81/82/85 - DZUS® Lion Quarter-Turn Fasteners

81/82/85 - DZUS® Lion Quarter-Turn Fasteners

The simplicity of a quarter turn is all it takes to secure panels quickly and easily with these versatile little fasteners.Numerous head styles, stud lengths, receptacle styles, and accessories, provide flexibility for accommodating many specific mounting requirements.

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These space-saving fasteners provide a precise fit within a defined grip limit of 0.5 mm (.02"), for accurate positioning of panels.This makes them a good solution for sheet metal applications where dimensions are constant.Fasteners are available in 0.5 mm (.02") stud length increments to provide the opportunity to match the application precisely.

  • Integrate three separate component choices – stud, retainer, and receptacle – to suit application requirements.(Choose receptacle first to determine length of stud shaft.)
  • Built-in retention features keep fastener hardware with panel and frame, eliminate dropped or lost components
  • A variety of head styles provides choices for convenient manual use or tool-restricted access
  • Each fastener component provides a degree of spring action for a snug fit
  • Numerous corrosion-resistant components

Available Options

  • Also available in stainless steel constructions
  • Stainless, nylon, and snap-in stud retainers
  • Shielded press-in receptacles provide RFI-EMI shielding
  • Numerous accessories and installation tools enhance the benefits of quick access fastening

Standards and Specifications

  • Specific hardware components and sizes determine maximum working loads

Industry Applications

  • Aerospace
  • Automotive - Trucks
  • Computers
  • Construction Equipment & Off-Highway Vehicles (Farm Equipment)
  • Electronic Enclosures
  • Exhibits/Signs
  • Food Equipment
  • Furniture
  • HVAC
  • Industrial Enclosures
  • Lawn/Garden Equipment
  • Medical
  • Networking

Retainers
Stainless, nylon, split ring, and snap-in retainers hold stud captive to panel
Wear Washers
Cupped wear washer or flat wear washer, protects finish of outer panel from friction of turning stud
Sealing Washer
Rubber sealing washer provides tight seal between head of stud and panel
Ejector Spring
Raises unfastened stud, indicates "unlatched" statusl
Toolhead Key
Provides restricted-access security
Installation Tools
Installation tools for receptacles, retainers, and flare-in style mounting are available in a variety of sizes and styles, as needed, to suit particular hardware components.(See Product Configurator page for details.)
Small
Small size (81 Series) provides quick access for limited-space applications
Medium
Medium size (82 Series) offers the widest variety of assembly styles
Large
Large size (85 Series) provides the most robust assemblies for heavier applications
Hand Actuated
Wing Head
Bail Style
Knurled Knob

Tool Actuated
Slot
Phillips
Flush Phillips
Hex Socket
Security Tool Recess
Flat Rivet-On
Limited protrusion, low cost
Flat Weld-On
Limited protrusion
Clip-On
Fast, easy, low-cost installation where a flange or frame edge is available
Vibration Isolating
Eliminates rattle in high-vibration applications
Snap-In
Quick, low-cost installation for panels up to 2.5 mm (.10") thick
Ultrasonic
Increased torque and pull-out strength with limited residual stress in thermoplastics
Press-In
Used for castings and blind hole applications
Shielded Press-In
For RFI-EMI shielding
Side Mount
For applications where a mounting flange is not available
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