Aluminum Low Profile Flat Head Tri-Fold Rivets
What are aluminum low profile flat head tri-fold rivets? These are tri-fold rivets with an all aluminum body and mandrel and a flat, low profile head that seats on the panel surface without countersinking. The body folds into three legs behind the panel for a wide clamping footprint, so they hold in thin material, while the low head keeps the finished joint close to the surface. Matched aluminum construction means no dissimilar metal against an aluminum panel. AlbanyCountyFasteners.com stocks these in 3/16 inch across three grip ranges.
Rivet Number, Diameter:
Why this style for thin aluminum?
Because thin aluminum rules out the alternative. When clearance matters, the instinct is to reach for a countersunk rivet, but countersinking removes material from the panel, and on light gauge aluminum there often is not enough thickness to give up. Cut a 120 degree countersink into thin skin and you either leave a fragile knife edge around the hole or break through it entirely. The low profile flat head sidesteps that: a straight drilled hole, a head that sits low on the surface, and the panel keeps its full thickness around the fastener. Combine that with the tri-fold legs spreading load behind the skin and you have a rivet that suits thin aluminum better than either a dome or a countersink would.
Why choose aluminum low profile flat head tri-fold rivets
- Low finished profile without removing panel material to a countersink
- Three folding legs prevent pull-through in thin aluminum skin
- No dissimilar metal against an aluminum panel, so no galvanic corrosion
- Flat bearing face distributes load evenly on the surface
- Easy to set, so a standard hand riveter handles them comfortably
Sizes and grip ranges
- 3/16 inch in grip ranges of 0.250, 0.375, and 0.500 inch
- Order by body diameter, then match grip range to your total material stack
- Drill a straight hole slightly larger than the rivet body, no countersink needed
- Supplied without a sealing washer
Common applications
- Thin aluminum panels too light to countersink
- Interior trailer and RV panels where a dome head would snag
- Joints with limited clearance to adjacent components
- Aluminum sheet metal work needing a low profile finish
- Surfaces later covered by trim, gasket, or a mating part
- Repairs over enlarged holes where head profile matters
If the joint needs a seal, use aluminum dome head tri-fold rivets, which include a sealing washer. For a fully flush finish in thicker material, see countersunk rivets.
Related Categories
- Low Profile Flat Head Tri-Fold Rivets
- Aluminum Dome Head Tri-Fold Rivets
- Tri-Fold Rivets
- Countersunk Rivets
- Rivet Washers
Aluminum Low Profile Flat Head Tri-Fold FAQs
Do these seal against water?
Not on their own, since they are supplied without a washer. For a sealed joint, use a dome head or recessed crown tri-fold rivet with a sealing washer, or apply a compatible sealant at installation.
How low is the head?
Noticeably lower than a dome head, though still proud of the surface. It is the middle ground between a standard dome and a fully flush countersunk installation.
Can I countersink the hole anyway?
No, these are designed for a straight hole. The flat underside of the head bears on the panel surface, so a countersink would leave it unsupported and the rivet would set poorly.
Will they hold in thin skin?
That is what the tri-fold legs are for. The wide blind side footprint spreads clamping force across enough material to resist pull-through where a conventional rivet would dimple or tear the panel.
Are these structural?
No, tri-fold rivets are non-structural regardless of head style or