supply of set of high tensile socket head capset of high tensile socket head cap,set of high tensile socket head cap screw for air spring assembly consistin g of 03 items :- (1) high tensile hexagonal socket head cap screw, m20x55 long, is: 2269 (latest) cla ss 10.9 or higher, qty = 01no (2) hardened and tempered washer with 300 hv class (300 hv - 370 h v) hardness. a 22, ls:2016 1967 reaffirmed 2021 (latest), qty = 02 nos (03)prevailing torque type h exagonal nuts (with non metallic insert), m20:b, ls: 7002 2005(latest) class 10, qty = 01 no. surface finish of fasteners:-all fasteners (screws, washers & nuts) shall be zinc electroplated to a3l finish of l s:1367 (part - 11) with latest revision and amendment. [ warranty period: 30 months after the date of delivery ] ]