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DIN 6796 Belleville Washers

DIN 6796 belleville washers are used to provide controlled axial loading in bolted joints and to compensate for thermal expansion, relaxation, or elastic deformation in various mechanical assemblies.

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DIN 6796 Belleville Washers

DIN6796 belleville washers, also called disc pads or heavy-duty bolting washers, are frequently identified as conical spring washers because of their distinctive shape. Designed for bolts and screws in the medium to high strength range (8.8 to 10.9), these washers compensate for loss of tensile force and help mitigate loosening, wear, creep, thermal expansion, contraction, and compression of sealing elements in vulnerable components.
With a large bearing capacity and good elastic recovery, the DIN6796 belleville washers is able to maintain the stability of the bolt tension when it is subjected to relaxation caused by factors such as wear of vulnerable parts, creep, relaxation, thermal expansion, contraction or compression of the sealing element.

Specification for DIN 6796 Belleville Washers

Our DIN 6796 belleville washers are produced according to the standard DIN6796, the standard specifies that the product’s outer diameter range is 6–250 mm, inner diameter 3.2–127 mm, and thickness 0.3–16 mm, suitable for M4 to M30 bolt connections.
Learn more about Belleville spring washers’ Specifications

Material for DIN 6796 Belleville Washers

Spring steel 60Si2Mn、65Mn、50CrVA, Stainless steel 304, stainless steel 316, Inconel X-750
We also manufacture from special materials.

Corrosion Protective for DIN 6796 Belleville Washers

Electrophoresis: Electrophoresis processing involves surface treatment of disc-shaped spring washers to remove obstacles between the coating film and the coated part surface, eliminating factors that affect their adhesion, such as oil stains, rust stains, oxide scale, and other impurities, thereby providing optimal conditions for electrophoresis coating.

Phosphating: Typically used for the surface treatment of carbon steel disc-shaped spring washers, this method achieves excellent surface finish by reacting with phosphoric acid or phosphates to form a stable phosphoric acid salt layer on the disc spring surface.

Electroplating: A surface treatment technology that uses electrolysis to deposit metal or alloy onto the surface of disc-shaped spring washers, forming a metal coating. Common electroplating processes for disc-shaped spring washers include zinc plating and nickel plating.

Dacromet: Also known as zinc-chromium coating, it is the transliteration and abbreviation of DACROMET. Compared to traditional electroplating, it is an “eco-friendly electroplating” method, featuring exceptional corrosion resistance, no hydrogen embrittlement, high heat resistance, and no pollution.

Application for DIN 6796 Belleville Washers

DIN6796 Conical Spring Washers are widely used in:

Aviation industry: used in high-strength fastening systems
Automobile manufacturing: used in engine and transmission component connections
Medical equipment: used in precision instrument shock absorption devices
Chemical machinery: used in anti-loosening fastenings in corrosive environments

Installation and Use

Installation Method: The ideal installation method is to flatten the washer as much as possible. The closer it is to a flattened state, the faster the tension torque increases, thereby achieving the appropriate bolt tension. Installation can be completed without a torque wrench.

DIN 6796 Belleville Washers

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