Product: DIN 934 Hexagon Nut M22 * 2.5 (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.
- Fast Delievery
- Quality Assurance
- 24/7 Customer Service
Product Introduction
The M22 coarse nut completes the range. Still class 12, 35CrMoA, 55 µm hot-dip galvanized, with threads taken to 6AZ/6AX after coating. The hex measures 34 mm across flats, height up to 18.7 mm, and the absolute proof load now puts it in the territory where it often replaces bolted flange designs that would otherwise need a stud and two smaller nuts.
Functions and Purposes
M22 is not an everyday nut; it tends to show up on critical joints that are almost never disassembled during the machine's working life. Typical places are the ring-gear attachments of large ball mills and rotary kilns, the lower slew bearing of bucket-wheel reclaimers, and the pedestal anchors of offshore pedestal cranes. The coarse thread here acts as an insurance policy: if the joint ever needs to be cracked open after ten years of salt spray, a coarse M22 will move where a fine thread would have seized solid. In heavy port structures - link bridges, mooring bollard fixings, and fender panels – designers specify M22 HDG because the single nut can absorb ship impact energy without the zinc layer fracturing at the thread root. Fabricators like the fact that the 34 mm hex accepts the same heavy socket as common metric wheel nuts, simplifying tooling on remote sites. The final practical point is inventory: many mining and marine operators have standardised on M22 class 12 HDG for their largest bolted connections, so a single nut type serves the slewing ring, the travelling wheel axles, and the main structural splices, cutting down on mis-matches and store‑room clutter.
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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