Top view of fillister head screw.
槽头螺钉的俯视图。
Top view of fillister head screw. Selection box represents thread diameter.
槽头螺钉的俯视图。选择框代表螺纹直径。
Cold upset female die of fillister head is the key mold in the manufacturing process of heading bolt.
冷镦圆头凹模是冷镦螺栓生产过程中的关键模具。
The fillister in both sides of the needle-bar can protect and carry fabrics and reduce puncture force.
在针杆两旁的凹槽可以保护和带引纤维，及降低穿刺力。
The fillister in both sides of the needle-bar can protect and carry fabrics and reduce puncture force.
在针杆两旁的凹槽可以保护和带引纤维，及降低穿刺力。
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