Material Blackened alloy steel, high tensile 12.9 (Hardness 38 HRC, tensile strength 1200 N/mm²) Technical Notes ISO 7379. Image is for illustrative purposes only. M5 Thread, 6mm Shoulder Socket Cap Screw/ Bolts, High Tensile, Grade 12.9, DIN 9841, BS 4168, ISO 7379.
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