Vertical Knurled Aluminum Control Knob Black Blind Bore Potentiometer Knob with

Our solid end knurled knob is precision-produced from premium 6061 aluminum alloy via mature multi-step CNC machining workflow. The component adopts vertical straight knurled on outer circumference to boost anti-slip grip during manual rotation; the inner bore is blind non-through hole with one closed end, paired with a side tapped set screw hole to fasten onto matching rotating shafts securely. After deburring and ultrasonic cleaning, parts receive black hard anodized surface treatment for improved wear resistance and anti-corrosion performance. As an experienced custom manufacturer focusing on OEM production, we provide flexible custom service to tailor overall size, inner hole diameter, knurled pitch, tapping specification and anodize color according to clients’ technical drawings or physical samples to satisfy diversified adjustment control needs across civilian industrial sectors.

• The aluminum set screw knob serves as core adjustment fitting widely used in civilian industries: digital instrumentation potentiometer tuning, laboratory testing equipment control panel, audio & electronic device adjustment, automation small control equipment, medical analytical equipment, office automation machinery, precision testing instrument knob assembly.

As a reliable custom manufacturer, comprehensive OEM & custom service is accessible for all orders:

• Custom overall length, outer diameter, blind inner hole size based on customer samples or engineering drawings
• Custom knurled type: vertical knurled, diamond knurled or smooth surface per assembly requirement
• Custom side hole quantity, thread specification and tapping position
• Multiple optional surface finishes: various anodizing colors, sandblasting, polishing under custom service
• Flexible MOQ supporting prototype small-batch trial and large-scale mass OEM orders

• Uniform vertical knurled design prevents hand slipping during knob rotation, solving inconvenient operation caused by smooth-surface inferior knobs
• Precision CNC controlled blind bore tolerance eliminates wobble & loose fit after shaft installation, reducing equipment debugging cost
• Standard tapped set screw hole enables stable shaft locking to avoid knob shifting during long-time equipment operation
• Black hard anodized coating effectively avoids aluminum scratch and oxidation, cutting post-installation replacement frequency
• One-stop OEM custom service avoids mismatched dimension issues from off-the-shelf standard knobs for non-standard equipment projects

• Incoming raw material inspection to verify 6061 aluminum alloy material certification before production start
• First article inspection after knurling & CNC turning setup to confirm dimensional compliance
• Thread go/no-go gauge testing for side tapped set screw hole to guarantee interchangeability
• Full dimensional measurement for all finished knobs with precision calipers and micrometers
• Final appearance & surface finish inspection after cleaning and anodizing before packaging and delivery

• Can I get custom-sized potentiometer adjustment knob with non-standard inner bore size? Yes, our OEM custom service supports fully customized dimensions following your drawings or samples.
• What is your standard dimensional tolerance for this blind bore control knob with set screw? Key dimensions are strictly controlled within ±0.02mm, tighter tolerance can be customized for high-precision projects.
• Can I change knurled pattern from vertical knurled to diamond knurled? Absolutely, different knurled styles are available via our custom service.
• Do you accept small prototype orders for custom aluminum set screw knob? Yes, flexible MOQ supports low-volume trial orders and mass OEM production.