supply of 1-half geared coupling no. of teeth -38 no 2-half geared coupling no. of teeth -40 no , half geared coupling no. of teeth -38 nos flange outer dia-185 mm, thickness of flange -16 mm, hub outer dai- 125 mm , hub length -42 mm, number of fixing holes -06 nos. (hol e diameter - 12 mm) pitch circle diameter of fixing holes -155 mm, pilot hole -30 mm ,material medium carbon steel as per is:1875/1992 class 5 and hardness of geared portion in the gear coupling shall be more than 250 bhn with material test certificate from nabl govt. approve rd test lab. [ warranty period: 30 months after the date of delivery ] ] , half geared coupling no. of teeth -40 nos, flange outer dia-185 mm, thickness o f flange -16 mm, hub outer dai- 125 mm , hub length -42 mm, number of fixing holes -06 nos. (h ole diameter - 12 mm), pitch circle diameter of fixing holes -155 mm, pilot hole -30 mm ,materi al medium carbon steel as per is:1875/1992 class- 5 and hardness of geared portion in the g ear coupling shall be more than 250 bhn with material test certificate from nabl govt. approverd agency. [ warranty period: 30 months after the date of delivery ] ]