Engineered for Electrification.

EV battery packs use high-tensile alloy steel bolts for module-to-pack compression, PEM self-clinching nuts for busbar connections in thin enclosure walls, thread-forming screws for aluminum trays, blind rivets for enclosed shielding panels, compression limiters for composite structures and captivated screws for service panels. CSG supplies them in steel, stainless, aluminum, brass and copper alloy with material certifications.

Motor housings and gearbox assemblies use vibration-rated bolts and thread-forming screws such as TAPTITE PRO and Powerlok II, which cut their own threads in aluminum or magnesium and resist back-off. Captivated panel screws and floating nuts speed up motor and inverter cover assembly. Cable clamps route motor phase wiring. CSG supplies all of these for automated and manual lines.

Current-carrying fasteners are bolts and studs that hold parts together and also carry high electrical current. They are used in battery management system connections, grounding circuits, onboard charger integration and DC fast-charging interfaces. CSG supplies eConnect and similar current-carrying fasteners in copper alloy and plated steel, alongside PEM self-clinching nuts and studs for busbar joints.

Use more than one method, matched to the joint. Prevailing torque features such as nylon patches or deformed threads hold preload, thread-forming screws create interference-fit threads that resist back-off, thread-locking compounds suit permanent joints, and self-clinching nuts with anti-rotation features work on busbars and enclosures. CSG engineers match the solution to each application’s vibration profile.

IP67 means an enclosure is dust-tight and survives temporary immersion in water up to 1 meter. IP68 means it is dust-tight and survives continuous immersion under conditions set by the manufacturer. For battery packs, these seals keep out moisture that could cause short circuits or corrode cooling channels. CSG supplies IP67/IP68 rated battery enclosure seals and gaskets.

In many non-structural joints, yes. Replacing steel hardware with aluminum equivalents can reduce fastener mass by 40 to 60% while keeping the required clamp load and tensile strength. Joints that carry crash or structural loads stay with the grade your safety validation calls for. CSG supplies lightweight aluminum bolts, screws and cable clamps for EV lightweighting programs.

Yes. CSG supplies standard and made-to-print fasteners for automotive programs, including occupant restraint hardware. On an FCA Jeep Wrangler program, CSG’s engineering team designed a custom-machined mating collar that strengthened a seatbelt restraint anchor, then produced reworked parts to keep the line running until the permanent cold-formed part was ready. Share your drawing to start.

Yes. CSG supplies high-current fuses and contactors that protect battery cells, inverters and onboard electronics and allow controlled disconnection of the high-voltage system during service. For electromagnetic interference, CSG supplies EMI/RFI shielding gaskets, conductive hardware and shielded enclosure components that protect ADAS sensors and onboard electronics from inverter and motor noise.

Through vendor managed inventory. CSG holds customer-dedicated safety stock at the CSG Distribution Center, triggers replenishment from actual consumption and times deliveries to your line schedule, so supply speeds up when the ramp does. Bufab’s global network backs sourcing for specialty parts. Many EV OEMs run bolts, clinch nuts, compression limiters and rivets on VMI.