Kit for Bolster Suspension Arrangement f [Kit for Bolster Suspension Arrangement for 20 Ton Bogies With 180/150KN Air Spring. ICF Drg. No. DMU/DPC10-0-5-001 Alt-k/Nil. Item No.17, Spring Lock Washer B10 Qty.08 Nos. Item No.18, Hexagon Head Screw M16x75 Qty.16 Nos. Item No.19, Hexagon Head Screw M16x120 Qty.24 Nos. Item No.20, Prevailing Torque Type Nut M16 Qty.24 Nos. Item No.23, Hex Socket Head Cap Screw M20x50 Qty.16 Nos. Item No.24, Prevailing Torque Type Nut M20- Qty.16 Nos. Item No.25, Pu