HSTOOLING (formerly HI-SHEAR TOOLING) is a brand of ZEPHYR Manufacturing Co., Inc. (aka Zephyr Tool Group) designing and manufacturing the highest quality aerospace and industrial assembly tools and tooling systems.

HSTOOLING product porfolio includes installation, assembly and repair tools for Aerospace (air drills, riveters, both conventional rivet hammers and compression riveters, specialty fastener installation and other tools and accessories).

HSTOOLING ULTRALITE® compression riveters include different models covering different capacity requirements for aluminum and steel.They are  offered in Alligator jaw and C-Yoke models and feature ergonomic design, weight reduction vs. comparable-force models, high-strength forged jaws and C-yokes, precison bearings and shafts.  The new 702 and 702T alligator models posess outstanding force-to-size ratios. 

HSTOOLING Air Driver Assemblies are designed specifically for installing HI-SHEAR CORPORATION HI-LOK™ (*), HI-LITE™,  and HI-LOK™/HI-TIGUE™ pin and collar fastener combinations. They come in a variety of sizes and configurations, to drive fasteners in both open and restricted-access areas. Compact, lightweight, fast and reliable HSTOOLING tooling systems generate low noise compared with conventional riveting, require minimum employee training, and are designed to operate at a normal factory air pressure of 90 psi with 1/4 or 3/8 inch air lines.

Installation/removal tools for Hi-Lok™ or Hi-Lok™ style fasteners made by Jiffy Air Tool and USATCO are also offered. Pleae refer to the respective product presentations.

For additional information please refer to the supplied documentation or contact us.

(*) The HI-LOK™ fasteners from HI-SHEAR CORPORATION, subsidiary of LISI AEROSPACE, are the second most used fasteners in aircraft structural assembly after the solid rivets MS20470 and MS20426. The HI-LOK™ fastener system includes a rivet pin (similar to a screw but with additional advantages) and a collar (similar to a nut).

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.

Νuts and collars by HI-SHEAR CORPORATION, subsidiary of LISI AEROSPACE, are designed to fit with their related HI-LOK™/HI-TIGUE™ and HI-LITE™ pins  (separately presented) forming the respective fastener system. HI-LOK™ nuts and collars are designed to fit HI-LOK™ & HI-TIGUE™ pins. HI-LITE™ nuts and collars are designed to fit HI-LITE™, PULL-IN™, PULL-STEM™ & TAPER HI-LITE™ pins.

With a wide range of shapes, materials and coatings, they are suited for most of structural assemblies and are commonly used in the aerospace industry in tension and shear applications. Collars’ wrenching element is designed to break-away at a controlled preload. It has been tested over time and has proven its reliability when installed with non-torque-controlled tools. Main features of nuts and collars include:

- controlled preload

- wide variety of materials and coatings for installation in all structures

- suitable for shear or tension applications, with captive washer, self-aligning or self-sealing options

- limited access installation, using conventional tooling

- designed with a counterbore to fit nominal and oversized pins

- nuts allow customized torque and preload & low height design for low access areas

Please refer to the supplied documentation for additional information.

U.S. Air Tool Company Inc. (USATCO) is a manufacturer and worldwide distributor of high quality tools for the aviation industry. USATCO offered product range includes aerospace/aviation riveting as well as sheet metal and composite tools and accessories ( rivet squeezers, custom yokes, assembly tools and accessories, angle drill extensions, blind riveters, rivet guns, composite tools, and more. Their installation & removal tools for HI-SHEAR (Hi-Lok™, Hi-Tigue™,Hi-Lite™) fasteners (*) include straight and 20° offset ratchet wrench pneumatic driver assemblies, straight and offset mini pistol grip pneumatic driver assemblies, pneumatic installation & removal kits, ratchet & socket kits, reversible ratchet wrench installation kits, pin protrusion and grip gauges and more. USATCO Hi-Lok™ Pneumatic Installation & Removal Kit includes: Pneumatic 1/4" Square Drive Ratchet (with through hole), nine Hi-Lok™ Sockets (5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8" & 7/16"), four Hi-Lok™ Collar Removal Sockets (5/32", 3/16", 1/4" & 5/16"), three Hex Keys (1/16", 5/64" & 3/32") & fitted plastic case.

Installation/removal tools for Hi-Lok™ or Hi-Lok™ style fasteners made by  HS Tooling and Jiffy Air Tool are also offered. Pleae refer to the respective product presentations.

For additional information please refer to the supplied documentation or contact us.

(*) The HI-LOK™ fasteners from HI-SHEAR CORPORATION, subsidiary of LISI AEROSPACE, are the second most used fasteners in aircraft structural assembly after the solid rivets MS20470 and MS20426. The Hi-Lok™ fastener system includes a rivet pin (similar to a screw but with additional advantages) and a collar (similar to a nut).

JIFFY® AIR TOOL is a market leading solutions provider specializing in professional grade hand held, limited access, pneumatic drilling and fastener installation tools for the aerospace and aircraft industries. Manufactured in the USA, their product portfolio includes an extensive line of specialty hand-held pneumatic tools designed and built for easy, trouble-free operation and reach into difficult areas. Their tools are widely used by airframe assembly, maintenance, repair and overhaul facilities.

Modular Drill Motors & Attachments (JMD)

JIFFY® AIR TOOL pioneered the “Modular Tool” platform for drill motors and attachments (JMD). JIFFY® motors can accept a wide variety of drill attachments to meet limited access requirements.JIFFY® Pistol Grip Straight style drilling tools are offered in models with forward running, reverse running and reversible functions, safety trigger option, 250 – 20,000 RPM, and 0.3 – 1.5 HP.  Available Thread Sizes: 1/4-28, 10-32, 9/32-40, 5/16-24, 3/8-24 and 7mm Collet.

Modular Fastener Installation Tools (JMI)

With JIFFY® modular fastener installation platform installation motors can accept a wide variety of install attachments to meet limited access requirements. The latter are available in 17° indexable or fixed, 20° indexable or fixed, “L”, and straight install type offered in various series correlating to the torque capacity of the fastener. Their versatility is further enhanced by the three offered drive styles: a socket and key system,a flush gear with a key and a hex through with no key control to allow access to confined space installations.

In addition to the modular installation tools, ratchet install tools in straight, 17° and 20° head styles are also available. Their pneumatic ratchet wrenches can be used for HI-SHEAR fastener (*) installation quickly, easily, and efficiently. Their new & improved spring loaded hex tip holder allows the use of special hex tips that will hold the HI-LOK™ style fastener in place when installing non-interference fasteners. With the new & improved design, hex tips are easier than ever to change and can literally be changed in just a few seconds.JIFFY®  sockets and hex tips (sold separately) can be used with these wrenches.

For additional information please refer to the supplied documentation or contact us.

 (*) HI-SHEAR CORPORATION Fastening System includes HI-LITE™, HI-LOK™ and HI-LOK™/HI-TIGUE™ pin and collar fastener combinations. The HI-LOK™ fasteners are the second most used fasteners in aircraft structural assembly after the solid rivets MS20470 and MS20426. The HI-LOK™ fastener system includes a rivet pin (similar to a screw but with additional advantages) and a collar (similar to a nut). Pneumatic installation/removal tools for HI-LOK™ or HI-LOK™ style fasteners are also offered by  HS Tooling and U.S Air Tool Co. (USATCO). Please refer to the respective product presentations.