The NFE 25-511 Standard Disc Convex Washer (Contact Lock Washer) is a washer with a tapered or beveled shape that is typically used in conjunction with bolts or screws to provide additional clamping force and prevent loosening. These washers typically have a raised textured surface to increase friction and prevent rotation.
Stainless Steel (304/316): Offers superior corrosion resistance and is suitable for moist or corrosive environments. The 316 grade has additional molybdenum, providing even better corrosion resistance, especially in marine applications.
Carbon Steel: Provides good strength and is the most common material for bolts. It may require additional surface treatments like galvanizing for increased corrosion resistance.
Alloy Steel: Offers enhanced strength and durability. It is often used in high-stress applications where high tensile strength is required.
Advantage:
Tapered Design: The tapered design of the NFE 25-511 washer helps to automatically adjust during fastening to accommodate different surfaces and provide even pressure distribution. Raised Texture: The raised texture on the surface of the washer increases friction with the connected part and helps prevent the washer from loosening in high vibration environments. Multiple Materials: These washers can be made from a variety of materials such as carbon steel, stainless steel (e.g. SUS 304, 316), etc. to accommodate different corrosion resistance and strength requirements. Surface treatment: The surface of the washers may be treated with zinc plating, Dacromet, blackening, etc. to improve corrosion and abrasion resistance.
Scope of Application
Machine building: In machine and equipment building, for fixing and adjusting machine parts such as bearings, gears and motors. Construction industry: In building and civil engineering, they are used to connect beams, columns and other structural components, providing a stable and reliable connection. Chemical industry: in the construction of chemical plants, these washers are used to connect and secure equipment such as pipes, pressure vessels and heat exchangers due to their good corrosion resistance. Automotive industry: In automotive manufacturing, they are used to connect automotive components such as chassis and body fixings.
Quality Certification
Hebei Bentley is ISO9001:2015 certified and equipped with relevant certificates for quality assurance. Due to its specific dimensions and performance levels, it is suitable for a wide range of industrial and commercial scenarios including, but not limited to: machine building, construction work, transport, energy industry, timber frame connections.
Quality inspection
Bentley has invested a huge amount of money to builda product testing laboratory, equipped with importedhigh-end instruments:such as thread comprehensivescanners, high temperature tensile testing machines,high frequency fatigue testing machines, etc., to ensurethat all products are strictly tested before leaving thewarehouse to ensure the reliability of customers duringuse.
