DIN934 Hex Nut | SS316 ISO4032 Marine Grade Hexagon Nut
TheDIN934 Hex Nut, equivalent to ISO 4032 and EN 24032, is the most widely used metric hexagon nut in marine engineering and general industrial assembly. Manufactured with Type 1 full-height configuration and 6g thread tolerance, the Hexagon Nut DIN934 ensures consistent clamp load and repeatable torque values across all mating bolt grades from 4.8 to 10.9. The full ISO 4032 thread engagement depth—50-100% greater than a thin jam nut—distributes tensile load evenly across all engaged thread turns, preventing thread stripping under shock or cyclic loading conditions common in shipboard service.
In ship engine rooms, these Metric Hex Nuts secure pump motor mounting plates, heat exchanger saddle brackets, compressor isolation mounts, electrical panel frames, and auxiliary machinery foundations. The Stainless Steel Hex Nut variants—A2-70 (SS304) and A4-80 (SS316)—provide reliable corrosion resistance in salt-laden engine room atmospheres and topside deck applications. For seawater line flanges and below-waterline fittings, the SS316 Hex Nut with 2-3% molybdenum content delivers superior chloride pitting resistance versus standard 304 grade, meeting classification society material requirements for marine piping systems.
| Product Name | DIN934 Hex Nut / ISO4032 Hexagon Nut |
| Standard | DIN934 / ISO 4032 / EN 24032 |
| Type | Style 1 Full Hex Nut / Regular Metric Nut |
| Size Range | M1.6 – M64 |
| Thread Class | 6H (Standard) / Fine Pitch ISO 8673 Available |
| Material / Grade | Carbon Steel Gr.6 / Gr.8 / Gr.10 / SS304 A2-70 / SS316 Hex Nut A4-80 / 316L |
| Surface Finish | Plain / Zinc Plated / Hot-Dip Galvanized / Black Oxide / Dacromet |
| Proof Load (Gr.8) | ≥ 800 MPa (800 N/mm²) |
| Width Across Flats | Per DIN 934 / ISO 4032 Table (e.g. M20 = 30 mm SW) |
| Application | Engine Room Machinery / Piping Flange / Deck Equipment / General Marine Assembly |
| Certification | EN 10204 3.1 / ISO 9001 / LR / DNV / BV (on request) |
SINOFASTENER supplies DIN934 hex nuts and ISO4032 Hexagon Nuts from M1.6 to M64 in full stainless and carbon steel grades with complete EN 10204 3.1 material traceability. For vessels requiring Marine Grade Hex Nut with DNV GL, Lloyd's Register, or Bureau Veritas third-party inspection certificates, contact our team with vessel specification and required classification society details.
E-mail: sales@sinofastener.com | SINOFASTENER
