EXTERNALLY THREADED FASTENING SYSTEMS

FRECCIA_1FRECCIA_2

SEMS

Our captured washers improve productivity, eliminate lost, dropped or forgotten washers and simplify purchasing and inventory control.
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®
    External Tooth
    Internal Tooth
    Combination External/Internal Tooth
    Flat
    Countersunk
    Non-Metallic
    Square
    Sealing
    Multiple
    Special
  • Features
    Large head-to-shank ratios possible
    Uninterrupted grain flow
    Parts can be formed to net or near-net shape, which requires fewer secondary operations to achieve the final shape
  • Benefits
    Improved strength and reliability through work hardening and an uninterrupted grain flow
    Improved surface finish over screw-machined components
    Reduced scrap rates
    High production rates
    Increased strength and lowered costs over screw machined components
  • Specifications
    Available for M0.5(#0000) through M38(1½) thread sizes
  • Materials Available
    Low Carbon Steel
    Medium Carbon Steel
    Alloy Steel
    Tool Steel
    Copper
    Brass
    Bronze
    Aluminum
    Stainless Steel
    Titanium
    Waspalloy
    Inconel
    Others available on request