DIN908 內(nèi)六角錐型閉鎖螺釘(內(nèi)六角油塞 管螺紋hexagon socket screw plugs,cyl. thread) d G1/8 G1/4 G3/8 G1/2 G3/4 G1 G1-1/4 G1-1/2 Threads per inch 28 19 19 14 14 11 11 11 d2 14 18 22 26 32 39 49 55 s 5 6 8 10 12 17 22 24 L≈ 11 15 15 18 20 21 21 21