BSI BS EN 3529 Aerospace series - Steel FE-PM2701 (X2NiCoMo18-8-5) - Vacuum induction melted and vacuum arc remelted - Solution treated and precipitation treated - Forgings - a or D less than or equal to 150 mm - 1 750 MPa less than or equal to Rm less th
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![BSI BS 2A 230 Specification for 100 Degree Countersunk Head Steel Bolts [1100 MPa with Hi-torque speed drive recesses] - AMD 2130: October 29, 1976; AMD 6151: May 31, 1990](/bitrix/templates/amt_v3_ozer_n/images/img-1.jpg)