Which types of rivets are suitable for use with a riveting machine?

I. Rivet Types Suitable for Riveting Machines

Most blind and solid rivets can be used with automatic or semi‑automatic riveting machines, provided the rivet geometry is compatible with the feeder and riveting head. Below are the most common types:

1. Blind Rivets (Pop Rivets)

These are the most widely used with automatic riveting machines.

Rivet Sub‑TypePopisMachine Suitability
Standard open‑end blind rivetsHollow body with a mandrel; available in aluminum, steel, stainless steelVery good – easy to feed and orient
Closed‑end (sealed) blind rivetsSealed body prevents leakage; used in waterproof/ air‑tight applicationsGood – same geometry as standard
Multi‑grip blind rivetsA larger grip range covers multiple material thicknessesGood – slightly larger head may require special tooling
Structural blind rivets (e.g., Huck, Monobolt)High‑strength, locking‑stem rivetsGood – but require heavier‑duty riveting tools
Peel‑type blind rivetsSplits into legs for soft/ brittle materials (plastic, wood)Moderate – requires careful feeding

2. Solid Rivets

Less common in high‑speed automatic machines, but used in heavy‑duty or custom automated cells.

Rivet Sub‑TypePopisMachine Suitability
Solid round‑head rivetsClassic solid rivet; requires heating or high force for settingLimited – usually manually or hydraulically set
Solid flat‑head / countersunk rivetsUsed in aircraft and structural applicationsLimited – special handling required

3. Semi‑Tubular and Tubular Rivets

Rivet Sub‑TypePopisMachine Suitability
Semi‑tubular rivetsHollow tip that rolls over during settingVery good – widely used in automatic machines (e.g., for small hardware, hinges)
Full‑tubular rivetsCompletely hollow body; used for light‑duty fasteningGood – smaller sizes feed well

4. Self‑Piercing Rivets (SPR)

Rivet Sub‑TypePopisMachine Suitability
Self‑piercing rivetsPierces and joins materials without pre‑drilled holesGood – but requires a specialized SPR machine, not a standard rivet feeder

5. Drive Rivets

Rivet Sub‑TypePopisMachine Suitability
Drive rivetsHammer‑driven; used for light‑duty applicationsNot common – usually hand‑set

II. Rivet Characteristics That Make Them Machine‑Friendly

CharacteristicWhy It Matters
Symmetrical geometry (round head, uniform body)Easier to orient in a vibratory bowl
Head diameter ≥ 2 × shank diameterPrevents jamming in tracks and tubes
Straight, smooth shank (no burrs, sharp edges)Reduces wear on feeder tooling
Length‑to‑diameter ratio ≤ 8:1Prevents tipping and mis‑feeding
Non‑magnetic material (aluminum, stainless)Less likely to cling to feeders (though magnetic rivets can still be fed)
Consistent dimensions (no significant variation)Reliable orientation and feed rate

III. Rivets NOT Recommended for Machine Feeding

Rivet TypeReason
Very large rivets (> 10 mm shank dia.)Too heavy for standard bowl feeders; may require magazine or manual loading
Irregular / asymmetric headsImpossible to orient consistently
Very short or very long rivetsShort → may tip; long → may jam in tubes
Fragile / coated rivetsSoft coatings (e.g., paint, polymer) may scratch or chip in the bowl
Rivets with loose washers / pre‑assembled sealsSeparate components may separate during feeding

IV. Summary Table: Rivet Types vs. Machine Suitability

Rivet TypeSuitable for Standard Riveting Machine?Suitable for High‑Speed Automatic Machine?
Blind rivet (open‑end)✅ Yes✅ Yes
Blind rivet (closed‑end / sealed)✅ Yes✅ Yes (with compatible tooling)
Multi‑grip blind rivet✅ Yes⚠️ Yes, but larger head may need special track
Structural blind rivet (Huck, Monobolt)✅ Yes (heavy‑duty machine)⚠️ Sometimes – requires more force and heavier feeder
Semi‑tubular rivet✅ Yes✅ Yes
Full‑tubular rivet✅ Yes (small sizes)⚠️ Limited – often used in small‑scale machines
Solid rivet❌ No (usually manual or hydraulic)❌ No
Self‑piercing rivet (SPR)❌ No (needs dedicated SPR machine)❌ No
Drive rivet❌ No (hand‑set)❌ No
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