Ningbo Yinzhou Zhenhua Stamping Co., Ltd.

Ningbo Yinzhou Zhenhua Stamping Co., Ltd.

The DIN 6798J internal serrated locking washer generated by Zhenhua makes every fastening rock-solid.

2026 04/24

1.Why do your industrial equipment always malfunction at critical moments?
In the industrial production process, have you ever encountered these headache-inducing scenarios:
The motor bolts on the automated production line frequently loosen, causing equipment downtime and production capacity interruption;
The fasteners on the car chassis loosen due to road impact, posing safety hazards;
The outdoor electrical equipment experiences poor contact at the wiring terminals due to vibration, leading to short circuits and abnormal noises;
The bolts of the door mechanism in rail transit loosen, significantly increasing maintenance costs and safety risks.
Traditional flat washers and ordinary spring washers are no longer capable of coping with the complex working conditions of high vibration and strong impact. The DIN 6798J internal serrated lock washers produced by Zhenhua are precisely the high-performance German standard fasteners designed to address these industry pain points.
DIN6798J(zhenhua)-2
 
2.Then what is DIN 6798J internal serrated locking washer?
DIN 6798J is an internal serrated locking washer defined by German industrial standard, which is specially designed for bolt/nut connection. The serrated teeth evenly distributed in the inner ring bite the end face of the bolt and the surface of the connected piece to achieve double locking effect, and it is recognized as an efficient anti-loosening solution in the industrial field. Our DIN 6798J washer strictly follows the German standard, covers the whole series of specifications of M2-M30, and is made of 304/316 stainless steel, 65Mn spring steel and other materials, which is suitable for all kinds of fastening scenes from light industry to heavy industry.
 
3.The four core advantages of DIN 6798J produced by Zhenhua redefine the industry standard.
  • Tooth bite, the multidirectional serrations of the powerful anti-loosening inner ring are embedded into the end face of the bolt and the surface of the workpiece during the tightening process, forming a double locking mechanism of "mechanical bite+friction resistance", which can effectively resist the connection looseness caused by vibration, impact and temperature alternation, and the anti-loosening effect is far superior to that of ordinary spring washers.
DIN6798J(zhenhua)-4
  • Multi-material adaptation, full scene coverage 304/316 stainless steel: rust-proof and corrosion-resistant, suitable for harsh environments such as humidity, acid and alkali (such as outdoor equipment and marine engineering); 65Mn spring steel: high elasticity, anti-fatigue, and can withstand repeated impact loads (such as automobiles and rail transit);
  • Zhenhua supports customized surface treatment (such as zinc plating, dacromet, etc.) to meet the application needs of customers in special anti-corrosion and conductivity. Compatible with general use, the installation of zero threshold is completely suitable for multi-system standard bolts/nuts such as German standard and national standard, and there is no need to modify the design or replace fasteners; It is installed synchronously with bolts, without special tools and occupying additional assembly space, which is perfectly suitable for automatic assembly line.
  • German standard process, stable quality, high standard stamping process, and strict control of dimensional tolerance within the German standard range; Each batch has been tested for hardness, elasticity and anti-looseness, so as to ensure stable performance under long-term working conditions and prevent early failure.
4.Applicable industries and scenarios Industrial automation: motor, transmission mechanism, robot joint, automatic production line equipment;
DIN6798J(zhenhua)-2
Automobile and transportation: chassis, engine, doors, seats, rail transit vehicle fasteners; Electricity and energy: photovoltaic inverter, distribution cabinet, terminal, outdoor electrical equipment; General machinery: pump valves, fans, compressors, construction machinery, agricultural machinery; Ocean and outdoor: marine equipment, port machinery, outdoor billboards, photovoltaic supports.
 
5.Why choose Zhenhua's DIN 6798J washer? Full-specification spot: M2-M30 full-range specification standing stock, supporting mass customization and fast delivery; Quality assurance: passed ISO 9001 quality system certification, and provided material report and performance test report for each batch; Technical support: provide free suggestions on the selection of locking schemes, and recommend suitable materials and specifications according to customers' working conditions; One-stop service: support the matching supply with bolts and nuts, and reduce the procurement cost and management cost of customers.
DIN6798J(zhenhua)-1