standoffs 1Standard:PEM 2.material:carbon steel 3.size:m3-m8 4.application: sheet metal, chassis, cabinet fast Standoffsspecification:1.These fasteners are processed with cold heading way and better product density, mechanical properties, metal toughness.2.PEM standard or GB,DIN,ANSI,JIS,BSW and RoHS/ Weee/ELV/REACH Directive Compliance3.Hardness HV400 ~ 500 after heat treatment4.White/blue zinc ...