Shenzhen Shenghu Fastener Mechanical & Electronical Co., Ltd.   Contact Name:Wang Zhensheng Phone:0755-84856021 84856051 84856061 Fax:0755-84856319 Address:No. 291, Longping East Rd, Longgang District, Shenzhen City Zipcode:518116 Email: Website: http://www.szshenghu.com DIN| DIN product:Hexagon head bolts and screwsScrew and washer assemblies DIN 931-2 M42 to M160*6 hexagon head bolts - Product grade B DIN EN ISO 4014 | Replace DIN 931-1 Hexagon head bolts - Product grades A and B(ISO 4014:1999) DIN EN ISO 4017 | Replace DIN 933 Hexagon head screws - Product grade A and B (ISO 4017:1999)