Product: DIN 934 Hexagon Nut M16 * 2.0 (Coarse Thread)
Product: Hexagonal Nuts
Standard: DIN934 property class 12
Raw material: made from quenched and tempered 35CrMoA alloy steel.
Surface: hot-dip galvanized to an average 55 µm coating thickness.
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Product Introduction
DIN 934 M16 * 2.0
coarse hex nut, property class 12,
The 2.0 mm pitch speeds up assembly, and the larger body - 24 mm across flats, 14.8 mm height - generates significantly higher clamp force. Proof load stress is still 1200 MPa, but the larger tensile stress area raises the absolute proof load well above M12 capability. Post-coating thread tolerance is 6AZ/6AX; dehydrogenation is a non-negotiable process step.
Functions and Purposes
M12 suits secondary joints, M16 takes the primary load paths. You see it in main steel frame nodes, crusher housing bolting, excavator slew ring attachments, and port crane pedestals. In wind towers, M16 appears not on small brackets but on platform main beams and heavy cable tray girders. The nut's capacity often allows a single M16 to replace two or three M12 fasteners, which simplifies joint layout and reduces the number of holes in thick plate. During erection, the coarse thread resists galling under the high torque of impact wrenches and forgives the minor misalignments common in heavy fabrication. Field practice shows that assembling M16 HDG nuts with a dab of anti-seize paste or using direct tension indicators gives more accurate preload when bolts are tightened with power tools. The 55 µm zinc layer ensures the nut does not become the weak link for corrosion, even in ports where salt spray is constant. Maintenance intervals can be stretched because the joint stays tight and rust-free. When downtime costs are high - continuous mining machinery, offshore gangways, 24/7 container handling - the M16 class 12 hot-dip nut pays back quickly by avoiding unplanned stoppages. For designers, specifying M16 class 12 HDG from the outset often eliminates the need for secondary locking devices, saving both part count and assembly step
Core Hardness Parameters
Classified by property class as follows：
Main Sales Markets of the Product:Europe, the Middle East and Southeast Asia
Certification and Warranty
We are certified by ISO9001:2015, IATF16949:2016, and other international quality standard certifications.
Long-term quality warranty and comprehensive after-sales service are provided.
Established in 2005, our company has evolved over two decades of continuous development into a leading regional enterprise in the fastener industry with fully automated end-to-end production. With an annual output value exceeding RMB 130 million, our product range covers diverse market segments from mid-range to high-end and is distributed worldwide
Our factory & quipment
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