Hebei Kappa Metal Products Co., Ltd. is one of the most reliable manufacturers and suppliers of closed end dome head blind rivet al/st in China. Welcome to buy bulk high quality closed end dome head blind rivet al/st made in China here from our factory. If you have any enquiry about cooperation, please feel free to email us.
Drywall screws are not priced by quantity alone. Weight per piece has a direct effect on cost, especially for large orders. A small difference in screw weight can change the total tonnage and the final price.
Send us the details, drawing on my factory-floor experience, we can analyze your specific market conditions and store requirements to help you determine the most precise and appropriate pricing.e-no guesswork on weight.
Please specify:
01
- Diameter × length
- Head type (bugle head, countersunk, etc.)
02
- Thread type (fine or coarse)
- Coating (black phosphate, gray phosphate, zinc, etc.)
03
- Target weight per piece (g/pc)
- Order quantity
04
- Packaging (dimensions of the box/outer carton, package weight, and whether the logo style or color can be customized)
Product Overview
The closed end dome head blind rivet looks like the standard open end rivet from the head side, but the shank is capped: when the mandrel breaks, the spent stem stays captured inside the body instead of pulling through. That closed end seals the hole, so the joint keeps water, air and condensate out of the assembly, and nothing can drop into a duct, a tank or an enclosure. Body is aluminium with a stainless mandrel, diameters run 3.2 to 6.4 mm, and lengths cover the standard grip ranges.
Core Value Proposition
Built-in watertight & airtight sealing function
The tail fully closes after setting, no through-hole left. Stop rainwater, humidity, dust and air leakage at the rivet point.
Value: Eliminate leakage risks for outdoor and liquid-contact assemblies, reduce after-sales leak complaints.
Mandrel locked inside, no loose debris falling off
The broken stem is fully captured within the rivet body, will not drop into enclosed cavities.
Value: Prevent metal fragments from contaminating electronics, pipes or enclosed equipment.
Aluminum body, light weight & moderate corrosion resistance
Aluminum construction delivers low weight and good oxidation resistance for outdoor mild corrosive environments.
Value: Maintain clean surface appearance and extend service life for exposed assemblies.
Comparison
|
Point |
Open end rivet |
Closed end rivet |
|
Hole after setting |
Open, stem passes through |
Sealed, stem captured |
|
Water and air |
Passes the hole |
Blocked by the body |
|
Grip range |
Standard |
Slightly tighter |
|
Typical use |
Dry panels, frames |
Ducts, gutters, enclosures |
|
Setting feel |
Slightly easier |
Slightly firmer |
Application Areas
- HVAC ducts: longitudinal and transverse seams in internal runs.
- Gutters and rainwater: sheet assemblies that must not weep.
- Tanks and vessels: covers and seams where contents must stay in.
- Enclosures: electrical cabinets and machine guards in damp areas.
- Appliances: panels and trays where water must not track inside.
Custom Packaging&Private Label Available
Choose from bulk cartons, poly bags with branded labels, or retail-ready packaging. Minimum order quantities can be adjusted to support both small contractors and large-scale procurement needs.
We offer custom box/bags printing and labeling services to help you build your own product line.
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