The best rivet is not simply the strongest available. It is the correct type, material, diameter and grip range for the joint, access, load and environment. A poor match can spin in the hole, pull through soft material, corrode against the parent metal or leave a loose assembly. Browse the fasteners range when comparing rivets with other fixing options.
What to check before choosing a rivet
- Access: can you reach one side or both sides of the joint?
- Grip thickness: what is the combined thickness of every layer?
- Materials: are the rivet body, mandrel and parent materials compatible?
- Loads: will the joint see shear, pull-out, vibration or impact?
- Environment: will it face moisture, chemicals, heat or UV exposure?
- Finish: does head profile, sealing or surface appearance matter?
Do not choose by diameter alone. The rivet must also cover the measured grip thickness. A rivet outside its specified grip range may not form a dependable closing head.
Blind rivets for one-sided access
Blind rivets, often called pop rivets, are fitted from one side. A setting tool pulls the mandrel through the body, expanding it behind the material before the mandrel breaks.
They suit guards, cabinets, ducts, brackets, enclosures and light-to-medium sheet fabrication. Standard aluminium-body rivets with steel mandrels are easy to set, but may not suit wet or corrosive environments. Check the complete body-and-mandrel specification.
Large-flange blind rivets spread load over a wider area and can help with thin sheet, plastics and composites. Closed-end designs can provide better protection against moisture or dirt than open rivets, but they should not be assumed fully sealed unless the complete joint and product specification support that requirement.
Solid rivets for permanent joints
Solid rivets require access to both sides and controlled forming of the tail. They can produce strong permanent joints in suitable assemblies, but rivet material, diameter, length, hole preparation and forming method must all match the design.
Do not treat a general-purpose solid rivet as automatically suitable for structural or safety-critical work. Follow the relevant drawing, standard or engineered specification.
Rivet nuts for removable panels
Rivet nuts, also called threaded rivets or nutserts, create an internal thread in thin sheet, tube or box section where rear access is limited. They are useful for removable guards, covers, panels and equipment requiring future servicing.
Choose the thread size, body style, grip range and material carefully. Round, splined and hexagonal bodies provide different resistance to turning. Hole size and installation quality are critical, as an oversized hole or weak setting can allow the insert to spin.
For high clamp loads, structural duty or frequent disassembly, a through-bolt and nut may be more suitable where access allows.
Plastic rivets
Plastic rivets suit trim, lightweight housings, cable management and other non-structural assemblies. They resist corrosion and can reduce damage to delicate panels, but their load, temperature, chemical and UV limits must suit the application.
Material compatibility and corrosion
Consider the rivet body, mandrel, parent material and coatings together. Dissimilar metals can promote galvanic corrosion when moisture is present. Aluminium, steel and stainless rivets each have different strength, setting-force and corrosion characteristics.
Deburr drilled holes and protect exposed steel where required. For outdoor, marine-influenced, washdown or chemically exposed work, verify the complete material combination rather than selecting by appearance. Our fastener coatings guide covers finish and corrosion considerations.
Diameter, hole size and grip range
Use the hole diameter specified by the rivet manufacturer. A hole that is too small can damage the rivet; one that is too large can reduce clamp reliability and encourage tilting, pull-through or spinning.
Measure every layer in the joint and choose a grip range that covers the total. Check edge distance and material thickness before increasing rivet diameter. Several correctly spaced rivets may distribute load more effectively than one oversized fixing, but spacing and quantity should follow the joint requirements.
Installation checklist
- Mark and drill square to the surface.
- Remove swarf and burrs so the sheets sit together.
- Use the correct tool and nosepiece.
- Keep the setting tool square during installation.
- Check the visible head sits flat.
- Inspect the closing head where access permits.
- Replace loose, distorted or incorrectly set rivets.
For repeat work, record the rivet type, material, diameter and grip range with the job. A correctly specified and installed rivet should hold for the required service life without creating avoidable corrosion, damage or maintenance problems.