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العربية Dacromet Coated Fasteners Supplier for Industrial Corrosion-Resistant Assemblies
XZ Fastener supplies Dacromet coated fasteners for buyers who need corrosion resistance, controlled coating thickness, and reliable assembly performance in automotive, machinery, construction, solar mounting, wind power, and outdoor equipment projects. The coating can be applied to bolts, nuts, washers, threaded rods, anchors, screws, studs, and custom fasteners according to order requirement. Common inquiries include DIN 933 full thread hex bolts, Grade 8.8 carbon steel hex bolts, metric hex head bolts, and matched bolt-nut-washer sets. Send size list, material, finish, quantity, packaging, and inspection needs for a practical quotation.
Quick Specs
What Buyers Should Know Before Sourcing Dacromet Coated Fasteners
Dacromet coating is commonly selected when buyers need improved corrosion resistance with less coating build-up than hot dip galvanizing. It is often used for higher-strength carbon steel fasteners because the coating route can help reduce certain risks associated with electrolytic zinc plating. For a broader finish overview, XZ Fastener provides a fastener coating guide covering zinc, HDG, Dacromet, PTFE, and related options.
Before sourcing, confirm the part type, material, grade, thread fit, coating thickness, color, salt spray target, and whether the fasteners will be assembled with nuts or washers. Dacromet coating may be requested for DIN 933 full thread hex bolts, DIN 931 partial thread bolts, washers, nuts, threaded rods, and custom parts.
Procurement tip: If a drawing only says “silver coating” or “zinc flake,” confirm whether Dacromet, Geomet, zinc plating, or another zinc-aluminum flake system is required. The finish affects appearance, cost, corrosion resistance, and thread fit.
Common Purchasing Descriptions
Buyers may describe Dacromet coated fasteners in several ways. XZ Fastener can review the wording and confirm the most suitable process, standard, grade, and inspection requirement.
For comparison, buyers often evaluate zinc plated DIN 933 bolts, black oxide DIN 933 bolts, and hot dip galvanized DIN 933 bolts alongside Dacromet coated options before selecting the final surface treatment.
Detailed Specifications Table
| Specification Item | Available Options and Buyer Notes |
|---|---|
| Product name | Dacromet coated fasteners, zinc-aluminum flake coated fasteners, Dacromet bolts, Dacromet nuts, coated washers, coated threaded rods. |
| Fastener types | Hex bolts, flange bolts, socket bolts, nuts, washers, threaded rods, anchors, screws, studs, and custom drawing parts. |
| Standards | DIN 933, ISO 4017, DIN 931, ISO 4014, DIN 934, ASTM, ASME, EN, JIS, GB, or customer drawing. |
| Size range | Common metric and inch sizes can be reviewed according to product type, coating process, and order quantity. |
| Thread options | Metric coarse, metric fine, UNC, UNF, full thread, partial thread, rolled thread, cut thread, or special pitch. |
| Material | Carbon steel, alloy steel, stainless steel, medium carbon steel, or specified material grade. |
| Strength | Grade 4.8, 8.8, 10.9, 12.9, stainless grades, or specified mechanical class according to application. |
| Coating requirement | Dacromet or zinc-aluminum flake coating with coating thickness, appearance, adhesion, and salt spray requirement as specified. |
| Matching parts | Coated nuts, washers, lock washers, flat washers, spacers, and complete bolt-nut-washer sets. |
| Inspection | Dimension check, thread gauge, coating thickness, adhesion, salt spray, hardness, tensile test, and final packing inspection. |
| Packaging | Bulk cartons, small boxes, bags, trays, anti-rust packing, pallets, barcode labels, private label, and project-specific packing lists. |
Common Dacromet Coated Fastener Types
| Fastener Type | Typical Requirement | Buyer Notes |
|---|---|---|
| Hex bolts | DIN 933, ISO 4017, DIN 931, ISO 4014 | Confirm thread fit after coating, especially for tight assemblies. |
| Nuts and washers | DIN 934 nuts, flat washers, spring washers, special washers | Specify whether all mating parts need the same coating system. |
| Threaded rods and studs | Full length coating, partial coating, or end protection | Check thread engagement and coating uniformity on long parts. |
| Anchors and brackets | Outdoor or project coating requirement | Application exposure and salt spray target should be stated. |
| Custom fasteners | Drawing-based geometry and coating | Coating thickness may affect holes, grooves, threads, and mating surfaces. |
Material and Grade Explanation
Dacromet coating is often selected for carbon steel and alloy steel fasteners where corrosion protection and mechanical performance must be balanced. Grade 8.8 carbon steel hex bolts are common, while 10.9 or 12.9 options may be reviewed according to the part, coating system, and application requirement. Material and strength should always be confirmed before coating selection.
For high-strength fasteners, buyers should consider coating process, hydrogen embrittlement sensitivity, and post-treatment requirements. XZ Fastener’s note on zinc plating and hydrogen embrittlement risk can help purchasing teams compare Dacromet with electrolytic zinc plating.
Surface Finish Selection Guide
Dacromet is selected for corrosion resistance, controlled coating thickness, and good coverage on complex shapes. Zinc plating is often chosen for general indoor or light-duty use. Black oxide provides dark appearance with limited corrosion protection. Hot dip galvanizing provides heavy outdoor protection but can influence thread fit more significantly.
For finish comparison, review the corrosion resistance comparison and the surface finish comparison chart. If a specific salt spray value is required, include the test standard and target hours in the inquiry.
Manufacturing and Quality Control
Dacromet coated fasteners are typically produced through fastener forming, thread rolling or machining, heat treatment when required, surface preparation, coating application, curing, inspection, and final packing. The process route depends on product type, material, grade, geometry, coating requirement, and order quantity.
Quality control can include raw material verification, dimensional inspection, thread go/no-go gauge testing, coating thickness measurement, adhesion check, salt spray testing, surface appearance review, sample assembly, and packaging verification. For detailed coating inspection planning, buyers can review custom fastener coating inspection.
Additional process and inspection references are available in XZ Fastener’s technical guides.
Applications
- Automotive brackets, chassis components, and high-strength assembly hardware.
- Solar mounting systems, wind power components, and outdoor support structures.
- Machinery, equipment frames, agricultural equipment, and construction hardware.
- Pipe supports, clamps, anchor assemblies, and threaded rod connections.
- Distributor stock programs requiring corrosion-resistant coated fastener sets.
- Custom fasteners where coating thickness and corrosion resistance must be controlled together.
For broader product matching, buyers can browse XZ Fastener’s fastener products range and specify which items require Dacromet coating.
How to Get a Faster Quotation
To receive a clearer quotation for Dacromet coated fasteners, send the following information:
- Size list, product type, standard, length, thread pitch, and quantity for each item.
- Material and grade, such as Grade 8.8 carbon steel hex bolts, 10.9, 12.9, or specified material.
- Coating requirement, including Dacromet type, color, thickness, adhesion, and salt spray target if specified.
- Matching nuts, washers, lock washers, spacers, or complete assembly requirements.
- Packaging method, carton weight, pallet requirement, labels, barcode, and private label needs.
- Inspection requirements, sample approval needs, certificates, and target delivery schedule.
You can request a quote with a spreadsheet, drawing, sample photo, or current purchase specification.
FAQ
What are Dacromet coated fasteners used for?
Dacromet coated fasteners are commonly used for automotive, machinery, solar mounting, wind power, outdoor equipment, construction hardware, and assemblies requiring improved corrosion resistance.
Can DIN 933 full thread hex bolts be supplied with Dacromet coating?
Yes. DIN 933 full thread hex bolts and other metric hex head bolts can be supplied with Dacromet coating according to grade, size, quantity, and coating requirement.
How is Dacromet different from zinc plating?
Dacromet is a zinc-aluminum flake coating system, while zinc plating is usually an electrolytic coating. Dacromet is often selected where corrosion resistance and high-strength fastener coating concerns must be balanced.
Does Dacromet coating affect thread fit?
Dacromet generally has more controlled build-up than hot dip galvanizing, but thread fit should still be checked when tolerances are strict or when nuts and bolts are coated as a matched assembly.
Can Dacromet coated nuts and washers be supplied together with bolts?
Yes. Coated nuts, flat washers, spring washers, lock washers, spacers, and complete bolt-nut-washer sets can be supplied according to order requirement.
What inspection items should buyers request for Dacromet coated fasteners?
Common inspection items include dimensions, thread gauge, coating thickness, adhesion, salt spray test, surface appearance, hardness, tensile test, sample assembly, and packaging verification.
Send Your Dacromet Coated Fastener Inquiry
For faster pricing, send your size list, finish, quantity, packaging, and inspection requirements. XZ Fastener can review Dacromet coated fasteners, DIN 933 full thread hex bolts, Grade 8.8 carbon steel hex bolts, metric hex head bolts, coated nuts and washers, threaded rods, anchors, and custom parts. To discuss project details, contact XZ Fastener.