GB6187 Nylon/Metal Lock Flange Nut Without Anti-Loose Tooth M5-M20 GB6183

• Customization: Available
• Material: High Strength Steel
• Type: Hexagon Head
• Model NO.: M5-M20
• Connection: Common Bolt
• Head Style: Hexagonal
• Standard: DIN, ANSI, GB, BSW
• Grade: 4.8
• Material Type: Carbon Steel/Stainless Steel
• Surface Treatment: Plain/Natural/Galvanized/Black Oxide
• Color: Black/Silver/Blue/White
• Measurement: Metric/Inch
• Nut Standard: GB6183/GB6187
• Pitch: Coarse/Fine
• Thread Rotation Direction: Right/Left
• Package: Bulk/Bag/Box/Pallet
• Usage: Industry/Furniture
• Flange Plate: with/Without Anti-Loose Tooth
• Transport Package: Bulk/Bag/Box/Pallet
• Specification: M5-M20/Other
• Origin: China
• HS Code: 7318160000
• Production Capacity: 3000000
• Package Size: 20.00cm * 20.00cm * 20.00cm
• Package Gross Weight: 3.000kg

Product Description

Product Description

Nylon/Mental Lock Flange Nut

Flange locking nuts (also known as hexagon nuts with flange or flange nuts) are specialized fasteners featuring a wide flange at one end to enhance stability and distribute load over a larger surface area, preventing loosening under vibration.  
Their anti-slip teeth or locking teeth increase contact area with the workpiece, creating a locking effect to resist rotation.  
Commonly used in pipeline connections and industrial applications requiring high stability, such as automotive, construction, and machinery.  
Typically made of carbon steel, stainless steel, or aluminum, they are available in various sizes (M3–M30) and surface treatments like electroplating (e.g., zinc, nickel).  
The integrated washer design eliminates the need for separate washers, reducing parts count and installation complexity.  
Their cubic-thread geometry or anti-rotation mechanisms (e.g., slits or slotted threads) generate prevailing torque to counteract loosening forces.  
Available in configurations like self-locking, rotating flanges, or dual-flange designs, they adapt to different materials and environments.  
Standardized under GB6177-2000, they are often paired with bolts for secure, repeatable fastening.  
Widely used in automotive and industrial equipment for critical connections where vibration resistance is essential.  

Specification

Product Name	Flange Lock Nut
Material	Carbon Steel /Stainless Steel
Grade	4.8/8.8/A2-70/A4-80
Nut Shape	Nylon Lock/Mental Lock
Flange Plate Type	With/without anti-slip Teeth
Standard	GB6183/GB6187
Surface Treatment	Plain/Natural/Glavanized/Black Oxide
Color	White/Blue/Black/SIlver/Yellow
Measurement	Metric/Inch
Size	M5-M20/ 1/4"-3/8" /Other Customized
Thread Rotation Direction	Right/Left
Pitch	Coarse/Fine
Service	Support OEM/OBM/ODM Customized Service

Packing & Delivery

Bulk/Fiber Bag/Neutral packing

Carton/Box

Wood Pallet/Box

Bagged packaging is ideal for smaller quantities of fasteners. The fasteners are placed in durable plastic bags, which are then sealed to protect the contents from moisture and dust. Each bag is clearly labeled with product details and quantities. This packaging is easy to handle and transport for smaller orders, making it convenient for workshops and retail settings.

Boxed packaging offers a more structured solution for medium to large quantities of fasteners. The fasteners are packed in sturdy cardboard boxes, which provide additional protection against physical damage during transit. The boxes are designed to stack neatly, optimizing storage space. Each box is labeled with essential information, ensuring easy identification and inventory 

Palletized packaging is used for bulk shipments of fasteners. Multiple boxes or bags are securely strapped onto a pallet, creating a stable and easily transportable unit. This method is highly efficient for large-scale distribution and warehousing. Palletized packaging ensures that large quantities of fasteners can be moved quickly and safely using forklifts, reducing handling time and labor costs.

Company Profile

Certifications

FAQ

Q: What is the estimated lead time for orders?
A: Our estimated lead time is 15-30 days for 1-2 containers and extends to 30-45 days for 3-20 containers, ensuring timely delivery.
Q: Are you a professional manufacturer?
A: Absolutely! We have proudly been at the forefront of manufacturing since 1995.
Q: Is it possible to request a customized size?
A: Indeed! We offer customization services to tailor products precisely to your design specifications.
Q: What export documentation do you provide?
A: Our comprehensive export package includes a Commercial Invoice, Packing List, Bill of Lading, and COC, among other essential documents.
Q: How can I place an order?
A: Simply contact us via email or phone to receive a quote and finalize your order with a Purchase Order (PO).