Product Details
AgW Contact Rivet
The AgW contact rivet is a riveted contact form for high-volume LV electrical apparatus, a silver-tungsten contact button with a pre-formed mounting head (r...
Technical Description
AgW Contact Rivet
The AgW contact rivet is a riveted contact form for high-volume LV electrical apparatus — a silver-tungsten contact button with a pre-formed mounting head (rivet shank) ready for mechanical assembly onto the contactor or relay carrier. Riveting eliminates the brazing step that brazed-on tips require, which speeds up assembly and reduces per-unit cost in volume production.
Common forms are bimetallic: an AgW head (the active contact face) backed by a copper, copper alloy, or steel rivet shank (the mounting and current-conduction body). For brazed-on tip form factors, see AgW Contact Tip.
Specifications
| Property | Value |
|---|---|
| Head Material | AgW30 / 40 / 50 / 70 (most common for riveted form) |
| Shank Material | Copper, copper alloy, or steel per drawing |
| Form | Bimetallic rivet — AgW head + metal shank |
| Head Diameter | Per drawing |
| Head Thickness | Per drawing (typically 0.5–3 mm for LV duty) |
| Shank Diameter | Per drawing |
| Shank Length | Per drawing |
| Tolerance | Per drawing |
| Conductivity (head) | ≥45 (AgW70) to ≥75 (AgW30) % IACS per GB/T 8320-2025 |
| Bonding | Head bonded to shank per industry-standard process |
| Mounting Method | Riveting (cold-form or heat-set) |
Exact certified properties for your lot are available with material documentation on request.
Applications
- High-volume LV AC contactor production
- Relay and control switch contacts assembled by riveting
- LV circuit breaker contact assembly in volume production
- OEM apparatus designs specifying riveted contact form
Technical Notes
The riveted contact form trades manufacturing flexibility for assembly speed. In volume production (10K+ contactors per batch), riveting at the apparatus assembly line is significantly faster and cheaper per unit than brazing tips at the contact-supply stage. For lower-volume or higher-customization production, brazed tips give more design flexibility.
For the AgW + metal shank bond, the bonding process — cold-form pressing or heat-assisted joining — affects both joint strength and electrical resistance at the interface. We supply rivets with consistent bond quality across the order; specify your apparatus's expected operating cycles and we can confirm the bond approach is matched.
Head thickness matters for service life. Thicker AgW heads outlast thinner heads through more arc cycles at higher cost per piece. For most LV contactor applications, head thickness in the 1–2 mm range is typical; motor starter and heavy-duty applications may justify thicker heads.
Sourcing & OEM
Custom AgW contact rivets to your drawing are routine. Specify the head grade and dimensions, shank material and dimensions, and any tolerance requirements; contact us for a project-specific quote.
Technical FAQ
Common questions about this product.
What AgW grades work best for riveted contacts?
AgW30 / AgW40 / AgW50 are most common for general LV apparatus where contact resistance matters and arc duty is moderate. AgW70 is used in heavy-duty applications. The grade choice depends on the apparatus duty cycle.
What shank materials are available?
Copper for highest conductivity (general apparatus), copper alloy for higher mechanical strength (motor starter shanks), or steel for cost-sensitive applications where the shank is only mechanical (no electrical role). Specify your application and we can recommend.
Is the AgW-shank bond brazed or pressed?
Industry-standard riveted contacts use a mechanical/metallurgical bond appropriate to the materials and apparatus duty. We can produce both pressed (cold-formed) and heat-assisted bonds; specify your assembly process if you have a preference.
Can rivets be supplied with specific head shapes?
Yes. Round, oval, rectangular, or custom head shapes per drawing. Specify the head profile and any chamfer or radius requirements.
What head thickness is typical?
For most LV contactor applications, 1–2 mm head thickness is typical. Heavy-duty applications (motor starters, high-cycle contactors) may specify thicker heads. Match your apparatus's expected service life requirements.
What is the typical lead time?
Lead time varies by grade, dimensions, head/shank material combination, and quantity. Contact us with your specifications.
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