WORM DRIVE HOSE CLAMP TO MATERIAL STAIN [ WORM DRIVE HOSE CLAMP TO MATERIAL STAINLESS STEEL, GRADE SS304 TO SIZE 50mm TO SUIT 31. 5 mm HOSE TO IS: 4762/ 02 ( REAFFIRMED 2011 ). as per Drg. No.- specn: GRADE SS304 TO SIZE 50MM TO SUIT 31. 5MM HOSE TO IS: 4762/ 02 ( REAFFIRMED 2011 ). ]