supply of 4 pin pre-cooling plug and socket, 63 440 v ac , 4 pin pre-cooling plug and socket, 63 amp 440 v ac, confirming to icf drawing. no. icf / s k-7- 1-102 alt. r item col - vii for plug and item in col.-iv for socket. pre cooling plug col vii consists of : (i) item no. 3 plug housing 01 no. (ii) item no. 6 cover 01 no. (iii) item no. 7 coil spring 01 no. (iv) item no . 8 gasket 01 no. (v) item no. 9 pin 01 no. (vi) item no. 10 tube 01 no. (vii) item no. 13 bracket 01 no. (viii ) item no. 14 plug terminal block 01 no. pre cooling socket col- iv consists of (i) item no. 4 socket termi nal block 01 no. (ii) item no. 5 socket housing 01 no [ warranty period: 30 months after the date of deli very ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]