supply of (1) hardened & tempered punch washer (2) stainless steel plain washer (3) punched washer a 26 (for bolt or screw size m 24) (4) punched washer plain steel a30 , hardened & tempered punch washer to size a22, with 300 hv class (300 hv to 370 hv ) hardness, as per drawing: is:2016-1967, zinc coating as per mdts-057 [ warranty period: 30 month s after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: ma x 8 lacs ] ] , stainless steel plain washer a18 to is:2016-1967 tab-2 aisi-304 . [ warranty period: 30 mon ths after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: ma x 8 lacs ] ] , punched washer a 26 (for bolt or screw size m 24)to i.s:2016 table-2 and material steel to i.s:2062/2011 e 250 grade [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: ma x 8 lacs ] ] , punched washer plain steel a30 is 2016/67 or latest . [ warranty period: 30 months a fter the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: ma x 8 lacs ] ]