M4 Stainless Steel Spring Washers, Split Ring, Helix Lock Washer, Single Coil Square Section Shim, Gasket Ring for 4mm Bolt/Screw DIN 127 A2 (Pack of 50)

• SPRING WASHER: DIN 127 A2 stainless steel Split washer at one point and bent into a helical shape. This causes the washer to exert a spring force between the fastener's head and the substrate, which maintains the washer hard against the substrate and the bolt thread hard against the nut or substrate thread, creating more friction and resistance to rotation.
• USABILITY: Various metric size split lock washers have a left-hand helix, which means you can only use them with bolts that have right-hand threads to prevent clockwise rotation from vibration. When tightened, their uneven split ends bite into unhardened nuts and bolts for a tighter hold than curved or wave washers, but only for applications with clockwise rotation.
• A2 STAINLES STEEL: A2 is also known as AISI 304 Stainless steel-The most commonly used stainless steel. Grade A2 steels are the more commonly used stainless steels. They are used for kitchen equipment and for apparatus for the chemical industry. Steels of this grade are not suitable for use in non-oxidising acids and media containing chloride, e.g. in swimming pools and in sea water.
• SHIMS SUITABLE FOR: General purpose engineering, automotive panel fixing, building, sheet metal, plastic fabrication, DYI.
• SPECIFICATIONS: DIN127 M4, Material- A2 Stainless Steel, Hole diameter- 4.1mm, Outside diameter- 7.6mm, Thickness- 0.9mm, Pack of 50.

Stainless Steel Spring Lock Washer The Function of Spring Lock Washer The lock washer prevents nuts and bolts from turning, slipping and coming loose because of vibration and torque. Different lock washers perform this function in slightly different ways, but the basic concept is to hold the nut and bolt in place. Some lock washers achieve this function by biting into the base material (bolt) and the nut with their ends. Applications of Spring Lock Washer Lock washers are commonly used in applications involving vibration and possible slippage of fasteners. Industries that commonly use lock washers are transportation related (automotive, aircraft, marine). Lock washers may also be used in household appliances such as air handlers and clothes washers (washing machines). As you tighten a bolt, these metric washers flatten to add tension to the threaded joint and prevent loosening from small amounts of vibration. Splitlockwashers have a left-hand helix, which means you can only use them with bolts that have right-hand threads to prevent clockwise rotation from vibration. When tightened, their uneven split ends bite into unhardened nuts and bolts for a tighter hold than curved or wave washers, but only for applications with clockwise rotation. Stainless Steel A2 is a commonly used grade, as it’s very versatile and offers strong abrasion resistance, plus good resistance to corrosion and high-hardness levels. Steel is from the austenitic family, containing 18% chromium and 8% nickel. Specifications: Material- A2 Stainless Steel Hole diameter- 4.1mm Outside diameter- 7.6mm Thickness- 0.9mm