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NEW! eCatalog NEW!

SEMs One Piece Screw & Washer Assemblies

Our captured washers improve productivity, eliminate lost, dropped or forgotten washers and simplify purchasing and inventory control.


SEMs One Piece Screw & Washer Assemblies 

   




  Sems
  Fastening Solutions Catalog [8,731 KB]

Overview

Many fasteners are available as assemblies with captivated washers, collars, specialized stampings or other components. Engineered assemblies, which combine metal, plastic and other components into one subassembly, are also available. Captured washers improve productivity, eliminate lost, dropped or forgotten washers and simplify purchasing and inventory control.

Features

  • One piece screw and washer assembly
  • Able to provide a larger bearing surface area than a one piece cold formed part
  • Able to provide a screw and washer assembly with dissimilar material

Benefits

  • Easier and quicker production line assembly over a separate washer and screw
  • Combines two part numbers into one
  • Provides a more consistent torque/tension relationship
  • Distributes the load over a large bearing surface reducing potential joint yielding

Specifications

  • Available for M1.2(#0) through M20(¾) thread sizes

Washer Types Available

  • Conical
  • Square Dome
  • Crest Cup
  • Split Lock
  • Wave
  • External Tooth
  • Internal Tooth
  • Combination External/Internal Tooth
  • Flat
  • Countersunk
  • Non-Metallic
  • Square
  • Sealing
  • Multiple
  • Special
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