Hex Nuts, Lock Nuts & Flange Nuts â Sourcing from China
Overview
Nuts in Yongnian are typically produced by factories that specialize in nuts alone, running dedicated cold-forging and tapping lines. HDBolt sources from these specialists to ensure correct thread class, hardness, and dimensional accuracy.
Specifications
| Standards | DIN 934 (hex nut), DIN 985 (nylon insert lock nut), DIN 6923 (flange nut), ISO 4032, ASTM A194 2H |
|---|---|
| Property Class | Class 6, 8, 10, 12 |
| Size Range | M3 â M64 / #4 â 2-1/2" |
| Thread Type | Metric Coarse, Metric Fine, UNC, UNF |
| Finish | Plain, Zinc Plated, HDG, Black Oxide, Stainless |
| Typical Lead Time | Stock: 7â12 days. Production: 25â35 days. |
Frequently Asked Questions
What is the difference between DIN 934 and ISO 4032 hex nuts?
DIN 934 and ISO 4032 are both standards for hex nuts and are very similar. The main differences are in height and width-across-flats tolerances for certain sizes. ISO 4032 has generally replaced DIN 934 internationally, but DIN 934 remains commonly specified in European markets. For most applications the two are interchangeable; for critical assemblies, check the drawing.
How do nylon insert lock nuts (DIN 985) work?
A DIN 985 nylon insert lock nut has a ring of nylon at the top of the nut. When the nut is threaded onto a bolt, the bolt deforms the nylon, creating friction that resists loosening from vibration. These nuts are reusable a limited number of times and are rated for continuous operating temperatures up to approximately 120 °C (248 °F).
Can you supply heavy hex nuts for structural applications?
Yes. ASTM A194 Grade 2H heavy hex nuts, commonly paired with ASTM A193 B7 studs in flange and high-temperature applications, are available through factories in the cluster. We can also supply DIN 6330 high nuts and DIN 934 heavy hex variations.
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