knurled thumb nuts,knurled screw, 5-10pcs/lot M3 M4 M5 M6*6/8/10/12/16/20 Colourful Aluminum Knurled Hand Tighten Thumb Screw (Color : Black, Size : 20MM_M4 10PCS) ( Color : Black , Size : 6MM-M3 10PC

M3 M4 M5 M6*6/8/10/12/16 colourful aluminum knurled hand tighten thumb screw

• Reasonable Design：Accurate and neat thread design provides superior holding power and preventing the insert nuts from either turning or pulling out in all applications. Round and Flat head is super smooth without any burr.
• Thumb screws Made of 304 stainless steel +aluminum alloy with excellent and extending the long service time. High strength for your long time use, hard to deform or break. They are also applied in wet environment because of excellent performance of .
• Perfect for PC case, power supply, motherboard, hard drives, fan and floppy/CD-ROM/DVD-ROM drives fixed installation
• NO TOOLS REQUIRED - Convenient to use, easy to install without need any tools, twist by hand directly to install or disassembly.
• 【Wide Range of Applications】---- Hand-made thumbscrews are suitable for mechanical equipment, tools, automobiles, instrumentation, industrial equipment, household appliances, furniture manufacturing, and testing equipment, where screws need to be loosened frequently.