Rivets
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Frequently asked questions
How do I choose blind rivet length?
Blind rivet length is chosen by the total thickness of the parts being joined, called the grip range in the data table. Too short gives an incomplete rear head, too long gives a weak, loose one. The drilled hole is typically about 0.1 mm larger than the rivet diameter.
Which rivet material suits aluminum assemblies?
Use aluminum-bodied rivets on aluminum sheet to avoid galvanic corrosion. Aluminum rivets with steel mandrels are cheap and common, but the steel mandrel head left in the rivet can rust outdoors. In damp environments choose aluminum with a stainless mandrel, or all-stainless rivets for stainless sheet.
Which rivet should be used when only one side is accessible?
Blind rivets are designed for one-side installation, most commonly in dome and countersunk heads. For thin or soft materials such as plastic, large-flange or split-leg types spread the load. Where a thread is needed in thin sheet, use a rivet nut instead.
When are sealed (closed-end) rivets used?
Closed-end blind rivets have a sealed body that keeps water, air and dust from passing through the hole. They suit outdoor electrical enclosures, vehicle bodies and air ducts. The mandrel head is also retained inside, so it does not drop into equipment.
What hole size should be drilled for blind rivets?
The hole is usually about 0.1 mm larger than the rivet body diameter, for example a 4.1 mm drill for a 4.0 mm rivet. An oversized hole lets the body expand unevenly, lowering shear strength and possibly letting water through. Remove burrs so the sheets sit tight together.
How is an installed blind rivet removed?
Drill into the center of the rivet head with a drill the size of the rivet body until the head separates, then push the rest of the body out the back. Center punch first so the drill does not wander and enlarge the hole. Do not use a drill larger than the body, or the hole is ruined and an oversize rivet becomes necessary.
How does a rivet nut differ from a blind rivet?
A rivet nut installs into thin sheet from one side like a blind rivet, but leaves an internal thread for a screw afterwards. It is used where parts must be removed repeatedly on thin sheet, box section or aluminum profile. It needs a dedicated rivet nut tool with a mandrel of the correct thread size.
Do blind rivets withstand vibration?
Standard blind rivets can loosen under heavy vibration or reversing loads. For vibrating structures such as truck bodies or machine guards, use rivets with a locked mandrel or structural blind rivets. These retain the steel mandrel inside the body, increasing shear strength and resisting loosening.
