What thread sizes do these thumb knobs come in?

They are available in M4, M5, M6, M8, M10, and M12 with standard metric coarse pitch. Outer diameter runs roughly 20 to 60mm depending on size. Pick the thread that matches your stud or bolt.

Where would I use these star hand-tighten nuts?

They let you clamp and adjust by hand with no tools. People use them on machine panels, jigs, fixtures, and 3D printers or CNC setups. The star knurl gives grip even with oily hands.

Will these knobs rust in a workshop?

They are steel with a black oxide finish that adds corrosion resistance. They handle a temperature range of -20C to +120C. Tighten by hand only, around 2 to 5 Nm max, since they are not made for wrench torque.

Thumb Screws & Knobs | M4 M5 M6 M8 M10 M12 Star Hand Tighten Nuts | Manual Clamping Hardware

Name: Thumb Screws & Knobs | M4 M5 M6 M8 M10 M12 Star Hand Tighten Nuts | Manual Clamping Hardware
Brand: Compel
SKU: FAST-00354
Price: 14.99 USD
Availability: InStock

Stock #:CMP-00884

SKU:FAST-00354

Thumb Screws & Knobs | M4 M5 M6 M8 M10 M12 Star Hand Tighten Nuts | Manual Clamping Hardware - Image 1

$14.99

Ships to United States · standard est. 10-20 business days

Free standard shipping on orders over $59 (under 2kg). Express available at checkout.

SizeSelect an option

ColorSelect an option

Quantity

Thumb Screws & Knobs | M4 M5 M6 M8 M10 M12 Star Hand Tighten Nuts | Manual Clamping Hardware

$14.99

Fast Shipping

Secure Payment

Easy Returns

Good to know

Questions about this product

What thread sizes do these thumb knobs come in?: They are available in M4, M5, M6, M8, M10, and M12 with standard metric coarse pitch. Outer diameter runs roughly 20 to 60mm depending on size. Pick the thread that matches your stud or bolt.
Where would I use these star hand-tighten nuts?: They let you clamp and adjust by hand with no tools. People use them on machine panels, jigs, fixtures, and 3D printers or CNC setups. The star knurl gives grip even with oily hands.
Will these knobs rust in a workshop?: They are steel with a black oxide finish that adds corrosion resistance. They handle a temperature range of -20C to +120C. Tighten by hand only, around 2 to 5 Nm max, since they are not made for wrench torque.

Fasteners spec sheet (PDF)

Get a one-page sheet with full description, specifications, technical details, FAQs, price & SKU - handy to save, print, or share.

Not sure which one?

Compare fasteners

This product

Black thumb nuts with star-shaped handles for manual tightening, available in various thread sizes including M4, M5, M6, M8, M10, and M12.

Thumb Screws & Knobs | M4 M5 M6 M8 M10 M12 Star Hand Tighten Nuts | Manual Clamping Hardware

Price$14.99

Rating4.9

Sold55+

Stock In stock

You're viewing this

Alternative

Stainless steel thumb screws with Z-handle bakelite knobs in M4, M5, M6, M8, and 1/4 UNC thread sizes for adjustable tightening.

Adjustable Thumb Screws | M4-M8 Stainless Steel Z-Handle | Bakelite Hand Knob

Price$14.95

Rating5.0

Sold27+

Stock In stock

View

Alternative

Set of knurled thumb screws with high step heads in various metric sizes (M3 to M10) for hand-tightening applications like curtain wall glass adjustment.

M3-M10 Thumb Screws | Knurled Hand-Tighten Bolts | Curtain Wall & Glass Adjust

Price$17.99

Rating5.0

Sold76+

Stock In stock

View

Compare options

More Fasteners

All Fasteners

50pc Plasterboard Fixings Kit | Heavy-Duty Self-Drilling | Gypsum Board Wall Plugs

5.0(66)

$16.99

Hex Socket Cap Screws | A2-70 304 Stainless Steel | M2 M3 M4 M5 M6 M8 Bolt Assortment

5.0

$16.99

Socket Insert Nuts | Zinc Alloy for Wood | M4-M10 Threaded Fastener Kit

5.0

$30.95

M4-M12 Flange Screws | A2-304 Stainless Steel | 10-Piece with Serrated Lock Washers

5.0

$15.99

Grub Screws | M2-M8 Black Carbon Steel & 304 Stainless Steel | Hexagon Allen Head Cone Point

5.0(21)

$9.95

Bearing Screws | M3-M6 304 Stainless Steel Hex Socket Cap Bolts | 10pcs/lot High Tensile

5.0

$32.95

Steel Furniture Screw & Nut Sets | M4-M8 Large Flat Hex | Rivet Connector Joint Kits

5.0

$14.95

Shape Rivet Nuts | M4 M5 M6 Panel Fasteners | Metal Clamp Lock for Iron Sheet Plate

5.0

$24.99

M8 M10 M12 Flange Bolts | 10.9 Grade Alloy Steel | Hexagon Head Non-Serrated

5.0

$7.99

Drywall Expansion Anchors | Self-Drilling Self-Tapping Screws | Plasterboard Fixing Fasteners

5.0

$27.95

304 Stainless Steel Hose Clamp Set | 25-Piece Assortment | 7-21mm Stepless Adjustment for Secure Sealing

5.0

$11.99

Self-Tapping Screw Expansion Bolt Kit | For Hollow Walls, Tile & Drywall | 10-500 Set Pipe Plug Anchors

5.0

$34.99

Explore the range

Popular in Tools & Hardware

Browse Tools & Hardware

Digital Vernier Caliper | 0-150mm Measuring Tool | Plastic Body

4.9

$6.95

Desoldering Braid | Solder Remover Wick | 2.0mm & 3.5mm x 1.5M

4.9

$5.95

USB-C Endoscope Camera | 5.5mm Lens for Android & PC | Flexible Inspection Borescope with 6 LEDs

4.9

$10.99

Sander Sanding Discs | 125mm 8-Hole Pattern | For Wood & Metal Grinding

4.9(10.2K)

$3.49

Tool Set 4pc | Tile Grout & Sealant Remover | For Shower, Kitchen & Bathroom Cleaning

4.9

$17.99

1-Inch Rotary Tool Sanding Sheets | 100pc Disc Set | For Dremel Tools

4.9(2.7K)

$7.95

10pcs M35 Cobalt Drill Bits Set | For Stainless Steel & Metal | 1-3mm High-Speed Steel

4.9

$15.99

Nickel Strip for 18650 Battery Spot Welding | 10m x 0.15mm Roll | High-Conductivity Connector

4.9

$5.95

Powerful LED Head Torch | Motion Sensor & Rechargeable | COB High Power Fishing

4.9(5.2K)

$11.99

Polishing Compound | Nano Crystal Wax | Hydrophobic Scratch Repair

4.9(1.7K)

$7.95

-27%

Safety Work Shoes for Men | Anti-Impact & Puncture-Resistant | Professional-Grade Athletic Design

4.7

$60.99$83.73

Laser Level | 2-Line Green Cross-Line | 360° Self-Leveling for Horizontal & Vertical Alignment

4.7

$59.99

Complete the set

Accessories & add-ons

Diamond Drill Bit Set | 18-68mm Hole Saw for Tile, Glass & Stone

5.0

$26.95

Woodworking Spade Drill Bit Set | 10-55mm High-Carbon Steel | Durable Flat Wood Boring Tools

5.0

$12.99

Forstner Drill Bit Set | 14-100mm Self-Centering Wood Boring Kit | Carbide-Tipped Precision

5.0

$5.95

Diamond Core Drill Bit | M14 Thread for Granite, Marble & Tile | Dry Vacuum Brazed Masonry Hole Saw

5.0

$35.95

Table Saw Blade Guard | 4-10 Inch Acrylic Protection Cover for Woodworking Safety

5.0

$83.99

Sanding Belts | P60-P3000 Abrasive | 330x10mm, 457x13mm, 492x6mm

5.0(16)

$19.99

30x 9x533mm Sanding Belts | Aluminium Oxide Abrasive | P36-P600 Grit Assortment

5.0(21)

$38.95

-21%

Diamond Drill Bit Set | 6-Piece M14 Thread | For Porcelain, Granite & Marble

5.0

$95.99$121.65

Paint Spray Gun Kit | 1.3mm Nozzle & 600cc Cup | Easy to Use for Cars, Walls & Home Projects

5.0

$299.99

The Tighten Nut Plum is a versatile, hand-operated clamping knob designed for secure fastening without tools. Featuring a star-shaped mechanical thread and a black thumb-friendly design, it provides excellent grip and torque for repeated manual adjustments in machinery, fixtures, and assemblies. Features and Benefits - Star-shaped knurled handle - Ensures a superior, non-slip grip for maximum tightening force and control, even with oily hands. - Durable black oxide or similar finish - Provides corrosion resistance and a professional appearance for long-term use in workshops. - Multiple thread size availability (M4 to M12) - Offers broad compatibility for various projects, eliminating the need for multiple specialized fasteners. - Hand-tighten design - Enables quick installation, adjustment, and removal without tools, saving time and increasing efficiency on the production line or in DIY projects. Applications - Securing panels and access doors on industrial machinery and enclosures. - Adjusting fixtures, jigs, and clamps in woodworking and metalworking shops. - Use in 3D printers, CNC machines, and other hobbyist or prototyping equipment for modular component fastening.

Thread Sizes: M4, M5, M6, M8, M10, M12. Package Weight: 50g (varies by size). Material: Steel. Finish: Black Oxide. Head Style: Star / Plum. Operation: Hand Tighten. Package Quantity: 1-10 pieces. Product Type: Thumb Nut / Knob Nut. Height: Approx. 15-40mm (varies by thread size). Outer Diameter: Approx. 20-60mm (varies by thread size). Thread Sizes: M4, M5, M6, M8, M10, M12. Weight Range: 5-50g (varies by size). Material: Steel with black oxide finish. Temperature Range: -20°C to +120°C. Application: Clamping, fixturing, adjustment mechanisms. Drive Type: Thumb/star wheel manual operation. Installation Torque: Hand-tighten only, max 2-5 Nm. Surface Finish: Black oxide coating for corrosion resistance. Thread Engagement: Minimum 1.5x thread diameter recommended. Thread Pitch: Standard metric coarse pitch per ISO 261. Thread Tolerance: 6g per ISO 965-1. Q: What thread sizes are available for these thumb nuts? A: These hand tighten nuts are available in M4, M5, M6, M8, M10, and M12 thread sizes. They are designed for manual clamping applications where tools are not preferred.. Q: What is the build quality and material of these clamping knobs? A: The knobs are constructed from durable steel with a black finish, featuring a star-shaped mechanical design for improved grip. They are machined for consistent threading and reliable clamping force.. Q: Are these thumb nuts compatible with standard metric bolts? A: Yes, these nuts are designed to be fully compatible with standard metric bolts and threaded rods in the specified M4 through M12 sizes. They are suitable for various mechanical and fabrication projects.. Q: Is there any warranty or guarantee provided with these nuts? A: The product is backed by a standard manufacturer's warranty against material and workmanship defects. Specific warranty duration and terms should be verified with the seller at the time of purchase.. Q: Do these hand tighten nuts offer good value for the price? A: These nuts provide good value for users needing tool-free fastening solutions, offering a convenient alternative to traditional hex nuts. The multi-size availability in one product listing adds to their utility..

Thumb Screws & Knobs | M4 M5 M6 M8 M10 M12 Star Hand Tighten Nuts | Manual Clamping Hardware

Questions about this product

Compare fasteners

More Fasteners

50pc Plasterboard Fixings Kit | Heavy-Duty Self-Drilling | Gypsum Board Wall Plugs

Hex Socket Cap Screws | A2-70 304 Stainless Steel | M2 M3 M4 M5 M6 M8 Bolt Assortment

Socket Insert Nuts | Zinc Alloy for Wood | M4-M10 Threaded Fastener Kit

M4-M12 Flange Screws | A2-304 Stainless Steel | 10-Piece with Serrated Lock Washers

Grub Screws | M2-M8 Black Carbon Steel & 304 Stainless Steel | Hexagon Allen Head Cone Point

Bearing Screws | M3-M6 304 Stainless Steel Hex Socket Cap Bolts | 10pcs/lot High Tensile

Steel Furniture Screw & Nut Sets | M4-M8 Large Flat Hex | Rivet Connector Joint Kits

Shape Rivet Nuts | M4 M5 M6 Panel Fasteners | Metal Clamp Lock for Iron Sheet Plate

M8 M10 M12 Flange Bolts | 10.9 Grade Alloy Steel | Hexagon Head Non-Serrated

Drywall Expansion Anchors | Self-Drilling Self-Tapping Screws | Plasterboard Fixing Fasteners

304 Stainless Steel Hose Clamp Set | 25-Piece Assortment | 7-21mm Stepless Adjustment for Secure Sealing

Self-Tapping Screw Expansion Bolt Kit | For Hollow Walls, Tile & Drywall | 10-500 Set Pipe Plug Anchors

Popular in Tools & Hardware

Digital Vernier Caliper | 0-150mm Measuring Tool | Plastic Body

Desoldering Braid | Solder Remover Wick | 2.0mm & 3.5mm x 1.5M

USB-C Endoscope Camera | 5.5mm Lens for Android & PC | Flexible Inspection Borescope with 6 LEDs

Sander Sanding Discs | 125mm 8-Hole Pattern | For Wood & Metal Grinding

Tool Set 4pc | Tile Grout & Sealant Remover | For Shower, Kitchen & Bathroom Cleaning

1-Inch Rotary Tool Sanding Sheets | 100pc Disc Set | For Dremel Tools

10pcs M35 Cobalt Drill Bits Set | For Stainless Steel & Metal | 1-3mm High-Speed Steel

Nickel Strip for 18650 Battery Spot Welding | 10m x 0.15mm Roll | High-Conductivity Connector

Powerful LED Head Torch | Motion Sensor & Rechargeable | COB High Power Fishing

Polishing Compound | Nano Crystal Wax | Hydrophobic Scratch Repair

Safety Work Shoes for Men | Anti-Impact & Puncture-Resistant | Professional-Grade Athletic Design

Laser Level | 2-Line Green Cross-Line | 360° Self-Leveling for Horizontal & Vertical Alignment

Accessories & add-ons

Diamond Drill Bit Set | 18-68mm Hole Saw for Tile, Glass & Stone

Woodworking Spade Drill Bit Set | 10-55mm High-Carbon Steel | Durable Flat Wood Boring Tools

Forstner Drill Bit Set | 14-100mm Self-Centering Wood Boring Kit | Carbide-Tipped Precision

Diamond Core Drill Bit | M14 Thread for Granite, Marble & Tile | Dry Vacuum Brazed Masonry Hole Saw

Air Blow Gun | Heavy-Duty Pneumatic Tool for Engine & Workshop Cleaning

Diamond Drill Bit Set | 8-Piece for Tile, Glass & Stone | 6-45mm Hole Saws

TCT Trimming Router Bit | 1/2 Shank 3 Flute | For Plywood, MDF & Chipboard

Table Saw Blade Guard | 4-10 Inch Acrylic Protection Cover for Woodworking Safety

Sanding Belts | P60-P3000 Abrasive | 330x10mm, 457x13mm, 492x6mm

30x 9x533mm Sanding Belts | Aluminium Oxide Abrasive | P36-P600 Grit Assortment

Diamond Drill Bit Set | 6-Piece M14 Thread | For Porcelain, Granite & Marble

Paint Spray Gun Kit | 1.3mm Nozzle & 600cc Cup | Easy to Use for Cars, Walls & Home Projects