Knurled Thumb Screw Set 20 Pieces M3 X 12mm Black Steel Flat Head Grip Bolts Hand Tighten Fasteners For Lighting Fixtures Furniture Electronics And More Easy Manual Adjustment For Quick Maintenance

M3 Knurled Thumb Screws Set, 20pc Black Zinc Flat Head
✔️ 20-piece M3x12mm knurled screws, black zinc finish

These knurled thumb screws are a handy hand-tightening fastener set designed for quick maintenance on lighting fixtures, lampshades, furniture, electronics, and other equipment. They let you secure components without tools, ideal for on-the-spot adjustments and repairs.

✅ 20 pieces per pack
✅ M3 x 12 mm thread with 0.5 mm pitch
✅ Knurled flat-head design for hand tightening
✅ Black zinc plating for corrosion resistance
✅ Head diameter 11 mm; head thickness 3.7 mm

💡 What is a knurled thumb screw used for in quick hand-tightening applications? Handy fasteners for tool-free adjustments on fixtures, furniture, and electronics. They grip well in tight spaces and resist slipping, making maintenance quicker.

• Secure fixtures like lighting, furniture, and electronics without tools
• Fast setup and maintenance in tight spaces
• Non-slip knurled head improves grip in cramped areas
• Black zinc finish resists corrosion for longer life