 1000 units — the figure a steelwork estimator prices a connection from. The DIN 6916 washer and the DIN 6914 bolt pages on this site complete the set. The 10K/8S property classes of the HV system are not tabulated on the collected page and stay per RFQ, as do materials and finishes.
| Standard | DIN 6915 — high-strength hex nuts for structural bolting (HV-system partner nut) |
|---|---|
| Series | M12 – M36 (8 sizes tabulated) |
| Tabulated geometry | Per size: pitch P, across-corners e min, nut height m (max=nominal size / min), across-flats s (max=nominal size / min), reference mass per 1000 units ≈ kg |
| System pairing | Pairs with DIN 6914 large-head structural bolts and the DIN 6916 / EN 14399-6 chamfered washer line; preloaded connections per the HV system |
| Materials / strength | Not tabulated by the collected specification — per RFQ (the HV 10K/8S class pairing is confirmed at quotation) |
| Nominal thread | P — Pitch | e — min | m — max=nominal size | m — min | s — max=nominal size | s — min | per 1000 units ≈ kg |
|---|---|---|---|---|---|---|---|
| M12 | 1.75 | 23.91 | 10 | 9.64 | 22 | 21.16 | 23.3 |
| M16 | 2 | 29.56 | 13 | 12.3 | 27 | 26.16 | 44.8 |
| M20 | 2.5 | 35.03 | 16 | 14.9 | 32 | 31 | 73.9 |
| M22 | 2.5 | 39.55 | 18 | 16.9 | 36 | 35 | 104 |
| M24 | 3 | 45.2 | 20 | 18.7 | 41 | 40 | 163 |
| M27 | 3 | 50.85 | 22 | 20.7 | 46 | 45 | 224 |
| M30 | 3.5 | 55.37 | 24 | 22.7 | 50 | 49 | 300 |
| M36 | 4 | 66.44 | 29 | 27.7 | 60 | 58.8 | 515 |
Materials
- Material, property class and finish specified per RFQ — the collected specification table covers geometry and reference mass only
- HV-system class pairing (10K nut with 10.9 bolt / 8S with 8.8) confirmed at quotation
Ordering & documentation
Documents
Shipments are backed by Mill Test Certificate (MTC), Dimensional Report, Salt Spray Test Report on request, with full batch traceability from raw material to finished product. Quality management follows the owner-confirmed compliance list: ISO 9001:2015, RoHS, REACH. Exact document sets are confirmed on the order.
Quotation
- The fastener family (DIN 6915 High-Strength Hex Nuts for Structural Bolting) plus the standard designation from your drawing — DIN / ISO / JIS / ASTM / ANSI, or a drawing for custom parts.
- Size (diameter and length), thread type (metric or inch), property class or grade, and coating or finish.
- Quantity per size and your target delivery date.
- Destination country, and any required documents (for example a mill test certificate) so the quote includes them.
Sample & supply
Minimum order quantity is 10,000 pieces. Stock items run 3–7 days. Quantities or variants outside the standard range are confirmed at quotation.
Storage & shipping
Parts are packed for export and shipped factory-direct to buyers in Europe, Asia, the Americas and the Middle East. Store fasteners dry and protected until installation, and keep coated parts in their packaging until use; specific packing and preservation requirements can be stated on the order and confirmed at quotation.
Frequently asked questions
How does DIN 6915 differ from a standard hex nut in a structural connection?
Three ways, all of them part of the HV preloading system. First, height: the taller m profile gives the nut thread engagement the preload demands. Second, width across flats: DIN 6915 runs one wrench size larger than the DIN 934 series for the same thread, so the socket plan for a steel package must follow the table, not habit. Third, system matching: HV connections are preloaded by controlled methods (turn-of-nut, combined method), and the nut is matched to the bolt and washer as a set — substituting a standard nut breaks the pairing and the guarantee that comes with it. Geometry from the table, class pairing confirmed at quotation.
What is the MOQ and lead time for this nut type?
The minimum order quantity is 10,000 pieces. Stock items ship in 3–7 days; non-stock items are confirmed at quotation. Common diameters in this nut type are widely stocked; confirm the exact schedule against quantity and size mix at quotation.
Request a Quote
Get factory-direct pricing from the manufacturer.
What to include in your inquiry
- ✓ Standard and property class (e.g. DIN 912, ISO 4762, class 8.8) — or a drawing for custom parts.
- ✓ Sizes, lengths and thread type (metric or inch).
- ✓ Quantity per size and your target delivery date.
- ✓ Destination country, plus any coating or finish requirement.
- ✓ Any documents you need with the shipment (e.g. mill test certificate) so the quote includes them.
- ✓ Your inquiry goes straight to the factory team by email and gets a reply within 24 hours.
- ✓ Factory-direct pricing
- ✓ Standard and custom specifications
- ✓ Factory-direct export to buyers in Europe, Asia, the Americas and the Middle East
- ✓ Full fastener family support