MECHANICAL ASSEMBLY WORKER (MARKET COMPETITIVE)

The Mechanical Assembly Worker (BPS-04) serves as a skilled tradesperson within the production workshops of the Industrial establishment, responsible for the precise fitting, assembly, and sub-assembly of mechanical components, sub-systems, and machinery units according to engineering drawings and technical specifications. This role forms the backbone of the manufacturing floor, ensuring that fabricated parts are correctly integrated to meet dimensional tolerances, functional requirements, and quality standards before final testing or dispatch. The incumbent works under the supervision of a Foreman or Chargehand, contributing directly to production targets and the operational readiness of industrial plant equipment.

Daily workflow involves interpreting assembly drawings and bills of materials (BOM), identifying and retrieving components from stores, and performing bench or floor assembly using hand tools (spanners, wrenches, hammers, files), power tools (impact drivers, pneumatic drills), and precision measuring instruments (vernier calipers, micrometers, dial gauges, torque wrenches). The worker executes bolting, doweling, keying, shimming, and alignment procedures, records assembly data in job cards and inspection sheets, and performs first-off/self-inspection for dimensional accuracy and fit. Career progression follows the trade ladder: Senior Assembly Worker (BPS-06), Chargehand (BPS-09), and Foreman (BPS-11/14) based on trade test qualifications and seniority.

Selection for this Category B post is conducted strictly through a Practical Skill/Trade Test and Oral Viva Voce; no written examination is administered. Candidates are evaluated on a live assembly task requiring demonstration of blueprint reading, component identification, tool selection, fitting techniques, torque application, and measurement verification within a stipulated time. The practical test carries 70 marks and the Viva Voce 30 marks. Merit is determined solely by the aggregate score, subject to meeting the minimum qualifying threshold in the practical component.

• ✓Interpret mechanical assembly drawings, exploded views, and bills of materials to determine sequence of operations and component specifications
• ✓Select, inspect, and prepare hand tools, power tools, lifting tackle, and precision measuring instruments required for the assembly task
• ✓Perform fitting operations including filing, scraping, reaming, and deburring to achieve required clearances, fits, and surface finishes on mating parts
• ✓Assemble sub-assemblies and final units by bolting, torquing, doweling, keying, circlip installation, and shimming per torque charts and engineering tolerances
• ✓Verify dimensional accuracy, alignment, squareness, and functional movement using vernier calipers, micrometers, dial indicators, and surface plates
• ✓Maintain workshop housekeeping, tool calibration schedules, and complete job cards, non-conformance reports, and material requisition slips accurately

• 💡Proficiency in reading and interpreting ISO/GDT mechanical engineering drawings, sectional views, and welding/fabrication symbols
• 💡Expert use of hand tools (spanner sets, torque wrenches, Allen keys), portable power tools, and bench machines (drill press, grinder)
• 💡Competence in precision metrology: operating vernier calipers (0.02mm), micrometers (0.01mm), dial test indicators, and height gauges
• 💡Applied knowledge of fits, tolerances (H7/g6, H7/p6), limits, allowances, and surface roughness symbols for mechanical assembly
• 💡Understanding of fastener grades (8.8, 10.9, 12.9), torque tightening sequences, locking methods (Loctite, lock nuts, wire locking), and sealing procedures
• 💡Adherence to industrial safety standards (PPE, lockout-tagout, crane/forklift signaling), 5S housekeeping, and ISO 9001 quality procedures