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CNC Machining Insert Nuts for Solar Battery Box

Our facility manufactures precision brass and 303 stainless steel insert nuts engineered specifically for PC+ABS solar battery enclosure assemblies. These double-knurled threaded inserts are embedded via ultrasonic welding or heat-staking into injection-molded thermoplastic housings, creating permanent metal threads that eliminate stripping risks. Each lot is validated for minimum 5 N·m torque-out resistance and 500 N axial pull-out strength per internal test protocols. With RoHS-compliant nickel or tin surface plating, our inserts withstand 48-hour neutral salt spray, prolonged UV exposure, and operating temperatures from -40°C to +85°C. The symmetrical diamond-knurl profile ensures balanced plastic displacement and anti-rotation locking, maintaining consistent sealing pressure across outdoor photovoltaic energy storage enclosures. All inserts receive 100% thread-go gauging and statistical process control.

M4 Brass Insert Nuts for Tab/Lug Bracket and Battery Module

M4×18mm brass insert nuts are reliable threaded fastening components engineered for tab/lug bracket mounting and battery module assembly. Made of high‑quality brass material, these M4 insert nuts feature excellent ductility, outstanding electrical conductivity and superior anti‑corrosion performance. When embedded into plastic or composite housings, they create durable internal threads that avoid thread stripping caused by frequent screw tightening, greatly improving connection stability for tab and lug contact brackets.
Widely adopted in energy storage units and electric vehicle battery packs, these brass insert nuts serve as a cost‑effective choice for both mass OEM production and custom battery module projects.

M6 Nickel‑Plated Brass Insert Nuts for Terminal Housing Assemblies

M6 nickel‑plated brass insert nuts are high‑performance threaded inserts custom‑suited for terminal housing applications.
Crafted from premium brass substrate, these M6 insert nuts possess good ductility and stable electrical conductivity. The nickel plating further upgrades surface hardness and anti‑rust property, effectively resisting oxidation and environmental contamination, avoiding contact failure caused by corrosion. Once pressed or molded into plastic terminal housings, they form robust internal threads, eliminating thread stripping issues that happen with direct screwing into plastic.Well‑adapted for electrical control units, connector enclosures and power terminal assemblies, these nickel‑plated brass inserts deliver consistent, cost‑effective fastening performance for OEM manufacturing and electronic component projects.