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Home / Screws / Bakelite Seven-Star 304 Stainless Steel Star Handle Screws, Star-Shaped Knob Bolts, Hand-Tightening Knobs M4-M12

Attributes

Brand -
Category Standard Parts, Components & Industrial Consumables / Screws
Origin -
Material 304 Stainless Steel and Bakelite
Head Style Seven-Star Knob
Drive Type Hand-Tightening (No Tool Required)
Thread Sizes Available M4, M5, M6, M8, M10, M12
Finish Polished Metal with Matte Black Handle
Corrosion Resistance High (Suitable for Humid Environments)
Temperature Resistance Up to 120°C (Bakelite Handle)
Application Jigs, Fixtures, Machinery Covers, Adjustable Stops
Package Contents 10 Pieces per Pack
Country of Origin China

6 reviews

A

Anonymous

Mar 27, 2026

Rating: 5/5

Perfect for my CNC jig setup

These star knobs are exactly what I needed for my workshop fixtures. The grip is excellent, and the stainless steel shaft feels very durable. Hand-tightening is smooth without stripping.

A

Anonymous

Mar 26, 2026

Rating: 4/5

Great grip, fast shipping

The star shape makes it very easy to tighten even with gloves on. Arrived quickly and well-packaged. One knob had a minor cosmetic scratch, but it doesn't affect function.

A

Anonymous

Mar 20, 2026

Rating: 5/5

Sturdy and reliable

I use these for adjusting camera mounts. The stainless steel doesn't rust, which is crucial for my outdoor shoots. The sizing was accurate to the M6 specification I ordered.

A

Anonymous

Mar 19, 2026

Rating: 5/5

Excellent replacement parts

Replaced some broken plastic knobs on my drill press with these. The seven-star design provides much better torque than the old ones. Highly recommended for machinery.

A

Anonymous

Mar 15, 2026

Rating: 4/5

Good quality, slightly stiff at first

The build quality is solid. The bakelite handle feels premium. They were a bit stiff out of the box but loosened up after a few uses. Great value for the price.

A

Anonymous

Mar 12, 2026

Rating: 5/5

Best hand-tightening knobs I've bought

Very impressed with the weight and feel. The combination of metal and bakelite looks professional on my custom projects. Will definitely order more sizes.

5 FAQ

Q: Are these screws compatible with standard metric threads?

A: Yes, these knobs feature standard metric threading ranging from M4 to M12 as specified in the product options.

Q: Can the bakelite handle withstand high temperatures near a motor?

A: The bakelite material is heat resistant up to approximately 120°C. For applications exceeding this temperature, we recommend checking specific thermal requirements.

Q: Is the stainless steel grade 304 or 316?

A: The shaft and threaded portion are made from 304 Stainless Steel, which offers excellent corrosion resistance for most industrial and workshop environments.

Q: Do I need any tools to install these?

A: No tools are required. These are designed specifically for hand-tightening thanks to the seven-star knob shape.

Q: What is the length of the threaded shaft?

A: The thread length varies depending on the specific diameter (M4-M12) selected. Please refer to the detailed dimension chart in the product images or contact us for specific length requirements.

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