Grade 2 USS Zinc Plated Assortment Flat Washer and Split Lock Washer in Plastic Carrying Case (280-Pieces)

USS flat washers are designed for assembly around a bolt or screw, between the bearing surface of the fastener and the part to which it is attached. Flat washers are used to improve stress distribution, and to span large clearance holes. Split lock washers are coiled, hardened, split circular washers with a slightly trapezoidal wire section. The tension generated by the deflection of the regular helical spring lock washer meets the needs of most commercial applications.|Assortment contains the following sizes and quantities of USS flat washers zinc plated: 1/4 50 pcs 5/16 35 pcs 3/8 25 pcs 7/16 15 pcs 1/2 10 pcs 5/8 5 pcs|Assortment contains the following sizes and quantities of split lock washers zinc plated: 1/4 50-pieces 5/16 35-pieces 3/8 25-pieces 7/16 15-pieces 1/2 10-pieces 5/8 5 pcs|Material: steel zinc plated|Clear plastic carrying case for easy storage