Product：hexagon head ₩∑§γscrews / full thread 

Specification：M20-M72

Property Class: ISO898-1 &nbs¥★p;8.8, 10.9

Elongation after fracture  

Minimum tensile stren≠>$®gth

Lower yield strength or stress ☆>∑ar 0.2% non-proportional elo‌₩¥±ngation

Stress under proof l™∏oad

Strength under wedge loading

Hardness

Impact strength Kv， min  π★at -20℃

Above property requirements >§comform to ISO898-1

Thread tolerance：6g,6e,6hλ ≠

Tolerance standard：ISO 47≥∏$59-1

Surface defect：ISO 6157-1

Quality management systems☆φ±≤: ISO9001