25Pcs M4 x 20mm Threaded Knurled Thumb Screws, Round Head Knobs for Clamping and Adjustments, Machinery, Equipment, DIY Projects

★★★★★ 4.5 31 reviews

US$3.04
Price when purchased online
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US$3.04
Price when purchased online
Free shipping Free 30-day returns

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Product details

Management number 250220882 Release Date 2026/09/17 List Price US$3.04 Model Number 250220882
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Product Description: Features: These threaded thumb screws feature a knurled surface for improved grip and precision threading, ensuring secure and stable fastening. The round plastic head provides a smooth, ergonomic grip, allowing for effortless tightening and adjustments during frequent use. Ideal for clamping, fastening, and adjustments in machinery, tools, equipment, and DIY projects, meeting both professional and hobbyist needs. Designed for convenience, these thumb screws allow for easy, tool-free installation and quick adjustments, saving time on repetitive tasks. Product Specifications: Material: Carbon Steel, Plastic Color: Black Size: Thread Size: M4, thread length: 20mm/0.79inch Package contains: 25Pcs M4 x 20mm Threaded Knurled Thumb Screws NOTE: Please allow 1-2mm difference between actual and manual due to manual measurement. The color you actually see may be slightly different due to different displays.

  • Package Including: You will receive 25Pcs M4 x 20mm Threaded Knurled Thumb Screws. Knurled clamping knobs size: Thread Size: M4, thread length: 20mm/0.79inch; head diameter: 14mm/0.55inch, total length: 31mm/1.22inch.
  • High-quality Threaded Knurled Design: These thumb screws feature a knurled surface for a firm grip and precision threading, ensuring reliable and secure fastening for clamping and adjustments in various applications.
  • Ergonomic Round Plastic Head: The black round head is crafted from premium plastic, offering a comfortable grip and smooth handling, ideal for frequent use in machinery and DIY projects.
  • Rust-Free and Long-Lasting Performance: Engineered for durability, these thumb screws resist wear and tear, providing consistent performance in industrial, equipment, and home use without rusting issues.
  • Easy to Install and Adjust: These hand knobs offer tool-free installation and quick adjustments, making them perfect for situations requiring frequent re-tightening or repositioning.
ASIN B0FN71J8N9
Brand Virello
Color Black
Set Name Virello 25Pcs M4 x 20mm Knurled Thumb Screw Set
Head Type Round
Size Name M4 x 20mm
Metal Type Carbon Steel
Unit Count 1 Count
Part Number S0066
Thread Size M4
Thread Type Metric
Drive System Thumb
Manufacturer Virello
Thread Class standard
Fastener Size M4 x 20mm
Fastener Type Machine Screw
Item Diameter 14 millimeters
Material Type Carbon Steel, Plastic
Number Of Items 25
Thread Coverage Fully Threaded
Number of Pieces 25
Outside Diameter 14 millimeters
Screw Head Style Round
Set Screw Thread Type M
Compatible Groove Diameter 4 millimeters

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31 ratings | 13 reviews
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