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Customize various types of screws, nails. All kinds of metal products.
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he dimensions of hexagonal composite washers include the thread specification, length, washer size, etc. Here are some common size information:
Thread specification: Common ones include M3, M4, M5, M6, M8, etc.
Length: The length range is wide. For example, the length of M3 could be 8mm, 10mm, etc., M4 could be 10mm, 12mm, etc., M5 could be 12mm, 16mm, etc., and the overall length is between 5-90mm.
Washer size: The thickness and outer diameter of the flat washer vary depending on the thread specification. For example, the thickness of the flat washer for M3 is 0.5mm and the outer diameter is 7mm; for M4, the thickness is 0.8mm and the outer diameter is 9mm; for M5, the thickness is 1.0mm and the outer diameter is 10mm; for M6, the thickness is 1.6mm and the outer diameter is 12mm; for M8, the thickness is 1.6mm and the outer diameter is 16mm.
Head size: Taking the common external hexagonal combination screws as an example, the head-to-edge size of M4 combination bolts is 6.78mm, M5 combination bolts is 8.75mm, M6 combination bolts is 10.71mm, and M8 combination bolts is 13.64mm.
In addition, there are some other specifications of hexagonal composite washers, such as national standard composite washers with external hexagonal drill tail screws, with specifications like M4.625 (composite washer 16, 19, 25) and M5.025 (composite washer 25). If you need more detailed and accurate size information, please contact the customer service.
Thank you.

