It looks like “TATA 1312 (both side thin)” is most likely referring to a specific spare part specification for Tata 1312 commercial trucks — particularly a propeller shaft flange/coupling with a “thin” type on both sides used in drivetrain assemblies (e.g., CWP / Coupling With Pinion) or similar gearbox/axle connection parts that can come in thin or thick versions depending on vehicle fitment.
Here’s what this generally means:
🔩 Meaning of “Both Side Thin” for TATA 1312
In parts catalogs for commercial vehicles like the Tata 1312, some shafts/flanges are specified as “thin” flange types on either end. These specifications are often given for CWP (Coupling With Pinion) or U‑joint companion flange parts where the flange thickness/shape changes depending on gearbox or axle mating.
“Both side thin” implies that both ends of the mentioned component (for example, the propeller shaft CWP or couplings) are of the thin flange type, meaning the flange thickness/profile on both sides of the part uses the thin version.
Commercial truck parts like couplings often come in different flange thickness profiles (e.g., thin, thick, standard) to fit various mating components — so this detail helps ensure the correct fit.