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Issue 102
Fastener Basics: The Importance of Torque

Torque is the most commonly used measure of bolted joint integrity, and for many  non-critical joints it will suffice. Tightening a joint creates an energy transfer process in which torque energy transforms into clamp load as the coils of the threads draw the parts together. Clamp load holds the assembly together during use. Too little torque will not produce enough clamp load to hold the assembly together, and too much torque could fail the fastener or crush the parts...

How to: Hand Torque Wrench Calibration

Ensuring the proper operation of assembly tools is an important part of building quality assemblies. Many quality operating systems require periodic verification of the performance of hand torque wrenches. All it takes is the right set of equipment: 
  • Stationary torque transducer
  • Electronic readout device 
Simply connect the torque transducer to the readout and do a zero balance to calibrate as needed. Position the drive of the wrench onto the fitting of the torque transducer allowing enough room to be able to pull the wrench through its release point or reach the desired dial indicator point. Then pull the wrench until the clutch releases or the dial indicator reaches the desired setting. After 5-10 cycles, compare the data between the two devices. If needed, adjust the wrench to bring it within specification and re-try to confirm the adjustment was correct. A quick calibration of your hand tools will provide the assurance that your assembly process is in spec.
Industry News

LabMaster Software Update
  • A software update for RS LabMaster users will be available on April 2. The application will now be compatible with 64-bit PCs and laptops currently running the LabMaster fastener testing software. Email us for details.
Fastener Fair USA to Debut
  • The Huntington Convention Center in Cleveland OH will be the site of the inaugural Fastener Fair USA event on April 11-12, 2018. Register to attend.
Fastener Technology Seminar and Webinars
  • The RS Technologies Team invites you to join us for a one-day seminar in Cleveland, OH on May 10th. Email us for details.
  • In addition to the onsite seminar, RS will be offering a series of 30 minute webinars in April and May - stay tuned for an email with all the details. Email us with questions today!
    • Part 1: Torque Tension Basics
    • Part 2: Fastener Assembly
    • Part 3: Fastener Testing
 
Meet PCB Piezotronics

As you may know, RS Technologies is part of a larger organization. PCB Piezotronics, Inc. is a global leader in the design and manufacture of force, torque, load, strain, pressure, acoustic and vibration sensors, as well as the pioneer of ICP ® technology. This instrumentation is used for test, measurement, monitoring, and feedback control requirements in automotive, aerospace, industrial, R&D, military, educational, commercial, and OEM applications. We invite you to visit www.pcb.com to learn more!
Sincerely,
Dave Miller

Fastener Technologies Expert
RS Technologies -  PCB Piezotronics
+1 716 684 0002 | dmiller@pcb.com | www.pcb.com
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