Skip to main content
Home / Electronic Components Market / Solid Pure Aluminum Alloy Potentiometer Knob Cap Diameter 17/21/24/25/38/4mm Inner Hole 6mm

Attributes

Brand -
Category Root / Electronic Components Market
Origin -
Material Solid Pure Aluminum Alloy
Available Diameters 17mm, 21mm, 24mm, 25mm, 38mm, 4mm
Inner Hole Size 6mm
Finish Type Anodized Matte
Color Options Silver, Black, Gold, Red, Blue
Mounting Style Set Screw Fixation
Compatibility Standard Potentiometer Shafts
Weight per Unit Approx. 5g - 15g (varies by size)
Package Contents 1 x Knob Cap, 1 x Set Screw
Application Area Audio Equipment, DIY Electronics, Industrial Controls

6 reviews

A

Anonymous

Mar 26, 2026

Rating: 5/5

Perfect fit for my audio project

The build quality is exceptional. The aluminum feels solid and the anodized finish matches my chassis perfectly. The 6mm hole fit my shafts without any wobble.

A

Anonymous

Mar 25, 2026

Rating: 3/5

Good but limited color stock

The quality is good, but the blue color I wanted was out of stock. Had to settle for black. Product itself works as described though.

A

Anonymous

Mar 25, 2026

Rating: 5/5

Exactly what I needed

Restoring vintage radios requires specific sizes. The 24mm option was hard to find elsewhere. Fits perfectly and looks authentic.

A

Anonymous

Mar 12, 2026

Rating: 4/5

Great value, minor shipping delay

The knobs themselves are fantastic for the price. Very sturdy and look professional. Only giving 4 stars because shipping took a bit longer than expected.

A

Anonymous

Mar 09, 2026

Rating: 5/5

Premium feel

These replace the cheap plastic knobs on my amplifier beautifully. The weight adds a nice tactile feel when adjusting volume. Highly recommended.

A

Anonymous

Mar 04, 2026

Rating: 5/5

Bulk order success

Ordered fifty units for our workshop. Consistency across all pieces was impressive. The set screws included were a nice touch.

5 FAQ

Q: Do you offer a 30mm diameter option?

A: Currently, we only stock diameters of 17mm, 21mm, 24mm, 25mm, 38mm, and 4mm. We do not have a 30mm version at this time.

Q: Does this come with the screw needed to secure it to the shaft?

A: Yes, each knob cap includes a matching set screw for secure fixation to the 6mm shaft.

Q: Are these suitable for high-temperature environments?

A: Aluminum alloy has good heat resistance, but please ensure the specific operating temperature of your device does not exceed the limits of the anodized coating or surrounding components.

Q: Can I use this on a shaft that is slightly smaller than 6mm?

A: The inner hole is precisely 6mm. For smaller shafts, you may need to use a shim or bushing to ensure a tight fit, as the set screw alone might not hold securely.

Q: Is the red color a bright fire-engine red or more of a dark maroon?

A: The red finish is a vibrant, standard anodized red, similar to a fire-engine red, not maroon.

Explore your interests

View More
All Categories
Best Seller (30)
New List (30)
Magnetic Refrigerator Side Storage Rack - No-Drill Wall Organizer for Spices and Utensils

Magnetic Refrigerator Side Storage Rack - No-Drill Wall Organizer for Spices and Utensils

$9.10

Multi-Function Car Tire Stone Removal Hook Tool for Picking and Digging Out Debris

Multi-Function Car Tire Stone Removal Hook Tool for Picking and Digging Out Debris

$7.35

Suction Cup Sink Strainer - Disposable Kitchen Drain Filter for Food Scraps and Waste

Suction Cup Sink Strainer - Disposable Kitchen Drain Filter for Food Scraps and Waste

$14.30

Kimberly-Clark Wiper Paper, Industrial Cleaning Wipes for Oil and Grease, Factory & Laboratory Use

Kimberly-Clark Wiper Paper, Industrial Cleaning Wipes for Oil and Grease, Factory & Laboratory Use

$963.52

Loose Gold Rutilated Quartz Beads, Donghai Agate, Chalcedony, Jade, Cat's Eye, Titanium Crystal, Aquamarine, White and Yellow Crystal Single Beads for Bracelets

Loose Gold Rutilated Quartz Beads, Donghai Agate, Chalcedony, Jade, Cat's Eye, Titanium Crystal, Aquamarine, White and Yellow Crystal Single Beads for Bracelets

$8.42

Faucet Drain Mat, Non-Slip Countertop Pad for Kitchen and Bathroom, Splash-Proof Sink Organizer, Thickened Mold-Resistant Silicone Mat

Faucet Drain Mat, Non-Slip Countertop Pad for Kitchen and Bathroom, Splash-Proof Sink Organizer, Thickened Mold-Resistant Silicone Mat

$3.78

New Pirelli Tire 255/40R20 101W AO PZERO PZ4 with Silent Cotton Original Fit for Audi A6L

New Pirelli Tire 255/40R20 101W AO PZERO PZ4 with Silent Cotton Original Fit for Audi A6L

$1,358.00

Oriental Pearl Dual Porcelain Jar Gift Set: Green Tea, Black Tea, Jin Jun Mei, Pu'erh Loose Leaf Tea in Porcelain Jars

Oriental Pearl Dual Porcelain Jar Gift Set: Green Tea, Black Tea, Jin Jun Mei, Pu'erh Loose Leaf Tea in Porcelain Jars

$149.00

Purified Water Bucket Stand Inverted Water Dispenser Pump Simple Mineral Water Drinking Machine Press Pump

Purified Water Bucket Stand Inverted Water Dispenser Pump Simple Mineral Water Drinking Machine Press Pump

$10.80

New Children's Gouache Paint Brushes DIY Hand-Painted Graffiti Art Class Watercolor Acrylic Paint Brushes Bristle Round Tip Brush

New Children's Gouache Paint Brushes DIY Hand-Painted Graffiti Art Class Watercolor Acrylic Paint Brushes Bristle Round Tip Brush

$6.41

Natural Clear Quartz Fully Clean Untreated Faceted Round Rice Beads - For Women's Bracelets, Spacer Beads, and DIY Crafts

Natural Clear Quartz Fully Clean Untreated Faceted Round Rice Beads - For Women's Bracelets, Spacer Beads, and DIY Crafts

$6.63

Sponge Brushes for Kids' Crafts and Creative Painting - Student Art Stamping Tools, DIY Sponge Paintbrushes

Sponge Brushes for Kids' Crafts and Creative Painting - Student Art Stamping Tools, DIY Sponge Paintbrushes

$13.86

Jiuchenggong Liquan Ming Tang Dynasty Ouyang Xun Yao Mengqi Copybook, Regular Script Brush Calligraphy Workbook, 3 Volumes, 188 Pages

Jiuchenggong Liquan Ming Tang Dynasty Ouyang Xun Yao Mengqi Copybook, Regular Script Brush Calligraphy Workbook, 3 Volumes, 188 Pages

$17.90

Shaped Watercolor Paper Ticket Stubs - Blank Postage Stamp Bookmarks with Serrated Edges, Thickened 300g Premium Cotton Pulp, Fine Texture for Art Hand Painting, Easy Blending, High Absorbency, Wrinkle-Resistant - Perfect for Postcards and Creative Cards

Shaped Watercolor Paper Ticket Stubs - Blank Postage Stamp Bookmarks with Serrated Edges, Thickened 300g Premium Cotton Pulp, Fine Texture for Art Hand Painting, Easy Blending, High Absorbency, Wrinkle-Resistant - Perfect for Postcards and Creative Cards

$9.85

Naitong Automatic Retractable Air Hose Reel with PU Braided Hose for Pneumatic Tools and Car Detailing

Naitong Automatic Retractable Air Hose Reel with PU Braided Hose for Pneumatic Tools and Car Detailing

$119.00

Premium Wall-Mounted Aromatherapy Empty Bottle – 100ML Plastic Square Diffuser Bottle with Wall-Mount Adhesive Sticker

Premium Wall-Mounted Aromatherapy Empty Bottle – 100ML Plastic Square Diffuser Bottle with Wall-Mount Adhesive Sticker

$2.98

Leyingfang Floating Pen for Kids' Water Drawing, Colorful Water-Soluble Suspended Markers, Erasable Watercolor Pens

Leyingfang Floating Pen for Kids' Water Drawing, Colorful Water-Soluble Suspended Markers, Erasable Watercolor Pens

$13.80

Loose Rose Quartz Beads, Donghai Agate, Chalcedony, Jadeite, and Madagascar Pink Crystal for DIY Jewelry Making

Loose Rose Quartz Beads, Donghai Agate, Chalcedony, Jadeite, and Madagascar Pink Crystal for DIY Jewelry Making

$6.72

Expandable Stainless Steel Sink Rack, Multi-Function Kitchen Drain Board for Fruits, Vegetables, and Utensils

Expandable Stainless Steel Sink Rack, Multi-Function Kitchen Drain Board for Fruits, Vegetables, and Utensils

$14.90

Transparent Retainer Case Aligner Storage Box Portable Carry-On Squeeze Bag Orthodontic Appliance Rubber Band Cleaning Box

Transparent Retainer Case Aligner Storage Box Portable Carry-On Squeeze Bag Orthodontic Appliance Rubber Band Cleaning Box

$18.50

Transparent Data Cable Organizer Bag for Travel - Portable Multi-Use Visible Storage for Digital Chargers and Cable Management

Transparent Data Cable Organizer Bag for Travel - Portable Multi-Use Visible Storage for Digital Chargers and Cable Management

$7.36

Finished Seal Calligraphy Finished Stone Stamp Sellos Chines

Finished Seal Calligraphy Finished Stone Stamp Sellos Chines

$108.58

Chunfei Grocery Store Commuter Hard Fork Low-Beam Mountain Bike for Urban Roads, Suburbs, School, and Outings

Chunfei Grocery Store Commuter Hard Fork Low-Beam Mountain Bike for Urban Roads, Suburbs, School, and Outings

$2,247.00

6-Cavity Large Square French Flower DIY Soap Silicone Mold for Essential Oil and Milk Soap

6-Cavity Large Square French Flower DIY Soap Silicone Mold for Essential Oil and Milk Soap

$4.93

Home Balcony Vegetable Planter - Self-Watering Plastic Pot for Strawberries and Succulents

Home Balcony Vegetable Planter - Self-Watering Plastic Pot for Strawberries and Succulents

$28.00

Pressure Swing Adsorption Nitrogen Generator - High-Purity Nitrogen Device for Heat Treatment

Pressure Swing Adsorption Nitrogen Generator - High-Purity Nitrogen Device for Heat Treatment

$36,456.00

6-Cavity 3D Rose Silicone Mold for DIY Soap Making Heat-Resistant Non-Stick Large Size for Milk Soap and Essential Oil Soap

6-Cavity 3D Rose Silicone Mold for DIY Soap Making Heat-Resistant Non-Stick Large Size for Milk Soap and Essential Oil Soap

$5.80

Traditional Handmade Baby Teething Rattle Sheepskin Wooden Clapper Newborn Toy Intangible Cultural Heritage

Traditional Handmade Baby Teething Rattle Sheepskin Wooden Clapper Newborn Toy Intangible Cultural Heritage

$29.85

Manufacturer Supply ZSJC02 Film Splicing Table, Alignment Table, Film Inspection Table

Manufacturer Supply ZSJC02 Film Splicing Table, Alignment Table, Film Inspection Table

$4,484.00

Box-Type Oxygen Generator Export Equipment - Stable Nitrogen and Oxygen Production for Wastewater Treatment

Box-Type Oxygen Generator Export Equipment - Stable Nitrogen and Oxygen Production for Wastewater Treatment

$25,000.00