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Metric Class 10 Hex Flange Top Locknut, DIN 6927/DIN En 1664, Plain
Our Metric Class 10 Hex Flange Top Locknuts manufactured to DIN 6927 / DIN EN 1664 with a Plain Finish are high‑strength, all‑metal locking fasteners designed for demanding mechanical and industrial applications. Produced from carbon steel and heat‑treated to property class 10, these locknuts provide high clamp load capability and dependable resistance to loosening under vibration and dynamic loads.
The top‑lock prevailing‑torque design uses controlled thread deformation at the top of the nut to create a strong mechanical locking action without relying on nylon inserts. This all‑metal construction makes these locknuts suitable for elevated temperatures and harsh environments. The integrated hex flange distributes load evenly across the mating surface and eliminates the need for a separate washer. The plain (uncoated) finish preserves full material integrity and is ideal for controlled environments or applications where additional coatings will be applied after installation.
Engineered for strength and reliability, DIN 6927 / DIN EN 1664 Class 10 Hex Flange Top Locknuts are commonly used in automotive assemblies, machinery, equipment manufacturing, structural components, and industrial maintenance applications. The flange design simplifies assembly and improves load distribution, while the top‑lock feature provides consistent prevailing torque to resist loosening during service. The plain finish is well suited for indoor use, high‑temperature environments, or applications where coating removal or post‑installation finishing is required. Available in a wide range of metric thread sizes, these locknuts deliver dependable performance for OEM production, repair, and heavy‑duty service.
