• Drive Problems
  • Recess Fill (internal recess)
  • Rusting (internal recess)
  • Sorting (internal recess)
• Ergonomics
  • Cross Threading
  • Hard to Drive w/ Crimp Nut
  • Paint Clearing/Cross Threading
  • Poor Drive (internal recess)
  • Seating Torque
  • Washer Locking
• Lower Cost
  • Expensive Ball Studs
  • High Cost Machining
  • High Cost Components
  • Recess Fill
• Problems with Plastic
  • Back out
  • BSR
  • Direct PT replacement
  • Eliminate Brass Inserts
  • High Heat
  • Plastic Creep
  • Stripping
• Threading Problems
  • Cross Threading
  • Paint Clearing/Cross Threading

Fasteners loosen due to tolerance clearance

The SinuLOC™ curved thread fastener eliminates the standard clearance in threads.

SinuLOC™ curved thread fastener creates a mechanical interference with its internally threaded mating component and eliminates the need to use nylon patches, adhesives, lock washers and lock nuts

SinuLOC™ Applications

      -Electronics
      -Structural components
      -Suspension
      -Drive Train
      -Assemblies
      -Seating
      -Instrument Panels
      -Routing
      -Attachments

Made with WERCS Tooling
ITW’s WERCS Tooling has revolutionized the design and manufacturing of threaded products. WERCS Tooling allows for the formation of unique geometries on thread products.

SinuLOC™ Benefits

COST SAVINGS - SinuLOC™ curved thread fastener is applied during the thread rolling process before heat treating and plating. This eliminates costs incurred by secondary manufacturing processes, the need to ship unfinished goods and downstream quality control

MECHANICAL INTERFERENCE FIT - SinuLOC™ curved thread fastener creates a mechanical interference on the thread flanks by increasing the pitch diameter which fills the thread clearance

UNIVERSAL PERFORMANCE - SinuLOC™ curved thread fastener can be used on any standard pitch diameter threaded fastener to prevent joint loosening

TORQUE TENSION - SinuLOC™ curved thread fastener maintains the torque tension relationship of standard machine thread

SERVICEABILITY - SinuLOC™ curved thread fastener offers the ability to be installed and uninstalled multiple times

ERGONOMICS - SinuLOC™ curved thread fastener allows for maximum free-spinning by positioning the interference fit where it is needed

ENVIRONMENT - SinuLOC™ curved thread fastener is resistant to vibration, high heat (1200°F), and lubricants and does not create exposed abraded surfaces which cause corrosion

Why SinuLOC™ Works

SinuLOC™ curved thread fastener is the integration of a sine wave at a specified location on an externally threaded fastener which is a result of increasing the fastener’s pitch diameter. The addition of the sine wave creates a mechanical interference between the internal and external threads to simply stay tight.