supply of bolt boxbolt box,bolt box (isolation switch) of plug door, kb part no- 3t201883r21, for vande bharat rake, ma ke-knorr bremse [ warranty period: 30 months after the date of delivery ] ] , spares of plug door for vande bharat coach, make- knorr bremse 1. tooth washer, kb part no - 3t408221r15-01 nos 2. toothed washer hdt (spindle end), kb part no- 3t408221r12-01 nos [ warr anty period: 30 months after the date of delivery ] ] , spares of plug door for vande bharat coach, make- knorr bremse 1. rubber buffer, kb part no- 3dn400826r24- 01 nos 2. gauge, kb part no- 7wn300266r37_c04- 01 nos 3. pressure switch, kb part no- 7wn300030r67_c04 - 01 nos [ warranty period: 30 months after the date of delivery ] ]