Low Profile Flat Head Tri-Fold Rivets
What are low profile flat head tri-fold rivets? These are tri-fold rivets with a flat, low profile head that sits closer to the panel surface than a dome, without requiring a countersunk hole. The body still splits into three legs on the blind side for a wide clamping footprint. The appeal is clearance: where a dome head would catch, protrude, or interfere with something passing over the joint, a low profile flat head gives most of that clearance benefit while keeping the full bearing area on the panel face. AlbanyCountyFasteners.com stocks these in aluminum, in 3/16 inch.
Low profile flat head or countersunk?
They solve the same problem in different ways, and which one suits depends on the material. A countersunk rivet sits truly flush, but the hole has to be countersunk to receive the head, which removes material from a panel that may already be thin. On light gauge sheet that countersink can leave a knife edge or break through entirely. A low profile flat head needs no countersinking at all: you drill a straight hole and the head sits low against the surface. It is not flush, but it is much lower than a dome, and it keeps the panel material intact. On thin skin where countersinking is not viable, this is usually the right compromise.
Why choose low profile flat head tri-fold rivets
- Lower finished profile than a dome head with no countersinking required
- Keeps thin panel material intact where a countersink would break through
- Flat bearing face spreads load evenly on the panel surface
- Three folding legs give a wide blind side clamp in thin material
- Reduces snag points where something passes over the joint
Common applications
- Thin gauge panels too light to countersink safely
- Interior surfaces where a dome head would catch or snag
- Joints with limited clearance to an adjacent component
- Trailer and RV panels where profile matters more than a full flush finish
- Repairs over enlarged holes needing a low head
- Surfaces later covered by trim, gasket, or a mating part
For a fully flush finish in material thick enough to countersink, see countersunk rivets. Where head profile is not a constraint, dome head tri-fold rivets come in a wider size range and include sealing washers.
Related Categories
- Tri-Fold Rivets
- Dome Head Tri-Fold Rivets
- Countersunk Rivets
- Shave Head Tri-Fold Rivets
- Rivet Washers
Low Profile Flat Head Tri-Fold FAQs
Do these sit flush?
No, they sit low but still proud of the surface. Only a countersunk rivet in a countersunk hole sits truly flush. Low profile flat head is the middle option between a dome and a countersink.
Do I need to countersink the hole?
No, and that is the main advantage. Drill a straight hole slightly larger than the rivet body and the head seats on the surface. This is what makes them usable on thin material that cannot be countersunk.
Do these come with a sealing washer?
The low profile flat head versions we stock are supplied without a washer. If your joint needs a seal, use a dome head or recessed crown tri-fold rivet with a sealing washer, or apply a sealant at installation.
Is the bearing area smaller than a dome head?
The flat face bears evenly across its full diameter rather than curving away from the panel, so contact is comparable and in some respects better distributed. Both rely on the tri-fold legs for the blind side clamp.
What sizes are available?
3/16 inch, in three grip ranges covering 0.250 through 0.500 inch. For other diameters in a tri-fold rivet, our dome head range covers 3/16 and 1/4 inch.
Can I paint over the head?
Yes, and the flat face takes paint more evenly than a curved dome. Prime the mandrel break, since that is where any corrosion would start on an exposed panel.