hexagon thin nut din439
material: stainless steel 304316, grade 8.8 high strength and grade 12.9 high strength
product standard:din439
it can also support non-standard customization.
contact: lizhong.deng
phone: 13928071304
tel: 0756-8586520
email: lizhong@zhjiali.com
add: mingzhubeilu388haochangshaxinyun56-301,xiangzhou area,zhuhai city,guangdong province,china.