... )carbon steel, stainless steel,aluminium 3)ROHS Compliant; TS-16949(including ISO 9001 round nut stainless steel wheel nut :Material: carbon steel(C1006A,1008A,1010A),stainless steel (304,316) aluminium ... 5/32, 3/16, 1/4,5/16, 3/8MaterialCarbon steel, stainless steel and aluminiumHeadFlat head,small head,countersunk head, flat hexagon headBodyRound,knurled ...