The rivet pin range by HI-SHEAR CORPORATION, subsidiary of LISI AEROSPACE, offers a versatile solution for most of structural assemblies. They consist a very common type of threaded fastener used for clearance, transition and low interference fit throughout the airframe (metallic and composite), from wings to fuselage, in engine fairings, and more. Easily installed from one side, by one person with conventional tooling.
HI-SHEAR rivet pin product portfolio includes the original HI-LOK™ (HL™) system, the latest HI-LITE™ (HST™) pins with an improved recess and HI-TIGUE™ (HLT™) pins with improved fatigue benefits. They can be used in shear and/or tension applications on plain or sloped surfaces and feature controlled preload, a wide range of sizes and variety of materials and coatings for installation in all structures.
Most fasteners are mainly loaded in shear. That should be the only way for rivets as their tension capability is relatively low. Whenever there is a substantial tension load in a fastener, a threaded bolt should be used.
HI-LOK™ (HL™) is the original and versatile solution, a simple two-part fastener for strong and reliable assemblies. HI-LOK™ pins are commonly used in applications requiring high tensile strength in extreme environments. Consistent torque on installed fasteners is achieved through the integrated functions of the system working together. A carefully regulated breakoff groove in the self-locking HI-LOK™ collar (separately presented) provides uniform preload values by separating when the correct torque level is reached. This controlled preload of each HI-LOK™ in the structure improves the fatigue life of the airframe significantly when compared to other fastening systems, including swaged collar type. HI-LOK™ pins and HI-LOK™ collars offer extremely precise dimensions making these fasteners commonly used in space, military, and commercial aviation application. They are both threaded and require common installation tools making HI-LOK™ fasteners easy to install and remove.
HI-LITE™ (HST™) rivet pins are direct descendants from their original HI-LOK™ series counterparts but significantly lighter as they are made from 6Al-4V Titanium alloy resulting in improved weight saving. Combined with HI-LITE™ nuts and collars (separately presented), they provide up to 13% weight saving compared to the previous HI-LOK™generation. Both HI-LOK™ and HI-LITE™ rivet pins are also available with ASTER improved recess (HSTR pins) that prevents failure during the assembly process, especially suited for clearance fit assemblies of composite structures.
HI-TIGUE™ (HLT™) pin series has improved fatigue benefits by combining the hole-improvement qualities of the HI-TIGUE™ pins and the consistent preloading qualities of the HI-LOK™ collars.
Additional information is available in Product Description section and the supplied documentation.
