There are significant differences between Compression nuts and rivet nuts in terms of function, structural principles, application scenarios, installation methods, etc., as follows:
I. Functional Positioning
Compression Nuts:Its core function is to lock and seal. They are threaded to provide a tight connection between components while preventing leakage of liquids or gases. For example:
In electrical equipment, compression nuts are used with sealed plugs to ensure water and dust resistance of cable connections (e.g., IP65 protection rating);
In a piping systems, the compression chamber locks the hose or cable to prevent media leakage.
Riveting Nuts:Its core function is thin plate fixation and threaded connection. Riveting technology used to fix the thin plate or tube instead of traditional welding or tapping, and the connection problem of thin plate or tube is solved. For example:
Rivet nuts are used to secure internal parts or external attachments in metal plate on the body of an automobile.
In the housing of electronic equipment, they provide stable threaded connectors for subsequent assembly.
ii. Structural principles
Compression Nut
Structure:Typically a hexagonal body with an outer thread (e.g., G3/4 pipe thread) at one end and a compression cavity at the other, including seals (e.g., a rubber gasket).
Principle:Tightening threads creates axial pressure that deforms the compression cavity and locks onto the target component (e.g., cable, hose). At the same time, check the gap and move forward.
Rivet Nut
Structure:Circular or hexagonal body with relief teeth, guide grooves, or a deformable structure at one end (such as the bulging tail of a rivet nut).
Principles:
Compression Nut:Pressurized teeth are pressed into pre-drilled holes in the plate. The surrounding material deforms plastically and flows into the guide groove, forming a mechanical lock.
Rivet Nut:External tension expands the tail fin and clamps the plate in place.
III. Application Scenarios
Pressure nuts:
Industrial applications: Pipeline connection (e.g. cable gland lock) in petroleum, chemical, electricity, etc.;
Explosion-proof environment: Explosion-proof junction box, control cabinets cable seal, comply with explosion proof standard (e.g., ATEX certification);
Outdoor equipment: Electrical equipment suitable for harsh conditions (e.g. salt injection, vibration) in shipping and rail transportation.
Riveting Nuts:
Thin sheet metal connections: automobile body, aerospace sheet metal, appliance housings, etc. (0.5mm-6mm);
(a) Space-restricted situations: Enclosed pipes, irregular structures or parts that cannot be accessed from behind (e.g. internal fixation of square pipes);
Efficiency requirements: Replacement of welding or tapping in mass production to reduce labor intensity (e.g. application of automatic riveting equipment).
IV. INTRODUCTION INTRODUCTION Installation Method
Pressure nuts:
Tool: Wrench or torque gun, tighten to recommended torque (e.g. 8Nm);
Step: Tighten nuts to proper joints → Insert cable/hose → Tighten to the specified torque → Check seal. Rivet Nuts
Tools:
Pressure Rivet Nuts: Hydraulic press or pressure riveter;
Rivet Nuts: Pneumatic/manual rivet gun;
Steps:
Pressure Riveting: pressure plate → feed nut → maintain pressure until deformation is complete;
Rivet: Stretch nut → clamp rivet gun → stretch until inflated and fixed.
V. Summary of core variances
Features: Pressure nuts, rivet nuts;
Core Functions: locking, sealing, sheet fixing, thread supply.
Structural features: hexagonal valve + clamping cavity + sealing structure; circular/hexagonal valve + deformable structure (knitted teeth/ unfurled tail)
Typical Application: Pipe connections, blastproof equipment, outdoor electrical system, sheet metal of automobile, aerospace structures, electronic equipment shell
Installation Dependence: thread fastening + torque control; Pressure/tension deformation + mechanical locking
Material Compatibility: Aluminum alloy (corrosion resistant), stainless steel, Carbon steel, stainless steel, aluminum alloy (optional)