M3M4M5M6M8M10 High Knurled Thumb Screws Zinc-plated Steel Hand Grip Knob Bolts Product Description: Model:Thumb Screws Hand Grip Knob Bolts Material: Carbon steel Brand: Fastener Thread diameter：M3 M4 M5 M6 M8 M10 Size: the specification is composed of dL, for example, M4 * 20 (thread diameter 4mm 'thread length 20mm) does not include the head size. Head type: cylindrical head Standard: GB Surface treatment:Zinc-Plated Uses: computer case / sports equipment / electronic appliances adjustment
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