NF E25-511 Zinc Single-Tooth Knurling Disc Spring DIN9025 M5-M24 SUS304/A2 Bowl-Shape Washer

• Customization: Available
• Type: Lock Washer
• Material: Carbon Steel/ Stainless Steel/Alloy Steel
• Model NO.: M5-M24
• Steel Name: 65mn/SUS304-A2/SUS316-A4/
• Surface Treatment: Zinc Galvanized/Phosphating/Natural/Dacromet
• Color: Yellow/White/Silver/Blue
• Measurement: Metric/Inch
• Grade: 8.8/10.9/12.9/A2-70/A4-80
• Transport Package: Bluk/Bag/Box/Pallet
• Specification: 5mm-24mm/Other Customized
• Trademark: LingKe
• Origin: China
• Production Capacity: 3000000/Week
• Package Size: 20.00cm * 20.00cm * 20.00cm
• Package Gross Weight: 3.000kg

Product Description

Product Description

Single-Sided Serrated Washers

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These precision washers feature unilateral serrations that bite into mating surfaces to prevent loosening under vibration. Manufactured from hardened 65Mn carbon steel (HRC 44-51) or corrosion-resistant SUS304/316L stainless steel, they comply with French NF E25-511 standards. ‌Key Specifications:‌ ‌Sizes‌: M3-M24 (metric), with 6-8 radial serrations per washer ‌Finishes‌: Zinc plating (96h salt spray), Dacromet coating (800h+), or passivation ‌Performance‌: Compatible with Grade 8.8-12.9 bolts, operating range -60°C to +300°C  The single-sided design allows controlled surface penetration while protecting softer substrates. Widely used in automotive subassemblies and industrial machinery where conventional washers fail.

Specification

Product Name	Single-Sided Serrated Washers
Material	Carbon Steel /Stainless steel 304 316
Grade	8.8/10.9/12.9/A2-70/A4-80
Type	Bowl-Shape/Flat-Shape
Surface Treatment	Zinc Galvanized/Phosphating/Natural/Dacromet
Color	White/Silver/Yellow/White/Blue
Measurement	Metric/Inch
Size	5mm-24mm/Other Customized
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).