Custom Dacromet Coated Automotive Bolts
This project involves the manufacturing of custom steel bolts with Dacromet coating supplied for automotive applications. The bolts are produced in different diameters according to client drawings and technical specifications.
Dacromet coating provides excellent corrosion resistance and is widely used in automotive fasteners exposed to harsh environmental conditions such as moisture, salt, and road debris.
These custom bolts are designed to provide reliable fastening performance and long service life in vehicle assemblies. Strict dimensional control ensures compatibility with automotive installation requirements.
Yutung Industrial provides customized manufacturing solutions for automotive fasteners and coated metal components based on customer drawings and application requirements.
Product Pictures
Process
The automotive bolts were manufactured from 4140 alloy steel through cold forging, CNC machining, logo stamping, heat treatment, and Dacromet coating.
The production process required control of the bolt profile, overall length, machined dimensions, stamped identification, hardness, and coating appearance according to the customer’s approved drawings.
For custom bolts, pins, shafts, fasteners, and other steel components requiring forging, CNC machining, marking, heat treatment, coating, and dimensional inspection, explore our custom precision metal parts manufacturing capabilities.
Size
The lengths are 80mm, 89mm, 103mm and 119mm, total four specifications.
Material
Alloy Steel 4140
Heat treatment
38-44HRC
Surface
The bolts received a Dacromet coating using an NOF Metal Coatings system. The coating process was selected according to the customer’s confirmed corrosion-resistance and surface-quality requirements.
Batch Code
This is a repeat-order product, and a different batch code is applied to each production batch for identification and traceability.
For the batch shown in the photo, “W” represented the year 2023 and “G” represented September according to the confirmed coding system.
Packing
Each bolt body was protected with plastic mesh to reduce surface contact and coating damage during packing and transportation.
Custom Automotive Fasteners and Coated Components
This repeat-order project required coordination between alloy steel material control, cold forging, machining, marking, heat treatment, coating, batch identification, and protective packing.
For OEM projects involving custom fasteners together with nuts, washers, pins, machined components, coatings, heat treatment, purchased hardware, or assembled industrial parts, explore our broader custom industrial parts manufacturing capabilities.
See another project: Dacromet Coated Dome Bolts
