Products - Hex Socket Screw - Socket CounterSunk Head Screw

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Mechanical Properties

Standards: DIN 7991, IS 6761, BS 4168

Diameter: 3mm to 24mm , 1/4" to 1"

Length: 5mm to 150mm, 3 /8" to 4"

Grades: 8.8, 10.9, 12.9, A2, A4

Finish: Black, Zinc Blue, Hot dip, Decromate, Yellow Passivation

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Property Class Designation Nominal Size of Product Material and Treatment Proof Load Stress MPa Tensile Yield Strength, MPa, Min. Tensile Ultimate Strength, MPa, Min. Surface, Max Prod. Hardness, Rockwell Core
Min. Max.
Property Class Indent Marking
Metric-Hex. Socket Flat Head Cap Screws (ISO 898-1 - 10642)
12.9 M1.6 - M100 alloy steel, quenched and tempered 970 1100 1220 30N63 C38 C44 12.9
10.9 M5 - M20 medium carbon steel, quenched and tempered 830 940 1040 30N59 C33 C39 10.9
8.8 M16-M72 medium carbon steel, quenched and tempered 600 660 830 30N56 C23 C34 8.8