Hexagon insert bits - for screws with internal serrations 六角嵌入式刀頭.帶內(nèi)細齒的螺釘
L - wrench for screws with internal serration 帶內(nèi)細齒的螺釘用的l形扳手
Bits with square drive for screws with internal serration , hand - operated 手動式帶內(nèi)細齒用方形驅(qū)動刀頭
Screw driver for screws with internal serration - screw driver points , gauges and test specimens for torque testing 帶內(nèi)細齒螺釘?shù)穆萁z刀.扭矩試驗用螺絲刀量規(guī)和試樣
Aerospace ; cheese head bolts with internal serration thread , short thread , steel , nominal tensile strength 900 mpa , for temperatures up to 235 c 航空和航天.帶內(nèi)細齒和mj螺紋短螺紋鋼制標(biāo)稱抗