A: It depends.If we have bulk goods in stock, we can ship goods within 3 days after the QC process. If we don’t have stock, normally it takes 7-15 days for OEM samples and 20-30 days for bulk goods. If it refers to opening the new mold, it takes an extra 7-15 days to make the mold.
Weld Nut
Weld Nuts (Welding Nuts): Overview
Material:
- Common materials: Carbon steel (Grade 8.8/10.9), stainless steel (304/316), galvanized steel, or heat-resistant alloy steel.
- Surface treatments: Zinc plating, Dacromet coating, or passivation (stainless steel) for corrosion and heat resistance during welding.
Manufacturing Process:
- Cold Heading: Forms the nut body with a hexagonal or square base and internal threads.
- Projection/Serration Stamping: Creates raised projections, serrations, or embossed rings on the base to enhance weld adhesion.
- Thread Rolling: Precision internal threading (metric/SAE) for bolt compatibility.
- Heat Treatment: Quenching and tempering (for carbon steel) to improve hardness and tensile strength.
- Surface Coating: Electroplating or specialized coatings applied pre-welding to withstand welding heat.
Key Production Considerations:
- Weld projection design: Consistent height/spacing of projections for uniform current distribution during welding.
- Material compatibility: Match nut material to the base metal (e.g., stainless nuts for stainless sheets).
- Thread protection: Coatings must not clog threads; post-weld cleaning may be required.
- Dimensional tolerance: Ensures flush alignment with the workpiece after welding.
Applications:
- Automotive: Chassis, body panels, exhaust systems, and engine components.
- Sheet metal fabrication: Electrical enclosures, HVAC ducting, and machinery guards.
- Industrial equipment: Conveyors, structural frames, and heavy machinery requiring permanent fastening.
- Construction: Steel frameworks, bridges, and prefabricated metal structures.
Installation:
- Surface preparation: Clean the base metal and nut contact area to remove oxides/contaminants.
- Positioning: Align the weld nut onto the pre-marked spot on the metal sheet or frame.
- Welding method:
- Projection welding: Use electrode pressure and current to fuse the nut’s projections to the base metal.
- Spot welding: Apply localized heat to bond the nut’s serrated base.
- Post-weld inspection: Check for full fusion, no cracks, and thread integrity.
- Bolt assembly: Thread a bolt into the nut after cooling; avoid overtightening.
Note:
- Heat management: Excessive heat during welding can deform threads—use controlled welding parameters.
- Corrosion resistance: Post-weld coatings (e.g., paint) may be needed for exposed areas.
- Load capacity: Verify weld strength matches application requirements (static vs. dynamic loads).
Frequently Asked Questions
A: Normally, we make a 30% deposit after Pl confirmation and a 70% balance before shipment. lf order amountis too small, we can also change to 100% deposit in order to save bank handling charge.
A: A pre-bulk sample check can solve this problem to the largest extent. We will arrange production according to the pre-bulk sample quality standard after your confirmation of the samples.
A: We are not only a trading company but also a manufacturer. Our factory mainly focuses on mold design and quality inspection. Our bulk production may come from the factories we have worked with for a long time, and they are all ISO9001 certified. Through this cooperation model, we can not only ensure product quality and service, but also satisfy the diversified product needs of customers, and the price is more advantageous.
A: Yes,we are very glad to offer you samples.
However the express courier cost from our company to your required address will be upon your account.
Usually we use DHL, UPS, FEDEX or EMS as the courier.
It will take 3-7 days to arrive many Europe countries and North America.
Which express courier we will use, it’s up to your convenient or the express charge.
A: No,just part of our capable categories have been showed in our site.
If you are looking for relative industrial products, please feel free to contact us.
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