螺丝扭力规格及标准.doc

螺絲扭力規格及标准螺絲扭力規格 螺絲直徑 硬度 螺絲扭力規格 螺絲直徑高硬度材質用扭力標準較低硬度材質用扭力標準M1.00.150 (kg x cm)0.120 (kg x cm)M1.10.220 (kg x cm)0.176 (kg x cm)M1.20.320 (kg x cm)0.256 (kg x cm)M1.40.480 (kg x cm)0.384 (kg x cm) M1.60.700 (kg x cm)0.560 (kg x cm)M1.81.100 (kg x cm)0.880 (kg x cm)M2.01.500 (kg x cm)1.200 (kg x cm)M2.22.000 (kg x cm)1.600 (kg x cm)M2.53.200 (kg x cm)2.560 (kg x cm)M3.06.000 (kg x cm)4.800 (kg x cm)M3.59.400 (kg x cm)7.520 (kg x cm)M4.014.000 (kg x cm)11.200 (kg x cm)M4.520.500 (kg x cm)16.400 (kg x cm)M5.029.000 (kg x cm)23.200 (kg x cm)M6.049.000 (kg x cm)39.200 (kg x cm)備註：1. 高硬度材質為鐵類材質 2. 較低硬度材質用扭力標準為非鐵類材質，如 ABS，M/B，FDD 塑膠框 依材質區分之螺絲扭力規格Mothersrew sizePlasticAluminumBrassLow Carbon SteelStainless SteelM21.0-1.11.3-1.41.8-2.02.0-2.22.3-2.4M2.62.6-2.62.8-3.24.0-4.54.5-5.05.0-5.5M33.1-3.43.9-4.25.5-6.06.0-6.66.6-7.3M47.6-8.39.5-10.413.5-14.915.0-16.516.7-18.3M511.2-12.213.9-15.319.8-21.822.0-24.224.2-26.9#2 - 561.2-1.31.5-1.62.1-2.32.3-2.52.6-2.9#4 - 402.5-2.73.1-3.44.5-5.04.9-5.45.4-6.0#6 - 324.4-4.95.5-6.18.3-9.19.1-10.010.0-11.0#8 - 329.0-9.911.3-12.417.2-18.618.5-20.520.6-22.8#10 - 3215.9-17.719.9-22.126.9-29.830.8-34.234.4-36.7Unit:Kgf-cmP.S)1. The material of screw is low carbon steel.2. The data as above is used in order to utilize the full strength of threades fasteners without damaging the threads. It should be used as a guid in tightening threaded fasteners.3. 美規螺絲a . #2-56 (0.086-56): 2 番56 牙 b #4-40 (0.112-40) : 4 番40 牙c. #6-32 (0.138-32) : 6 番32 牙d. #8-32 (0.164-32) : 8 番32 牙 e. #10-24 (0.190-24): 10 番24 牙20.1 Plastics LCD Monitercase screw : 粗牙 6 kgf-cm inner PCB 4 Kgf-cm speaker : 2 Kgf-cm螺丝扭力标准 (目前常用之螺丝扭力标准) A B C D EM3 8 8 6 10 12M3.5 10 8 6 M4 16 12 8 2022M530 20 12 M6 50 30 M8 120 70 M10240 140 M12420 260 单位：Kgf.cm;容许误差：10%A、 铁螺丝与铁螺帽（螺孔）之固定，如：*箱体各组件之组合。*接地螺丝、螺帽之固定。*PCB固定于箱体。B、铁螺丝、铜螺帽（螺孔及铝合金材料螺孔之螺定，如：*电晶体或线材端子固定于铝散热片上。*铝散热片固定于PCB上。*大电容或电晶体端子（TERMINAL）之固定螺丝。*RS-232六角铜柱之固定。C、铁螺丝（自攻）锁于塑胶孔。*塑胶面板固定于箱体。*PCB固定于塑胶面板上。D、铁螺丝（自攻）锁于板厚1.0之抽牙孔。*M3抽牙也为2.8(+0,-0.05)*M4抽牙孔为3.65(+0.05,-0)E、铁螺丝（自攻锁于板厚1.2之抽牙孔，抽牙孔尺寸同D项。