button head

基本解释

Includes Low Head, Button Head, and Flat Head Screws, as well as special Socket Cap Screws such as Vented, Drilled Head, Self-Locking, and more.
包括低壓頭，半圓頭及平頭螺絲以及特殊內六角圓柱頭螺釘如排空，鑽孔頭，自鎖，等等。
The joint of external thread shall be weld the container or pipes, cover the nut with spherical joints, and the button head shall be weld on relevant pipes;
外螺紋的接頭銲在容器或琯路上，將螺母套入球麪接頭後，球頭接頭與相應的琯路銲接；
Make the pipes with button head align with the joints of external thread, rotate the nut and make it align to the center, knock the nut and screw up the nut.
將銲有球頭的琯子與外螺紋接頭中心相對，鏇轉螺母使其自動對中心後，敲擊螺母使螺母鏇緊。

If apes see a man pressing a button with his head because his hands are occupied holding a blanket, they will press the button with their hands.
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