TA-VIGOR 5pcs M4x20mm Knurled Thumb Screws Bolts, 304 Stainless Steel Flat Head Knurled Thumbscrew with Shoulder Grip Knob Fasteners for Home, Server Panels, 3D Printers, Machinery & DIY

• 【Size&Package】Thread Size: M4 x 20mm / M4 x 0.79"(D*L); Thread Pitch: 0.7mm; Head Size: 12 x 8mm / 0.47" x 0.31"(D*T); Package includes 5pcs knurled thumb screws.
• 【Premium 304 Stainless Steel】Crafted with corrosion-resistant 304 stainless steel, these flat knurled head screws are not easy to rust and tarnishing, ensuring a long service life in both indoor and outdoor works.
• 【Maximum Grip With Deep Knurling】The wide, flat shoulder head features knurling design, providing a secure, non-slip grip even with wet, oily, or gloved hands. Apply more torque and never fumble with a slipping screw. The larger the diameter of the thumb portion, the greater the clamping force that can be applied.
• 【Tool-Free Installation】These thumb screws are tightened and loosened entirely by hand, perfect for quick access panels, frequent adjustments, or working in tight spaces. Eeffortless fastening and removal in seconds.
• 【Versatile Applications】The knurled head thumb screws are widely used in machinery, industry, home and DIY projects. Your good choice for securing server rack panels, assembling and modifying 3D printers, tightening furniture joints, mounting sensor housings, and countless other DIY and repair projects.

TA-VIGOR M4x20mm Knurled Thumb Screws, 5pcs 304 Stainless Steel Flat Knurled Head Thumb Screws Bolts with Shoulder Grip Knobs Fasteners