4mm Inner Diameter 8mm Outer Dia 0.25mm Thick Carbon Steel Wave Washer 100pcs

1.Wave washers resist loosening through vibration rely on elastic force. 2.Carbon steel providing good strength hardness and abrasion performance. 3.Suitable for M4 thread screws. 4.Washers are normally used to distribute loads of threaded bolts screws and nuts evenly as the fastener is tightened. 5.Intended for the general use under the head of a bolt or nut. Specification: Product Name: Wave Washer Package Content: 100(+/-2%)pcs x Wave Washer Main Color: Black Material: Carbon Steel Weight: 7g Hole Dia.: 4mm/0.16-inch Outer Dia.: 8mm/0.32-inch Total Height: 1mm/0.04-inch Thickness: 0.25mm/0.01-inch Wave Number: 3