Washer faced hex head screws

This washer faced hex head screw uses DIN933 standard screws with our anti loss washer fitted to provide the washer element. Customers will recive this product pre-assembled.本清洗器所采用的六角头螺丝符合DIN933标准，并配备我司特制的防脱落垫圈，以确保垫圈元件的完整性。客户将收到预先组装好的该产品。