Hexagon Socket Head Cap Screw
We supply premium quality hexagon socket head cap screws in a variety of dimensions and grades.
ISO 4762 Bumax 88
ISO 4762 Bumax 109
ISO 4762 Bumax SDX 109
BUMAX SDX 109 fasteners are made from premium quality 1.4410, UNS S32750 material.
BUMAX SDX 109 bolts of dimension M6 to M12 in strength class 10.9 are held in stock. Other dimensions and strength classes (up to 12.9) are produced on request.
For NORSOK inquiries, please contact your BUMAX sales representative.
ISO 4762 Bumax DX 129
Duplex Stainless Steel fasteners in strength class 12.9 are made from the duplex grade 1.4462, UNS S32205.
BUMAX® DX 129 is a duplex stainless steel fastener that combines strength, corrosion resistance and ductility for the most demanding applications.
Tensile strength: min 1,200 MPa
Yield strength: min 1,080 MPa
Elongation: Significantly better than 12.9 carbon steel and similar or better than A4/70. Elongation > 0.4x d.
Corrosion resistance: Significantly better than A4 (316L) (PRE >34 vs 25).
Availability: off the shelf in dimensions M6-M16 in hexagon socket head cap ISO 4762 in lengths according to the table below