Stepped Hollow H62 Brass Conductive Terminal Electrical Insert Connector Fitting with Internal Thread & Flat Clamping Lugs

This custom hollow brass terminal, also named CNC stepped hollow brass conductive terminal and hollow brass electrical insert, is fully precision machined from solid H62 brass bar. Integrated CNC turning fabricates stepped outer diameters, full through straight bore, head shoulder and dual milled flat clamping lugs for easy fixture holding during assembly. The large head inner cavity is precision tapped for internal thread matching mating fasteners. All inner & outer surfaces plus through bore are deburred and inner bore fine polished to eliminate rough edges and reduce contact resistance. After machining, parts receive passivation anti-tarnish treatment to resist oxidation and extend service life. Every internal thread brass threaded bushing undergoes strict full inspection with thread go/no-go gauges, dimensional tolerance and concentricity testing to guarantee stable electrical connection performance. As a reliable OEM manufacturer, we provide full custom service to adjust length, stepped outer diameters, bore size, thread specification and milling structure based on your technical drawings or physical samples for all electrical hardware assembly projects.

Our cnc stepped hollow brass conductive terminal and milled flat brass connector fitting serves as core electrical conductive connection components across wide civilian electronic industries:

• Precision electronic equipment internal conductive connection terminals
• Sensor, probe and testing instrument electrical contact inserts
• Power supply module, charging equipment internal conductive fittings
• Communication signal transmission terminal connectors
• Household electrical control board connection inserts
• Automated industrial equipment wiring conductive terminals
• Medical small electronic device contact brass inserts
• Instrumentation miniature circuit connection threaded bushings

As a professional OEM custom manufacturer, we deliver one-stop custom service for all types of custom hollow brass terminal, internal thread brass threaded bushing and hollow brass electrical insert:

• Custom CNC machining from customer 2D/3D CAD drawings (DWG, STEP, IGES, PDF).
• Sample duplication custom service per customer physical prototypes.
• Custom adjust length, stepped outer diameters, inner bore, thread specs and flat milling geometry.
• Optional surface treatments: polishing, passivation, tin plating, nickel plating, gold plating for enhanced conductivity.
• Flexible order batches: prototype small trial orders & mass volume bulk production supported.
• Custom marking, customized neutral packaging for large OEM orders.
• Free pre-production prototype sample service before mass manufacturing.

• Fix unstable conductive signal issue: H62 high-conductivity brass material + mirror polished inner bore minimize contact resistance, guarantee stable electrical transmission for precision devices.
• Eliminate assembly slipping trouble: Dual milled flat clamping lugs enable stable fixture holding during installation, avoid rotation slippage when screwing mating parts.
• Solve thread matching failure risk: 100% thread go/no-go gauge inspection ensures qualified internal thread, prevent loose fit or thread damage during assembly.
• Resolve concentricity deviation defects: Integrated one-step CNC turning control concentricity within 0.01mm, avoid offset contact and poor electrical performance.
• Prevent brass oxidation tarnish failure: Passivation anti-oxidation treatment protects surfaces, extend service life in long-term indoor working environments.
• Reduce multi-supplier coordination cost: All turning, milling, tapping, polishing finished in-house, one-stop OEM custom service cut your procurement management workload.

• Raw Material Incoming Test: H62 brass bar chemical composition, hardness and conductivity inspection before cutting.
• In-process CNC Production Sampling: Real-time dimension & concentricity spot check during turning and milling.
• Thread Full Inspection: Each internal thread brass threaded bushing tested by matched go/no-go thread gauges.
• Post-processing Appearance Inspection: 100% visual check for burrs, scratches, deformation after polishing.
• Dimensional Precision Full Test: Micrometers and calipers verify all length, OD and bore sizes to meet ±0.02mm tolerance.
• Concentricity Precision Test: Coaxial measuring instrument to control concentricity within 0.01mm.
• Passivation Anti-oxidation Aging Test: Accelerated aging test to validate surface anti-tarnish performance.
• Batch Finished Goods Random Sampling Inspection before packaging and shipment, full production batch traceability.

• Can you customize non-standard size custom hollow brass terminal different from standard 22mm length?

  Yes, we are an OEM custom manufacturer, we adjust all dimensions, thread and milling structures per your drawings or samples.

• What is the minimum order quantity for prototype sample custom service?

  We support small trial samples with flexible low MOQ for pre-production performance testing.

• Can you provide full dimensional & thread inspection report for bulk orders?

  Yes, we can attach complete inspection test reports together with shipments upon your request.

• What drawing file formats do you accept for custom service of hollow brass electrical insert?

  We support DWG, STEP, IGES, PDF 2D and 3D engineering drawing files.

• Is gold plating or tin plating surface treatment available for higher conductivity demand?

  Yes, we provide multiple electroplating surface finishes as additional custom options for enhanced electrical performance.