Fastening hardware engineered to lock firmly while removing the need for a separate washer. For DIYers and workshop professionals who want neat, reliable assemblies, the bold MINHER Serrated Flange Hex Nuts combine a serrated flange with corrosion-resistant material. Will they stand up to repeated use in automotive and industrial settings?
⚡ At a Glance
- • Grip & Locking: Serrated flange bites into mating surface to resist rotation and loosening
- • Best for: Automotive assembly, machinery maintenance and home improvement projects
- • Not ideal for: Applications requiring captive or sealed fasteners where flange contact is unsuitable
Manufactured from A2-grade 304 stainless steel with a black electroplated finish and serrated flange geometry. Supplied as M4, inner diameter 4mm, spanner size 7mm, nut height 4.5mm, pitch 0.7mm, compliant with DIN 9623 and packed as 20 pieces.
Secure fastening under vibration – with serrated flange teeth
Serrated flange teeth dig into the mating material surface, creating friction that resists rotational forces. The wider flange also spreads clamping load across a larger contact area.
Greater resistance to loosening reduces the need for frequent retightening, especially where vibrations are present, such as engine bays or machinery.
Improved corrosion resistance – thanks to A2-grade 304 stainless steel and black electroplating
A2-grade 304 stainless steel provides inherent resistance to rust and oxidation, while the black electroplated finish adds a secondary protective layer and a uniform surface appearance.
Fastenings retain strength and a tidy finish in damp or workshop environments, prolonging service life and reducing replacement frequency.
Faster assembly with fewer parts – because the flange replaces a nut plus flat washer
Integrated flange removes the separate washer interface by combining load distribution and locking features into a single component. Standardised M4 dimensions ensure predictable fit with compatible bolts.
Simplified hardware counts speed up installation and reduce the chance of losing small washers during repairs or production work.
✨ The 4 Key Reasons for MINHER Serrated Flange Hex Nuts
- A2-grade 304 stainless steel – Increases corrosion resistance, keeping fastenings reliable over many years.
- Black electroplated finish – Delivers uniform appearance while adding a secondary protective surface.
- DIN 9623 compliance – Ensures consistent dimensions for reliable interchangeability with standard bolts.
- 20-piece pack – Supplies enough fasteners for small projects or multiple repair jobs.
📋 Technical Details at a Glance
- Category: Serrated flange hexagon nuts
- Material: A2-grade 304 stainless steel
- Finish: Black electroplated
- Standard: DIN 9623
- Inner diameter: 4 mm
❓ Frequently Asked Questions
Q: Are these nuts suitable for outdoor or damp environments?
A: Yes. A2-grade 304 stainless steel combined with a black electroplated finish improves corrosion resistance for damp or workshop conditions.
Q: Do the flanged nuts remove the need for a washer?
A: Yes. The serrated flange replaces a separate nut plus flat washer by spreading load and providing anti-slip contact.
Q: What size and specification do these nuts have?
A: These are M4 serrated flange hex nuts with a 4mm inner diameter, 7mm spanner size, 4.5mm height, and 0.7mm thread pitch, compliant with DIN 9623.
🏆 Our Verdict
Suitable for DIY enthusiasts, mechanics and production technicians who require dependable fastenings with fewer parts. The key selling point is the combination of serrated flange locking and A2-grade 304 stainless steel with a protective black finish. Durable construction and standardised dimensions deliver strong long-term value for repair and assembly work.
