colored zinc fasteners supplier China
XZ Fastener supplies colored zinc fasteners from China for importers, equipment manufacturers, construction distributors, and project buyers that need clear finish identification and stable corrosion protection for assembled hardware. Available items can include bolts, nuts, washers, screws, studs, anchors, and made-to-drawing parts in white zinc, blue zinc, yellow zinc, black zinc, or other agreed passivation colors. Orders can be supplied according to size list, material grade, coating requirement, packaging method, and inspection plan. For projects involving multiple fastener types, XZ Fastener helps buyers keep finish color, thread fit, packing marks, and shipment documents consistent across the purchase order.
Quick Specs
What Buyers Should Know Before Sourcing Colored Zinc Fasteners
Colored zinc fasteners are often selected when buyers need moderate corrosion protection, a clean appearance, and fast visual separation between different part types or batches. The color normally comes from passivation after electro zinc plating, so buyers should define both coating thickness and color requirement instead of asking only for “colored zinc.” For mixed hardware packages, review related fastener products early so bolt, nut, washer, and screw finishes can be matched before production.
When drawings require a special color tone, salt spray expectation, or RoHS-related restriction, it is better to state these details on the RFQ. XZ Fastener can also review custom fasteners when the part shape, recess, shoulder, thread length, or head marking is not covered by a standard item.
Typical Purchase Considerations
- Confirm whether the finish is blue zinc, yellow zinc, black zinc, white zinc, or another agreed color.
- Specify coating thickness and any corrosion test requirement available upon request.
- Check internal and external thread fit after plating, especially for fine threads and small screws.
- Define carton labels, mixed-size packing, pallet marks, and moisture protection.
- Send drawings or samples for non-standard head shape, drive, washer face, or assembled parts.
Common Purchasing Descriptions
Buyers may describe colored zinc fasteners in several ways depending on the application and regional purchasing habit. Common descriptions include colored zinc bolts and nuts, yellow zinc fasteners, blue zinc screws, zinc chromate fasteners, zinc plated hardware with colored passivation, 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. If your order includes both colored zinc and other finishes, the comparison guide for black oxide vs zinc plated fasteners can help align selection with indoor, dry, or lightly exposed service conditions.
Detailed Specifications Table
| Item | Common Options | Buyer Notes |
|---|---|---|
| Product range | Hex bolts, flange bolts, carriage bolts, machine screws, self tapping screws, nuts, washers, studs, anchors | Mixed fastener orders can be packed by item number, size, finish, or project package. |
| Standards | DIN 933, DIN 931, DIN 912, DIN 7991, DIN 934, DIN 125, ISO 4017, ISO 4032, ANSI/ASME items | Drawings should define dimensions when the part is not a direct standard equivalent. |
| Diameter range | M2 to M30 commonly requested; inch sizes available according to order requirement | Small screws may require tighter control of plating build-up on drive and thread areas. |
| Length range | Short machine screws, standard bolts, long rods, and custom cut lengths | Length tolerance should be stated for cut rods, shoulder parts, and special assemblies. |
| Material | Low carbon steel, medium carbon steel, alloy steel, stainless steel, brass | Material certificate or test report can be arranged when specified in the purchase order. |
| Finish color | White, blue, yellow, black, clear, or buyer-approved sample tone | Color variation may occur by batch and base material; approved samples help reduce disputes. |
| Packaging | Bulk cartons, small boxes, plastic bags, kitting, palletized export packing | Barcode labels, item labels, and carton marks are available upon request. |
Material and Grade Explanation
Colored zinc fasteners are most commonly produced from carbon steel because electro zinc plating is economical and suitable for many indoor and sheltered applications. Grade 4.8 and 5.8 are often used for light assembly, while grade 8.8 or 10.9 may be selected for higher mechanical load. When strength is important, buyers should confirm the standard, property class, heat treatment condition, and inspection requirement before confirming the order.
For bolt programs, XZ Fastener can supply related items such as DIN 933 zinc plated hex bolts and DIN 934 zinc plated hex nuts so mating components are sourced with compatible finish and thread fit.
Surface Finish Selection Guide
Colored zinc should be chosen with service environment in mind. It is suitable for many indoor machines, cabinets, brackets, and commercial hardware, but it is not the same as hot dip galvanizing for heavy outdoor exposure. If the assembly uses bolts, nuts, and washers together, review surface finish selection for nuts, washers, and bolts so all contact surfaces are compatible.
Manufacturing and Quality Control
Production can include wire inspection, cold heading or machining, thread rolling, heat treatment where required, cleaning, electro zinc plating, colored passivation, drying, sorting, and export packing. For assemblies where appearance is important, visual inspection should cover color consistency, white rust, oil stain, peeling, thread damage, and mixed finish risk. Buyers can use the fastener quality inspection checklist to define which documents, tests, and sample approvals are needed before shipment.
Inspection Items Commonly Requested
- Dimension check for diameter, length, head size, thread pitch, and drive fit.
- Thread gauge inspection after plating for nuts, screws, and external threaded parts.
- Hardness or tensile test according to standard and grade requirement.
- Coating thickness and color confirmation against approved sample or purchase description.
- Packaging inspection for labels, carton strength, rust prevention, and pallet condition.
Applications
- Electrical cabinets, appliance panels, and enclosure hardware.
- Furniture brackets, hinges, frames, and general assembly hardware.
- Machinery guards, covers, light-duty mounts, and service parts.
- Automotive aftermarket packaging where color identification is useful.
- Construction accessories used in protected or semi-protected conditions.
- Retail and distributor stock where finish color separates item families.
How to Get a Faster Quotation
For a faster quotation, send a size list with standard, diameter, length, material, strength class, finish color, coating thickness requirement, quantity, and packaging method. Drawings or photos are useful when the head shape, recess, washer face, point, shoulder, thread length, or marking is not standard. You can request a quote with inspection requirements, destination port, and any carton label format needed for your warehouse or customer project.
FAQ
Can XZ Fastener supply colored zinc fasteners from China for mixed orders?
Yes. Mixed orders can include bolts, nuts, washers, screws, studs, and other fasteners according to the buyer’s size list, finish color, quantity, and packaging plan.
What information is needed to quote colored zinc fasteners accurately?
Please provide the standard or drawing, material, grade, size, thread, finish color, coating thickness if specified, quantity, packaging, and inspection requirements.
Is colored zinc suitable for outdoor use?
Colored zinc is commonly used for indoor or lightly exposed applications. For stronger outdoor corrosion resistance, hot dip galvanizing, dacromet, stainless steel, or another finish may be more suitable depending on the environment.
Can the color tone be matched to an approved sample?
Color matching can be discussed before production. Buyers should provide a sample or clear specification, and final color should be confirmed according to order requirement because passivation color may vary by batch.
Can colored zinc fasteners be supplied with custom packaging?
Yes. Bulk cartons, small boxes, plastic bags, kitting, barcode labels, carton marks, and pallet packing can be arranged according to the buyer’s packing instructions.
How do buyers reduce the risk of thread tightness after plating?
Buyers should specify thread standard, tolerance, coating thickness, and gauge inspection requirements. For internal threads and small screws, post-plating thread checks are especially important.
Send Your Colored Zinc Fastener Inquiry
Send XZ Fastener your size list, finish color, coating thickness, quantity, packaging method, and inspection requirements. Drawings, photos, samples, or current supplier part numbers will help the team confirm material, thread fit, appearance requirement, and export packing before quotation.
Contact XZ Fastener
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