★美标 UU型开式螺旋扣 产品代号 型号( in. ) 使用负荷 (t) 重量 (kg/ 件) 尺寸参数 (mm) A B G L1 L2 d BB GH3101 1/4 ×4 GH3102 5/16×4-1/2 GH3103 3/8 ×6 GH3104 1/2 ×6 GH3105 1/2 ×9 GH3106 1/2 ×12 GH3107 5/8 ×6 GH3108 5/8 ×9 GH3109 5/8 ×12 GH3110 3/4 ×6 GH3111 3/4 ×9 GH3112 3/4 ×12 GH3113 3/4 ×18 GH3114 7/8 ×12 GH3115 7/8 ×18 GH3116 1×6 GH3117 1×12 GH3118 1×18 GH3119 1×24 GH3120 1-1/4 ×12 GH3121 1-1/4 ×18