Slotted Elastic Brass Contact Pin Swiss CNC Machined Knurled Brass Connector Pin for Injection Molding

Our custom slotted elastic brass contact pins are precision manufactured from premium H62 brass using advanced Swiss CNC lathes, designed as high-performance electrical and mechanical connection components. Featuring a cross-knurled (grid pattern) section, these knurled brass connector pins provide exceptional pull-out resistance when over-molded or pressed into plastic housings, preventing rotation and disconnection under load.

The unique slotted design creates elastic contact jaws, delivering consistent spring force for reliable electrical conductivity and vibration-resistant connections. All critical features—stepped diameters, locating shoulders, cross knurling, and precision slotted jaws—are completed in a single Swiss CNC machining operation, eliminating secondary processing and ensuring tight tolerances and concentricity. After passivation treatment, these passivated brass plug pins offer enhanced anti-tarnish and anti-corrosion performance for long-term use.

As a dedicated manufacturer, we provide full OEM and custom service, allowing customization of dimensions, slot configurations, knurl patterns, and finishes to meet your exact application requirements. These injection molded brass pin inserts are ideal for high-volume, precision applications requiring both mechanical retention and electrical connectivity.

• Product Name: Knurled Brass Connector Pin
• Material: H62 Brass (C27000)
• Overall Length: 38mm (customizable)
• Maximum Outer Diameter: 8.7mm (customizable)
• Structure: Through-hole, slotted elastic contact jaws, multi-step outer diameters
• Knurl Type: Cross/Diamond Knurl (grid pattern)
• Manufacturing Process: Swiss CNC turning, cross knurling, live tool milling for slotted jaws, deburring, ultrasonic cleaning, passivation
• Surface Treatment: Natural brass passivation (anti-tarnish, anti-corrosion)
• Dimensional Tolerance: ±0.02mm for critical dimensions
• Concentricity Tolerance: ≤0.01mm
• Package: Moisture-proof packaging

These slotted elastic brass contact pins are widely used in electrical, electronic, and industrial connection applications:

• Electrical connectors and terminal blocks
• Consumer electronics internal connections
• Automotive electronic components and sensors
• Medical device and instrumentation assemblies
• Industrial control equipment and automation systems
• Household appliances and power distribution components
• Injection molded plastic assemblies requiring embedded electrical contacts

As a professional custom manufacturer, we offer comprehensive OEM and custom service for precision brass contact pins:

• Custom dimensions: Length, outer diameters, hole sizes, and slot configurations per your drawings
• Custom contact design: Elastic jaw slots, contact geometry, and spring force specifications
• Custom knurl patterns: Cross knurl, straight knurl, or custom profiles with different pitches
• Material options: H62 brass, lead-free brass, or other copper alloys
• Surface treatments: Passivation, plating (tin, nickel, gold), or other custom finishes
• Production support: Prototyping, small-batch trial runs, and high-volume mass production

• Integrated Swiss CNC machining: All features (turning, knurling, slot milling) completed in one setup, eliminating alignment errors and secondary processing costs
• Cross-knurl retention design: Ensures maximum mechanical grip with plastic in injection molding applications, solving common issues like loosening or pull-out
• Slotted elastic contact structure: Delivers consistent spring force and reliable electrical conductivity, preventing intermittent connections under vibration
• Tight tolerance control: ±0.02mm dimensional accuracy and ≤0.01mm concentricity ensure perfect mating with your components
• Natural passivation treatment: Enhances anti-tarnish and anti-corrosion performance, maintaining conductivity and appearance in humid environments
• Flexible custom service: OEM support for custom designs to match unique electrical, mechanical, and assembly requirements

• Raw material inspection: 100% incoming verification of H62 brass composition and quality
• In-process dimensional checks: Real-time testing during Swiss CNC machining to maintain tight tolerances and concentricity
• Knurl quality inspection: Verify cross knurl depth, pitch, and uniformity for consistent pull-out resistance
• Slot and elastic jaw inspection: Check slot dimensions, jaw symmetry, and spring force performance
• Surface treatment verification: Test passivated finish for anti-tarnish and anti-corrosion properties
• Full visual inspection: Remove all burrs, scratches, and surface defects
• Final functional testing: Verify fit, contact performance, and retention strength to meet specifications
• Packaging inspection: Moisture-proof packaging with batch tracking to prevent contamination and damage

• Can we customize the dimensions and slot design of these brass contact pins? Yes, we offer full custom and OEM service, and can manufacture slotted elastic brass contact pins strictly based on your drawings or samples.
• What material is used for these knurled connector pins? The standard material is H62 brass; we also provide lead-free brass and other copper alloy options upon request.
• What surface treatments are available for these brass terminal pins? We offer natural passivation (standard), tin plating, nickel plating, and other custom finishes based on your conductivity and corrosion resistance requirements.
• What is the typical tolerance for these Swiss CNC machined brass terminals? Critical dimensions have a tolerance of ±0.02mm, with concentricity controlled within ≤0.01mm for high-precision applications.
• Do you accept small-batch or prototype orders? Yes, we support prototype samples, small trial orders, and large-scale mass production to meet different project needs.