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30Pcs 12.3mm x 16mm x 1.5mm Flat Copper Washer for Screw Bolt: Industrial & Scientific. 30Pcs 12.3mm x 16mm x 1.5mm Flat Copper Washer for Screw Bolt: Industrial & Scientific. Size: 12.3 mm x 16 mm x 1.5 mm / 0.63 "x 0.48" x 0.06 "(Internal diameter x OD x T) 。 Prevents a nut, bolt or screw through the material. 。 Material: copper: high hardness, wear resistance. 。 An ideal replacement for the washer damaged in your machine, furniture or other things. 。 : We are so sure that our product is the best in the market that we offer LIFE WITHOUT PROBLEMS. 。 Size Name:30Pcs 12.3mm x 16mm x 1.5mm Description: 1.Made of metal material, an ideal replacement for damaged washer in your machine, furniture or other things.2.Washers are normally used to distribute loads of threaded bolts, screws and nuts evenly as the fastener is tightened.3.Intended for the general use under the head of a bolt or nut in order to provide a smooth-bearing surface. Specification:Product Name: Copper Flat WasherSize: 12.3mm x 16mm x 1.5mm / 0.63" x 0.48" x 0.06"(Inner Dia x OD x T)Material: CopperColor: Copper Tone Package Content:30Pcs x Copper Flat Washer 。 。 。