Brass Knurled Mini Instrument Knob CNC Turning Machined Blind Hole M2.5 Thread Adjustment Knob Gold Plated

This custom mini instrument knob is precision-manufactured by automatic CNC Turning equipment as an OEM custom manufacturer, adopting premium H62 brass raw material. The outer cylinder wall features diamond knurling texture to boost anti-slip operation during twisting adjustment. The inner cavity is processed with blind hole M2.5 female thread, one end fully sealed without penetration. After CNC Turning forming, products go through fine mechanical polishing followed by electroplated gold surface finishing to improve corrosion resistance and metallic texture. Our factory provides full custom service to revise dimension, thread size, surface treatment and knurling pattern according to global clients’ technical drawings or physical samples for diverse precision equipment assembly projects.

• Precision laboratory testing instruments & analytical equipment adjustment assemblies
• Medical electronic diagnostic device control panel tuning knobs
• Optical measuring instruments, microscope fine-tuning adjustment components
• Precision industrial sensor & small automation equipment regulating knobs
• High-end audio & electronic testing equipment control parts

As a professional OEM custom manufacturer, our full custom service covers:

• OEM dimension customization: Modify overall length, outer diameter, inner thread specification (M2/M3/M2.5 etc.) against client drawings or samples
• Custom surface options: Swap gold plating to nickel/tin plating or raw polished brass finish as needed
• Knurling customization: Change diamond knurl to straight knurling or smooth outer surface per design request
• Material upgrade: Replace H62 brass with C3604 brass, stainless steel or aluminum alloy upon customer’s application demand
• Small batch trial production & mass bulk production support for global buyers.

• Knurled outer surface solves easy slipping issue during manual fine adjustment of precision instruments
• Blind hole inner thread avoids screw penetration damage to internal equipment core components
• Gold plated finish effectively prevents brass oxidation, resolving rust and tarnish failure under long-term humid working environment
• High-precision CNC Turning machining with ±0.02mm tolerance eliminates loose fit or thread mismatching trouble during assembly
• Stable H62 brass base ensures rigid structure, preventing knob deformation after frequent repeated twisting operation.

• Raw H62 brass incoming inspection for material composition compliance before production
• Online dimensional inspection during CNC Turning processing to control tolerance within ±0.02mm
• Thread go/no-go gauge testing for all blind hole M2.5 holes to guarantee screw matching accuracy
• Post-polishing & gold-plating appearance inspection to exclude plating blister, scratch defects
• Random finished product sampling test for anti-corrosion performance before shipment for custom OEM orders.

• Q: Can you provide OEM custom service to change the knob size and thread specification?

  A: Yes, as custom manufacturer, we support full customization based on your technical drawings or physical samples.

• Q: What is your minimum order quantity for this brass instrument knob?

  A: Small trial order is acceptable, flexible MOQ for custom OEM production.

• Q: Is it possible to adjust surface finish instead of gold plating?

  A: Sure, we offer nickel plating, bright polishing and other surface options via our custom service.

• Q: What is your typical lead time for custom knob bulk production?

  A: Standard lead time 7-15 working days after your custom drawing confirmation.