M50.843.787.78M6154.7109.78M715.55.21110.73M81/1.256.56.141312.73M101/1.25/1.587.641716.73M121.25/1.5/1.75109.641918.67M141.5/21110.32221.67M161.5/21312.32423.67M181.5/2/2.51514.32726.16M201.5/2/2.51614.93029.16M221.5/2/2.51816.93231M242/31917.73635M272/32220.74140M302/3.52420.74645永年县龙腾标准件有限公司始创于1997年，位于河北邯郸紧固件基地，公司经过多年的发展已经发展到产品规格上万种。涉及到螺母，螺栓，内六角。外六角、马车螺丝、蝶形螺丝、法兰螺丝、方头螺丝、地脚螺丝、双头螺丝、活节螺丝、T型螺丝