supply of coupler aluminium alloy dia 25mmcoupler aluminium alloy dia 25mm,25mm dia aluminium alloy coupler to is:1285-(latest) with designation 63400 condition t6 (new) of table 2, with threads as per table-1 of is-14763 (latest),with is-14 768 part-1 clause 6.3.3 (medium mechnical stresses),clause 6 table 1 s.no.(vi) for tempe rature classification, clause 6.8.1.4 (protection against dust)and clause 6.9.3 (with d eclared tensile strength for 10kg load) and dimensions to is:14768 part-2 (latest). no te: the length of the coupler shall be as per is 14768 part-2 latest fig.102 marked x t hat is 25 mm long. [ warranty period: 30 months after the date of delivery ] => limited