M/s Heavy Vehicles Factory

1. Whether Tank and all Tank parts supplied by the applicant is considered under HSN code “8710000-Tank and other armoured fighting vehicles, motorized, whether or not fitted with weapons and parts of such vehicles”?
2. Whether parts manufactured specifically by applicant for TANK shall be considered under 87100000?
3. Whether parts and accessories supplied by their vendor specifically manufactured for tank parts and the same is not supplied to any other company will come under the HSN 87100000?
4. Whether tank parts of the following shall be considered under 87100000 or not:-
O Ring, U Drill, Accumulator Assembly, Adaptor Assembly, Angle piece, Armature Assembly, Armour Steel Plate, Assembly Fixture, Assembly Bracket, Axial Bearing, Axle, Ball Bearing, Band Assembly, Base Assembly, Battery, Bearing Bush, Bellows, Bevel Gear, Booster Assembly, Boss Assembly, Bracket Assembly, Bush, bushing, Casing Assembly, Clamp Assembly, Clip Assembly, Collar Assembly, Connector Assembly, Cover Plate, Diode, Dowel Pin, Electrical Wire used in Tank, End Mill, Fanuc Fuse, Fixture for Assembly, Flange, Gasket Assembly, Gasket Rubber, All type of Gauge, Gear Box, Gusset Plate, Hinge Assembly, Hose Assembly, All type of Hydraulic items used in tank, Insert carbide, Jig Drill, Knob Assembly, Latch Assembly, Leather washer, Lock Assembly, Mandrel Assembly, Milling Fixture, Needle Bearing, Nozzle Assembly, Oil Seal, Panel Assembly, Pipe Assembly, Planet Pinion, Plate Assembly, Plug Gauge, Retainer Steel, Rib Assembly, Shaft Assembly, Shim, Sleeve Assembly, Spacer, Spindle Steel, All types of spring, Stiffener, Stop Steel, Stopper Steel, Strap Assembly, Strip Assembly, Sub-Assemblies, Support Assembly, Thyristor, Torsion Bar, Tube Assembly, Turret, Twist Drill, Valve Assembly, Washer( Rubber made or Steel made), Wedge, Worm Wheel, Worm Gear, Worm Shaft, Yoke Assembly. 
5. If the vendor is supplying parts under an HSN code other than 87100000, is it necessary that it has to be supplied under the same HSN code on what the vendor is charging?