The ANSI B18.21.1 standard covers dimensional requirements, physical properties, and related test methods for Heavy Helical Spring-Lock Washers. These washers are designed to provide additional clamping force to prevent bolts or screws from loosening under vibration or shock.
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:
Prevents loosening: ANSI B18.21.1 standard spring washers provide elastic clamping force through their helical shape, effectively preventing nuts or bolts from loosening. MULTIPLE SIZES: These washers are available in a variety of sizes from #0 to 3 inches to accommodate different bolts and screws.
Scope of Application
Machinery and equipment manufacturing: In machinery and equipment manufacturing, for fixing and adjusting machine parts such as bearings, gears and motors. Building and civil engineering: in building and civil engineering, for joining beams, columns and other structural components to provide stable and reliable connections. Automotive industry: In automotive manufacturing, for connecting 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.
