Small Parts, Big Impact In Auto Manufacturing

By Author: Pujitha
Total Articles: 90
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When people think about what holds a modern vehicle together, fasteners rarely come to mind. Yet bolts, screws, rivets, clips, and specialized joining solutions are fundamental to every vehicle rolling off an assembly line. The global automotive fasteners market, valued at USD 24 billion in 2025, is projected to reach USD 31.08 billion by 2031 at a CAGR of 4.40%, reflecting just how central these components are to the future of mobility.
Why Fasteners Are More Important Than Ever
The automotive industry is undergoing three simultaneous shifts: the transition to electric vehicles, the push for lighter vehicle designs, and the rise of highly automated manufacturing. Each of these shifts is changing what fasteners need to do and how they are specified, sourced, and validated.
OEMs including Toyota, Volkswagen, General Motors, and Hyundai no longer treat fasteners as commodity hardware. Instead, they are increasingly viewed as engineered joint solutions. Safety-related joints, sealing interfaces, and connections between mixed materials require consistent holding force, stable tightening outcomes, and durable corrosion ...
... protection across the entire vehicle lifespan. This shift in thinking is raising the bar for suppliers and pushing purchasing criteria toward stricter technical specifications, earlier supplier involvement, and stronger traceability requirements.
The EV Effect on Fastener Demand
Electric vehicles are reshaping where fastener value sits within a vehicle. As combustion engines and exhaust assemblies give way to battery packs, high-voltage hardware, and power electronics, the zones requiring high-performance fastening solutions are moving with them.
In 2024, global electric car sales exceeded 17 million units, rising more than 25% year on year and crossing 20% of total global car sales. As battery packs take on larger structural and protective roles, enclosure and mounting joints require dependable sealing, crash robustness, and repeatable assembly performance. This increases the engineered fastener content per vehicle in battery and power electronics zones, creating a meaningful shift in where value is concentrated within a vehicle's assembly.
A concrete example of this evolution is Agrati's MARBEL modular EV battery concept, which uses standard screwed fasteners to enable easier assembly, disassembly, and recyclability of battery packs. This approach reinforces the role of high-reliability screwed joints as electrified platforms continue to expand across passenger and commercial vehicle programs.
Platform Consolidation and Standardization
One of the most significant structural trends shaping fastener demand is the consolidation of vehicle development around modular platforms. Volkswagen's Modular Transverse Toolkit, known as MQB, has produced more than 32 million vehicles across the group, demonstrating how a single architecture can scale across many nameplates and manufacturing plants. Stellantis similarly uses shared platforms with capacity of up to 2 million units annually, while Toyota's TNGA platform has reportedly delivered a 20% reduction in development resources through smart sharing and supplier collaboration.
For fastener suppliers, platform consolidation creates an incentive to secure early joint sign-off and be included in the approved joint library for a given platform. Once a fastener solution is validated and embedded in a platform, it benefits from high-volume, repeatable demand across all models built on that architecture.
Lightweight Materials Changing the Mix
The push to reduce vehicle weight, driven by both fuel efficiency standards and EV range optimization, is increasing the use of aluminium, composites, and plastics in vehicle structures. This shift is reshaping the material composition of fasteners themselves.
Iron currently holds the largest market share at over 45% in 2025, and steel remains the default choice for high-volume structural and underbody systems. However, aluminium is growing rapidly, particularly in electrified vehicles and light trucks. The Aluminum Association's automaker survey projects that battery electric light trucks will average 644 pounds of aluminium content by 2030, with growth concentrated in battery housings and electric motor components. Higher aluminium content increases the need for compatible fasteners and corrosion protection at contact points where aluminium meets steel or other materials.
Non-threaded fasteners, including clips, rivets, and adhesives, are also gaining ground. Jaguar's aluminium body architecture illustrates this trend, with the company increasing adhesive bonding lines by 50% to a total of 154 meters and using approximately 2,840 rivets in the Jaguar XJ. Non-threaded fasteners are projected to grow at a CAGR of 4.78% through 2031, supported by EU fleet CO2 regulations that continue to emphasize vehicle weight reduction targets.
Where Demand is Coming From
Passenger cars represent the largest segment by vehicle type, supported by an installed base of over 260 million registered passenger cars in the EU alone. The engine segment currently holds the largest share by application, as hybrid and combustion vehicles still dominate new registrations. ACEA reported that hybrids captured over 34% of EU new car sales in 2025, while petrol and diesel vehicles together added a further 34%, meaning most new vehicles still carry engine assemblies with dense fastening requirements.
Interior trim is projected to show significant growth through 2031, driven by the expanding installation of mandatory safety systems. The EU General Safety Regulation requires features such as intelligent speed assistance, reversing detection, driver drowsiness warning, and event data recorders across new vehicles, all of which increase the number of modules behind dashboards, pillars, and seats and raise fastening intensity within interior assemblies.
The aftermarket channel is expected to show the highest growth rate among distribution channels. With EU vehicles averaging 12.3 years of age, repair and maintenance activity sustains steady demand for replacement screws, clips, and underbody hardware. In Great Britain alone, 35.23 million vehicle fitness checks were carried out in 2024 to 2025, with over 27% of vehicles failing the first inspection, highlighting the volume of repairs where fasteners are removed and replaced.
Competitive Landscape and Recent Moves
The global automotive fastener market is broad and layered. The top 20 suppliers hold roughly half of total market share, with competition driven increasingly by engineering support, launch execution, joint validation capabilities, and production approval readiness rather than price alone. There are 98,803 IATF 16949 certified sites globally as of January 2025, reflecting the quality baseline that shapes supplier selection.
Illinois Tool Works maintains a strong position through its broad engineered fastener portfolio aligned with lightweight vehicle platforms. ARaymond completed the full acquisition of FACIL in June 2025, expanding its industrial service capabilities and accelerating consolidation around integrated fastening offerings. Nifco demonstrated its design innovation credentials with a self-sealing bumper retainer for Toyota that achieves watertight performance without a rubber gasket and enables one-touch fastening without power tools, simplifying assembly in high-volume exterior production.
Nifco also began mass production of WaOSaFe in November 2025, a wheel nut indicator for large trucks that enables quick visual checks for nut loosening. Agrati, meanwhile, joined ANEF through its TOKBO subsidiary in May 2025, strengthening its presence in digital fastening assurance and bolted joint monitoring solutions.
The Road Ahead
Automotive fasteners occupy a unique position in the vehicle supply chain. They are small in size but critical in function, and the demands placed on them are growing alongside the complexity of modern vehicles. As EVs scale, platforms consolidate, interiors become more electronics-dense, and repair activity sustains aftermarket volumes, the fastener industry is well-positioned for steady, broad-based growth through 2031 and beyond.