Fittings / Studs / Bolts . Grease Fittings. Metric Grease Fittings; Studs. DIN 939-5.8 Metric Studs; Bolts and Screws. DIN 603 Carriage Bolts ; DIN 479-8.8 Square Head Set Screw Bare Steel; Close; . Mechanical Properties for Socket Products. DIN 912 Socket Cap Screws. Property Class 12.9; Hardness (HRC) 39-44: Tensile Strength (Mpa) 1,220 min. Steel Bolts - Metric Grades Steel Bolts - SAE Grades For metric bolts strength is according ISO 898 Mechanical properties of fasteners made of carbon steel and alloy steel described by property classes with designations 4.6, 4.8, 5.8, 8.8, 9.8, 10.9 and 12.9. For example, M10 or M10 -6g, by default, specifies M10 x 1.5. The standard metric fastener thread series for general hereponents is the M thread profile and the coarse pitch thread series.

Technical Reference Guide Table of Contents Subject Page # Fastener Material Selection 1 . Structural Bolts 28 Standards 30 Metric heremon Specifications for Use with Fasteners 33 . strength properties “step down” as the diameters increase. The metric system designates strength capabilities via property classes rather than grades. The numbering system is very simple; the number that appears before the decimal, when multiplied by 100, will provide the approximate minimum tensile strength of the bolt . Minimum Tensile Stress Hex Bolts HEX BOLTS - MINIMUM TENSILE STRESS (MPa or N/mm) Nominal Pitch Stress Area Class Class AS1252 Class Size mm mm 4.6 8.8 10.9 M3 0.50 5.03 400 800 - 1040 M4 0.70 8.78 400 800 - 1040 M5 0.80 14.20 400 800 - 1040 M6 1.00 20.10 400 800 - 1040 M8 1.25 36.60 400 800 - 1040 M10 1.50 58.00 400 800 - 1040

- Higher property class nuts may replace lower property class nuts in bolt - nut assembly. - For metric thin nuts, property class of thin nuts is designated as 04 and 05. Thin nuts (style 0) have a herepared to regular nuts or high nuts, and are not … Metric bolt grades and strength calculator was developed to show proof strength, tensile strength, Vickers / Brinell hardness, minimum breaking torque and stress area of metric bolts and screws made of carbon steel and alloy steel. Mechanical properties of grade 4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 9.8, 10.9 and 12.