XZ Fastener | Coated Automotive Fasteners
dacromet wheel bolts supplier China
XZ Fastener supplies Dacromet wheel bolts from China for automotive wheels, trailers, axle assemblies, and heavy vehicle maintenance markets. Buyers can source metric wheel bolts according to drawing, sample, thread size, seat type, strength class, coating thickness, and packing requirement. Dacromet coating is often selected where improved corrosion resistance and reduced hydrogen embrittlement risk are needed compared with many electroplated finishes. Standard and custom wheel bolt options can be supplied upon request, including conical seat, ball seat, flange head, and drawing-based designs for export projects.
Quick Specs
What Buyers Should Know Before Sourcing Dacromet Wheel Bolts
Wheel bolts are safety-related fasteners, so procurement should confirm more than thread diameter and length. Seat geometry, head style, shank length, thread pitch, mechanical property class, coating thickness, torque behavior, and inspection method all affect assembly performance. XZ Fastener can help buyers compare standard fastener products with drawing-based wheel bolts when a project requires a specific vehicle platform or axle design.
Dacromet coating is a non-electrolytic zinc-aluminum flake finish. It is commonly selected for automotive and outdoor assemblies because it offers strong corrosion resistance with less hydrogen embrittlement concern than many electroplated processes. For wheel bolt sourcing, buyers should also confirm the required friction coefficient, salt spray expectation, thread fit after coating, and whether nuts or washers need the same coating system.
Key Sourcing Checks
- Confirm thread size such as M12, M14, M16, or drawing-specific dimensions.
- Specify seat type: conical, ball, flat seat, or special flange geometry.
- Match strength class to vehicle load and assembly requirement.
- Define coating thickness and corrosion test expectation before production.
- Check packing method for export handling, batch traceability, and warehouse use.
Common Purchasing Descriptions
International buyers may describe the same product in several ways, including Dacromet coated wheel bolts, zinc flake wheel bolts, automotive wheel bolts with Dacromet finish, high tensile wheel bolts, truck wheel bolts, hub bolts, or custom wheel bolts made to drawing. For related coated bolt purchasing, buyers may also combine orders with DIN 933 coated hex bolt items such as DIN 933 full thread hex bolts, Grade 8.8 carbon steel hex bolts, metric hex head bolts, zinc plated DIN 933 bolts, black oxide DIN 933 bolts, and hot dip galvanized DIN 933 bolts.
Detailed Specifications Table
| Item | Typical Options | Buyer Notes |
|---|---|---|
| Product Type | Dacromet wheel bolts, hub bolts, automotive wheel bolts, trailer wheel bolts | Send drawing or sample photo when head or seat geometry is non-standard. |
| Thread Size | M10, M12, M14, M16, M18, M20, and custom metric threads | Confirm pitch, thread length, tolerance, and usable thread after coating. |
| Seat Type | Conical seat, ball seat, flat seat, flange type, or special profile | Seat angle and radius must match the wheel or hub design. |
| Strength Class | 8.8, 10.9, 12.9, or project-specific requirement | Mechanical properties should follow the drawing, standard, or order requirement. |
| Material | Medium carbon steel, alloy steel, 35CrMo, 40Cr, or equivalent | Material can be selected according to strength, heat treatment, and cost target. |
| Surface Finish | Dacromet zinc-aluminum flake coating; other finishes available for comparison | State coating color, thickness, corrosion test expectation, and friction requirement. |
| Inspection | Dimensional check, thread gauge, hardness, tensile test, coating thickness, visual check | Inspection reports can be supplied according to order requirement. |
| Packing | Bulk carton, small box, pallet, label, barcode, or buyer-specified export packing | Provide carton weight limits and label format before quotation when needed. |
Material and Grade Explanation
Wheel bolts normally require controlled strength and toughness because they clamp the wheel to the hub under repeated vibration, braking force, and road impact. Carbon steel can be used for lower or moderate strength requirements, while alloy steel is often selected for higher tensile grades and heat-treated wheel bolt designs. Material selection should follow the required mechanical property class, service environment, and assembly torque.
For high tensile wheel bolts, heat treatment control is important. Buyers should define whether the order requires property class 8.8, 10.9, 12.9, or a drawing-specific target. XZ Fastener can supply material and grade options according to order requirement, while final selection should match the vehicle or axle design requirement.
Surface Finish Selection Guide
Dacromet is often selected for wheel bolts where corrosion resistance is more demanding than basic zinc plating. The coating forms a zinc-aluminum flake layer and does not rely on electrolytic deposition. Buyers comparing finishes can review XZ Fastener information on Dacromet coated fasteners and the corrosion resistance comparison for zinc, hot dip galvanized, stainless steel, and Dacromet options.
When a project has torque-tension control requirements, the coating should be discussed together with lubrication, friction coefficient, thread fit, and mating nut finish. Coating selection should also consider exposure to salt, moisture, temperature change, and storage conditions before assembly.
Manufacturing and Quality Control
Manufacturing Focus
- Raw material review according to grade and order requirement.
- Cold forming, hot forging, or machining route depending on bolt size and geometry.
- Thread rolling or machining with attention to pitch, tolerance, and coating allowance.
- Heat treatment for high tensile grades where required by the drawing or standard.
- Dacromet coating process arranged according to required coating performance.
Quality Control Items
- Dimensional checks for head, seat, shank, thread, and overall length.
- Go/no-go thread gauge inspection after coating.
- Hardness and mechanical property testing according to order requirement.
- Coating thickness, appearance, and corrosion test arrangement when specified.
- Export packing verification, label check, and batch identification.
For inspection planning, buyers can use the fastener quality inspection checklist before sending an RFQ.
Applications
Dacromet wheel bolts are commonly used in automotive wheel assemblies, trailers, agricultural machinery, commercial vehicles, axle assemblies, and replacement parts where corrosion resistance and reliable clamping are important. They are also suitable for buyers who need coordinated supply of bolts, nuts, washers, and other coated fastening parts for maintenance kits or vehicle production support.
Typical Markets
- Automotive aftermarket distributors
- Trailer and axle component suppliers
- Truck and heavy vehicle maintenance programs
- Machinery assembly and spare parts projects
Common Order Concerns
- Compatibility with wheel seat and hub design
- Corrosion resistance for outdoor storage and road exposure
- Consistent thread fit after coating
- Clear packing labels for warehouse identification
How to Get a Faster Quotation
To quote accurately, please provide size, drawing or sample photo, strength class, Dacromet coating requirement, order quantity, packing method, destination country, and inspection documents needed. If the part is used with a matching nut or wheel assembly, include mating part details so thread tolerance and coating compatibility can be reviewed. A complete RFQ helps XZ Fastener check feasibility, cost, and lead time more efficiently.
For direct purchasing support, send the project details through the XZ Fastener request a quote page.
FAQ
Can XZ Fastener supply Dacromet wheel bolts from China according to our drawing?
Yes. Dacromet wheel bolts can be supplied according to drawing, sample, or detailed specification. Please provide thread size, seat type, head dimensions, strength class, finish requirement, quantity, and packing details.
What information is needed to confirm a wheel bolt price?
A faster quotation usually needs size list, drawing or sample photo, material or grade, coating requirement, quantity, packaging, destination, and inspection requirements. For wheel bolts, seat type and thread pitch are especially important.
Is Dacromet suitable for high tensile wheel bolts?
Dacromet is often used on high tensile fasteners because it is a non-electrolytic zinc-aluminum flake coating. Final suitability depends on the grade, coating specification, friction requirement, and service environment.
Can the coating thickness and salt spray test be specified?
Yes. Coating thickness, corrosion test expectation, color tone, and related inspection requirements can be discussed before order confirmation. Requirements should be stated clearly in the RFQ or drawing notes.
Can Dacromet wheel bolts be packed for bulk wholesale orders?
Yes. Bulk carton, small box, pallet, label, barcode, and buyer-specific export packing can be arranged according to order requirement. Please provide carton weight limits and label format if required.
Can XZ Fastener supply matching nuts or other coated fasteners with wheel bolts?
Matching nuts, washers, hex bolts, threaded rods, and other coated fasteners can be discussed as part of one sourcing project. Mating finish and thread fit should be confirmed together when parts are assembled together.
Send Your Dacromet Wheel Bolt Inquiry
For a practical quotation, send your size list, drawing or sample photo, finish requirement, quantity, packaging method, and inspection requirements. XZ Fastener will review the details and respond with available supply options according to your order requirement.
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