stub V-threadV型螺纹
v-thread V形螺纹
Abalakov V-thread阿巴拉克夫V字线
V- thread v形螺纹
v-thread形螺纹;三角螺纹
full V-thread全V形螺纹
shape-V threadV形螺纹
V thread screw三角形螺纹
V-type thread形螺纹;V形螺纹