Heli-Coil inserts are precision formed screw thread coils worked into a diamond shape. The resultant surface finish is a mirror-like 8-16 micro inches. This wire is then wound into a spiral coil which when installed into Heli-Coil tapped holes, provides permanent conventional 60 degrees internal screw threads.

• Stonger Assemblies
  Tapped threads are strength¬ened because the inherent flexibility of the insert provides a more balanced distribution of dynamic and static loads throughout the length of thread engagement. This flexibility also compensates for variation in lead and angle error allowing each coil to carry its share of the load



• No Thread Wear
  Thread life is dramatically increased even after repeated assembly and disassembly, because the insert hardness and surface finish practically eliminate erosion of the thread form due to friction.



• Corrosion Resistance
  Under normal environmental conditions, Heli-Coil inserts minimize galvanic action within the threaded assembly because of their superior cor¬rosion resistance.



• Design Flexiblity
  Bolt tensile strength can be balanced against parent mate¬rial shear strength, assuring bolt failure rather than parent material damage. Five insert lengths are available in each thread size.



• Eliminate Stress
  Virtually no stress is intro¬duced into the parent material because there is no staking, locking, swaging or keying in place — the outward spring-like action of the insert holds it in place.



• Minimize Space & Weight
  Heli-Coil inserts allow use of smaller bosses, flanges and fasteners than any other insert. Heli-Coil inserts can generally be incorporated in existing designs, where no provision has been made for an insert, without increasing boss size.



• Minimize Total Cost
  Cost savings abound. Lower insert cost, lower installation cost, and Heli-Coil inserts provide design flexibility by allowing a wide choice of parent materials while main¬taining maximum threaded assembly strength.



• True Clamping Torque
  Maximum clamping action and bolt tension are assured with minimum wrench torque, be¬cause of the mirror-smooth surface finish of Heli-Coil inserts.



• Wide Temperature Range
  Heli-Coil stainless steel inserts can be used in temperatures ranging from-320°F to + 800°F.



• Quality & Reliability
  Stringent Quality Assurance and Engineering Standards are rigidly enforced in all phases of the manufacturing process. This assures integrity of your product design.



• High Production
  Heli-Coil inserts are available mounted on plastic strips and wound onto reels (500 or 1000 inserts per reel). With power installation tooling, use of strip feed inserts will substantially increase installation rates by minimizing handling.



• Universal Acceptance
  Heli-Coil Standard and Screw-lock Inserts are the original — and have an extensive background of tension, torque, shear, vibration and fatigue tests conducted by American industry's leading companies as well as the U.S. Military. Successful applications in the fields of aviation, electron¬ics, industrial, automotive and military equipment provide a wealth of experience and confi¬dence in the performance and reliability of Heli-Coil inserts.

• UNC #1 through 1-1/2
• UNF #2 through 1-1/2
• Metric Coarse M2 through M39
• Metric Fine M8 through M39

• Positive self-locking torque, complying with NASM8846 and MAI565.
• A resilient locking mechanism (applies to Heli-Coil screw-lock inserts) that grips the bolt and prevents it from loosening under vibration or impact.
• Repeated assembly and disassembly without appreciable loss of self-locking torque.
• Savings in space, weight and money, through the elimination of lock wiring, lock nuts, lock washers, chemical compounds, plastic pellets/patches and other locking mechanisms

• Similar to Screw-Lock except higher prevailing torque compensates for reduced friction in highly lubricated applications.
• Ideal for higher vibration applications
• Approximate 40 % increase in prevailing torque levels.
• Available in #10 through 3/8" UNF only
• Meets AS3094, 3095, 3096, 3097

• Highest prevailing torque insert available.
• Enables use of threaded rod for space-saving stud applications.
• Allows for any class fit of threaded rod.
• Eliminates inconsistencies caused by interference-fit studs.
• Available for both straight and step studs, #10 through 1/2" UNC and UNF.
• Meets AS3080, 3081, 3082, 3083

• Standard, general purpose material
• Stocked in most sizes
• Ideal for original equipment applications, repair, and over¬haul

• Used in areas exposed to high temperatures
• Typical uses: gas turbine engines, nuclear applications, well drilling
• Non-magnetic

• Ideal for salt water applications
• Non-magnetic
• Excellent electrical conductivity

• Superb galling resistance
• Compatible with stainless steel screws
• Ideal for use in vacuum environments
• Requires no additional coatings or plating
• Particle free
• Non-magnetic

• Superior strength-to-weight ratio
• Corrosion resistant
• Excellent low temperature