NUT LOCKING STAINLESS STEEL M4 PK100; Thread Size - Imperial:-; Thread Size - Metric:M4; Fastener Material:Stainless Steel; Nut Type:Nylon (Polyamide) Locking; Fastener Plating:-; Product Range:-; SVHC:No SVHC (12-Jan-2017); Material:Stainless Steel