Description: External Lock Washer Sems
Application :External Tooth SEMS screws provide greater torsional resistance than internal tooth lock washers.
Type: sems screw
Materials: Steel , stainless steel A2/A4,304
Surface treatment: zinc plated, black oxide, hot dip galvanized, passivated
Head Type: Socket Countersunk head, pan head, hex washer head
Standard: ASME B18.13 / ASME B18.13.1M
Certificate：Material Chemical Certificate, Inspection Report
About us
Shanghai ScrewTool Industrial is a subsidiary of Jiaxing Victor Screw Company, we serve the market of end-user customers , supplying economic fastener solutions to industry customers.
Address:
Office: #1409, No.26, Lane 777, Guangfulin Road, Songjiang District, Shanghai, China 201600
Factory: No.1, Guan-He Road, Haitou Town, Lianyungang, China