pin-to-pin reducer
两头阳螺纹的大小头
double pin sucker rod
两头阳螺纹的抽油杆
female-male reducer
两端分别带有内外螺纹的大小头
pepe bend with male and female thread
一头带阳螺纹一头带阴螺纹的弯头
pipe bend with female thread
两头带阴螺纹的弯头
male and female cross
阳螺纹-阴螺纹十字接头
A pipe coupling threaded on both ends.
螺纹接头一种两端都带外螺纹的管子
lead nipple for tubes or pipes
铅螺纹接头,用于大小管的
Hexagonal head shoulder screw with adjustable shoulder and thread sizes.
肩和螺纹大小可调整的六角头带肩螺钉。
box up and pin down
上部阴螺纹-下部阳螺纹接头
NC machining nut with large lead and 3-start rectangular thread
大导程三头矩形螺纹螺母的数控加工
Screwed 1;Screwed 2;Screwed 3;Screwed 4
螺纹接头 1;螺纹接头 2;螺纹接头 3;螺纹接头 4
Screwed Joint 1;Screwed Joint 2;Screwed Joint 3
螺纹接头 1;螺纹接头 2;螺纹接头 3
A small block of metal or wood with a central, threaded hole that is designed to fit around and secure a bolt or screw.
螺母，螺帽中部有螺纹用于与螺栓或螺钉相配合的小块金属或木头
tapped and plugged
车出螺纹用堵头堵上的
double-screw bolt
螺柱，双头螺纹螺栓
the part of a bolt between the thread and the head.
螺钉的头部和螺纹之间的部分。
Side view of fillister head slotted screw with adjustable thread length.
螺纹长度可调整的槽头螺钉的侧面图。