2025-06-06 18:14:46
Blind Rivets, also known as pop rivets, are mechanical Fasteners designed for joining materials where access is limited to only one side. They consist of two primary components: a hollow rivet body (typically 3–10 mm in diameter) and a mandrel (0.8–4 mm in diameter). The installation process involves inserting the rivet into pre-drilled holes and using a specialized tool to pull the mandrel, which deforms the rivet body to create a secure joint. Unlike solid rivets, Blind Rivets require 60–80% less installation force (typically 200–800 N) while achieving comparable shear strength (up to 5,000 N for steel variants).
Blind rivets can be installed from a single side, making them ideal for applications where the rear is inaccessible. The grip range (material thickness capacity) varies from 0.5 mm to 12 mm, with multi-grip rivets accommodating variable thicknesses within ±1 mm tolerance.
Common materials include:
Aluminum (AA5056/AA5052): Tensile strength 180–300 MPa, weight 2.7 g/cm³
Stainless Steel (A2/A4): Corrosion resistance up to 1,500 hours salt spray, shear strength 3,200–5,000 N
Monel: Nickel-copper alloy with 550 MPa tensile strength, used in marine environments
Interlocked mandrel designs (like Grooved or Multi-Grip) withstand 5–15 G vibration loads without loosening, maintaining clamp force within ±10% after 10⁶ cycles.
Closed-end or sealed rivets achieve IP67–IP69K ingress protection, withstanding 1–3 bar pressure differentials for waterproof applications.
Used in aircraft skins with 0.1–3 mm aluminum alloys, requiring MIL-SPEC compliance for fatigue life exceeding 10⁷ cycles at 80% yield load.
EV battery enclosures use stainless steel rivets with 1,000+ hour salt spray resistance, maintaining 90% joint integrity after crash tests at 50 km/h.
Facade panels employ 4.8 mm diameter aluminum rivets with 2,200 N shear capacity, accommodating thermal expansion of ±2 mm/m at 80°C ΔT.
PCB mounting uses nylon-insulated rivets with dielectric strength >15 kV/mm, preventing galvanic corrosion between dissimilar metals.
Store in 15–25°C, <60% RH to prevent oxidation (especially for aluminum)
Verify hole diameter: rivet diameter +0.1 mm for optimal interference fit
Use calibrated tools with ±5% force accuracy to prevent under/over-setting
Maintain 90° alignment during pulling to avoid ovalization (>0.2 mm deviation causes 20% strength reduction)
Inspect mandrel break position: 0.5–1.5 mm protrusion indicates proper setting
Apply corrosion inhibitors (e.g., Dinitrol 3125) for harsh environments, reapplying every 2–5 years
Critical Note: Never reuse blind rivets – installed rivets experience 15–30% permanent deformation, making reinstallation impossible without compromising joint integrity.
For structural applications, conduct:
Torque checks (0.1–0.3 Nm) on critical joints annually
Eddy current testing to detect >0.5 mm cracks in aerospace rivets
Galvanic corrosion inspection where dissimilar metals contact (check every 6 months in coastal areas)
Room 101, Building 6, No. 43, Kwai Ching Road, Qingxi Town, Dongguan City, Guangdong Province, China
+86 13620070919 +86 13580778676
Dongguan Tianci Screw Products Co., Ltd, founded in May 2009, is an industrial manufacturing plant.
Specializing in the development and production of standard, non-standard fasteners customized, pressure riveted parts, shaped bolts and nuts, precision small hardware and so on.
