Packaging: Each pack contains 100 M6-11x5 Round Spacer Washers (Ø11mm D5mm). Offers a variety of sizes to precisely fit different application scenarios. M4: 7×3/5/8/10/12 M6: 11×3/5/8/10/12/15/18/20/25 M8: 14×3/5/8/10/12/15/18/20/25 The plastic spacers fit M4/M6/M8 screws and protect PCBs. ABS Round Spacer Washers: These nylon washers offer excellent insulating properties and are suitable for extreme temperatures from -40°C to 120°C. The ABS plastic washer increases the contact surface, prevents screw deformation and corrosion, and reduces the risk of short circuits. Resistant to oil and chemicals, they extend their lifespan. Spacer washers ensure long-term stability in outdoor environments. Precise Sealing Design: Round spacer washers have high sealing force to prevent screw loosening/leakage, boosting structural stability. The plastic spacer design absorbs mechanical stress and protects circuit boards/printers from corrosion/wear. Round spacer washers block electrochemical corrosion of metal parts, significantly extending equipment life. Easy Installation: Plastic washers feature a smooth, burr-free surface, effectively preventing damage to electrical components during installation and disassembly. Their threadless design allows direct screw insertion, making installation and disassembly quick and easy. Plastic spacer washers are ideal for maintenance and repairs, and easy seal adjustment ensures the proper operation of your equipment. Versatile Insulating Sleeves: Plastic spacers are used in various industries. Electronics: PCB screw insulation, box short-circuit protection, cabinet sealing Automotive: Motor wiring, sensor sealing Mechanical: Bearing rustproofing, gearbox sealing, hydraulic damping Exterior: Solar support, LED lamp sealing. Round spacer washers Round optimal protection for stability & equipment lifespan.