coarse thread

基本解释

Drywall screws, Phillips bugle head, Coarse Thread, Sharp point, black phosphated.
干墙螺丝，十字喇叭头，粗纹，尖头，磷化黑色。
cwkl-ua.cn.com51.com
The bone anchors can be fully threaded and can have fine thread and coarse threads for engaging cortical and cancellous bone tissue, respectively.
骨锚可完全插入，具有分别用于啮合皮层骨和松质骨组织的细螺纹和粗螺纹。
ip.com
Through analyzing of a bottle cover structure with inner thread, a type of screw and nut with coarse pitch was applied to realize thread core demoulding automatically.
通过对一种带有内螺纹的酒瓶盖的结构分析，阐述了采用大导程螺杆和螺母机构实现螺纹型芯自动旋转脱模的设计过程及其工作过程。