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
"Bolts,screws & nuts"
"螺栓,螺丝及螺帽"
hex machine screw nut
机械螺丝用六角螺帽
LDP Pump Bracket Nuts/Bolts
LDP泵支架螺帽/螺栓
automotive fasteners
车辆(汽车)螺丝、螺帽
hot dip galvanizing bolts and nuts
热浸镀锌螺丝、螺帽
bolt nut and screws heat treatment furnaces
螺丝、螺帽热处理炉
fasteners inspection and measurement instruments
螺丝、螺帽品检量测仪器
SLN self-locking nuts
SLN自动防松螺帽
BRACKET MOUNTING NUTS
支架固定螺帽（2）
lock nut of iron or stee
锁紧螺帽,防松螺帽,铁或钢制
brass bolts and nuts with round head
黄铜圆头螺栓和螺母
threaded type track bolt nut chuck
螺纹式轨道螺母夹头
follower stud and unt
从动板柱螺栓及螺母
butterfly nut of iron or steel
蝶形螺帽,铁或钢制
all-metal prevailing torque type nuts
金属预置扭矩式螺帽
corten steel heavy hex nuts
耐候钢六角重型螺帽
stainless steel heavy hex nuts
不锈钢六角重型螺帽