Hot-dip Galvanized Self-locking Bolts and Nuts
- Material Grade: 45 Steel, 40Cr, A173, H7, A3Steel, SS304, SS301S, SS316L, etc.
- Grade: 4.8, 6.8, 8.8, 10.9, 12.9
- Specification: M10, M12, M14, M16, M20, M22, M24, M27, M30, M33, M36, M42, M48, M52, M56, M60, M64, M68, M72, M76, M80, etc.
- Bolt-head Shape: Oval Head, Square Head, U-shaped bolt, etc.
- Application: Steel Frame Connections, Column Connections and Brake Systems
Hot Dip Galvanized Self-locking Bolts and Nuts Chemical Composition:
Our Photos for Hot Dip Galvanized Self-locking Bolts and Nuts :
- Hot dip galvanizing (HDG) is also a common surface coating for steel fasteners. It provides a very solid and durable corrosion protection.
- The process of hot dip galvanizing is quite simple: the fasteners are dipped in a bath of molten zinc with normal temperatures around 455°C to 480°C and high temperatures between 530°C and 560°C).
- Next, the fasteners are spun to remove the excess zinc, and then they are cooled in water to solidify the zinc.
- What remains is a layer of zinc (40 to 70 microns) on the surface of the products that is relatively thick compared to zinc electroplating (3 to 20 microns).
- Nuts are processed in the same way, except the nut thread is not yet formed. Nut threads must always be tapped after HDG.
- The HDG process is commonly regarded as suitable for fasteners with diameters M8 or larger.
- 13 Year Experience in Heat-resistant Steel Field
- 18 Year Expertise in Wear-resistant Material Field
- 20 Year Customer-made High Quality Castings & Forgings
- The nearest seaport: Shanghai port
- The nearest airport: Shanghai Pudong airport
- Payment Terms:L/C,TT,West Union,Paypal
- Payment Condition:50% before production, 50% before delivery against complete set of inspection report
- Supply Capability: 10,000 tons per year
- Sample Availability: yes
- Sample Time:15-30 Days
- Packing: Plywood Cases or Steel Crates
- Delivery time: 45 working days per 20 tons regular castings & forgings
- Service: OEM, ODM or Customized
- 20-year Foundry Operation Experience.
- Friendly & High Efficient Technical & Commercial Communication
- Professional Export Practices: Exported to +60 Overseas Countries.