304不锈钢圆头螺丝,本色螺丝,GB818,PM钝化螺丝,圆头螺丝,圆机螺丝,GB823材质:304不锈钢常用规格:4x5,4x6,4x8,4x10,4x12,4x14,4x16,4x18,4x20,4x25,4x30,4x35,4x40,4x50,4x60颜色:本色国标编码:GB818GB823 头的直径:7.00-7.30标准头 LED螺丝,黑锌螺丝,高盐雾黑锌螺丝,耐腐蚀黑色达克罗,环保螺丝!盐雾时间可以过24小时,48小时,120小时,240小时!500小时!高防腐蚀:室内环境5年不发白,户外3年不发白,海边酸碱环境1.5-2年以下为其他规格螺丝,均有大量库存!常用规格表:圆头自攻螺丝(GB845PA):1.7x41.7x51.7x61.7x81.7x101.7x122x42x52x62x82x102x122.3x52.3x62.3x82.3x102.3x122.6x62.6x82.6x102.6x123x53x63x83x103x123x164x84x104x124x16沉头自攻螺丝(GB846KA):1.2x41.2x51.2x61.2x81.4x61.4x81.7x41.7x51.7x61.7x81.7x101.7x122x42x52x62x82x102x122.3x52.3x62.3x82.3x102.3x122.6x62.6x82.6x102.6x123x53x63x83x103x123x16圆头机丝(GB818PM):1.7x51.7x61.7x82x42x52x62x82x102x122x162x182x202x232.5x42.5x52.5x62.5x82.5x102.5x123x53x63x83x103x123x163x20沉头机丝(GB819KM):1.7x41.7x51.7x61.7x72x42x52x62x82x102x122x142x162x202.5x42.5x52.5x62.5x82.5x103x43x53x63x83x103x123x153x163x203x254x54x64x84x104x124x144x164x184x204x25组合螺丝(GB9074.8):3x63x83x103x123x164x64x84x104x124x164x204x254x304x35平垫(GB97DIN125):M3M4M5M6M8M10M12弹垫(GB93DIN127):M3M4M5M6M8M10M12螺母(GB52DIN934):M3M4M5M6M8M10M12可以按客户要求定做非标不锈钢螺丝,其他不锈钢螺丝均可定做为黑色广东省深圳市不锈钢圆头螺丝,圆机螺丝304不锈钢圆头螺丝GB818PM4x5,4x6,4x8,4x10钝化螺丝本色圆机螺丝五金