A screw with threads on the outer surface of a cylinder or cone. A male thread that is used in combination with a female thread (nut) is generally called a bolt. Cutting tools such as turning tools, thread milling cutters, dies, and chasers are used to machine male threads, and for mass production, rolling methods (→ thread rolling machine) are used. For female threads, turning tools, thread milling cutters, and taps are used, but rolling methods like those for male threads cannot be used. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
ねじ山が円筒あるいは円錐外面にあるねじ。おねじのうち,めねじ (ナット) と組んで用いるものは,一般にボルトという。おねじの加工にはバイト,ねじフライス,ダイス,チェーザなどの切削工具が使われ,多量生産では転造加工法 (→ねじ転造盤 ) がとられる。めねじの加工には,バイト,ねじフライスのほかタップなどが用いられるが,おねじのような転造加工法はとれない。
出典 ブリタニカ国際大百科事典 小項目事典ブリタニカ国際大百科事典 小項目事典について 情報 |
...Some species, such as the upside-down frog Pse...
An alloy mainly made of aluminum with other eleme...
A Chinese gate with two pillars connected at the t...
…[Masaaki Kunishige]. … *Some of the terminology ...
A Shinshu Otani sect temple located in Nodera-cho,...
...Primary liver cancer is broadly classified int...
...It is a white version of black rhythm and blue...
〘Noun〙 Chicken meat or tripe is skewered, baked un...
… [Eiji Miki]. … From [Insect-trimmed Dianthus] …...
...This fraternalism seems to have been greatly i...
The director is the one who creates and unifies a...
A Roman politician and general in the final days ...
He was a commander of the anti-Japanese volunteer...
…The firefighting efforts on the ship were ultima...
...And this is also the basis for ontological dua...