Bolt's heads are available in such as circle-inner-tooth, circle-exter-tooth, and hexagon. Bolt's materials are available in carbon-steel, stainless-steel, bronze and aluminum. Thread (fine/coarse thread) available in the Metric system is M2 – M8, in the British system is 1/8” – 5/16” and in the US system is #2 - #10. |
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