Booming new‑energy‑vehicle industry accelerates mass adoption of CTP and CTC integrated‑battery structures. Vehicle lightweight and battery‑pack integration drive higher consumption of self‑clinching nuts, studs and floating clinch fasteners compared with traditional fuel cars. These clinching components are widely adopted on battery trays, e‑control housings, motor shells and BMS enclosures, expanding market size of domestic clinch fasteners. Driven by cost‑reduction and local‑supply policy, MRO fastener distributors are evolving from spare‑part suppliers into deep‑involved supply‑chain partners for auto‑part manufacturers.

Compared with welding processes, self‑clinching assembly avoids thermal deformation and fits high‑speed automatic production lines. Battery‑pack operating environment imposes strict requirements on tensile strength, shear resistance, salt‑spray resistance and thermal‑cycle performance. Some high‑voltage modules also demand stable thread conductivity and bonding continuity. Ordinary electro‑plated carbon‑steel clinch parts are phased out, while SUS304, SUS316 and special‑alloy clinch fasteners gain wider adoption.

Procurement patterns for OEMs and tier‑suppliers are changing. Mass‑volume orders are directly placed with original manufacturers. While R&D prototyping, sample validation, production‑line spare‑parts and small‑batch component orders feature multiple SKUs, low lot‑size and frequent drawing revision. Self‑stocking brings dead‑stock risk, mixed‑version confusion and unexpected line‑stop. MRO vendors with VMI consignment, fast sampling and flexible multi‑item delivery can deliver standard clinch parts, custom modification, incoming inspection and consignment‑inventory management as one‑stop solution.

Existing supply‑chain pain‑points: inconsistent pressing‑force, pull‑out and torque performance among different manufacturers even for identical dimensions; incomplete test documentation including material certificate and salt‑spray report which are mandatory for NEV traceability; frequent drawing revision creates obsolete inventory; growing custom‑clinching‑part requests require flexible modification capability.

MRO upgrading suggestions: Equip hardness tester, torque tester, salt‑spray chamber and PMI spectrometer to provide batch‑wise inspection reports for traceability; build abundant spot inventory of standard clinch nuts, studs and floating nuts for short sampling lead‑time; deploy VMI consignment for mass‑production component factories to release customer’s inventory pressure; implement part‑version management to clear obsolete stock after drawing update; improve custom‑part response for sheet‑metal housing projects.

Market competition shifts from pure price‑oriented bidding toward stable delivery, complete documentation and inventory service capability. Distributors only focusing on resale will be phased out. Comprehensive MRO suppliers with technical support, inspection and consignment‑management capacity gain better access to NEV component supply chains.

Driven by continuous NEV market expansion, clinch‑fastener demand will keep growing. Domestic clinching‑part manufacturing realizes progressive import‑substitution. As critical intermediate link between factories and end‑users, MRO supply‑chain services will play greater roles in prototype development, small‑batch production and maintenance‑spare‑part scenarios.