The fatigue capacity of a bolted joint is very small, as compared to its static capacity. To improve fatigue resistance, designers can increase the thread capacity and decrease the alternating stresses at the threads. To increase the thread capacity, the Nord-Lock Group — a provider of secure and customized bolting solutions — recommends using a…
What is resistance welding?
In resistance welding, the metals are heated by an electrical current and parts are joined by pressure. Copper electrodes are placed on either side of the pieces to be joined. The electrode tips contact the metal sheets and push them together for a short period of time to ensure the weld tip force is reached…
Auto Bolt expands with new packing & shipping warehouse
Auto Bolt, a cold-heading bolt manufacturer since 1948, is expanding its facility. The company recently announced the acquisition 30,000-sq-ft. building next to its manufacturing plant in Cleveland, Ohio, providing a dedicated packaging and shipping warehouse. Auto Bolt specializes in low and high-volume performance and commercial fasteners for various industrial, distribution, and original equipment markets and…
How to select the ideal wedge lock
Written by Tim Bretz, EC&IC division manager Elma Electronic Mounted directly to a printed circuit board (PCB), a card retainer — also called a wedge lock — securely holds the board in place. It’s used to reduce the risk of damage to the electronics within an embedded system and is often overlooked. Most applications…
EFC International expands product line with air-filter hardware components
EFC International, a global supplier of specialty engineered fasteners, announced the addition of air-filter clips and specialty air-filter fasteners to their product line. The new components are from Springfield Spring & Stamping, a manufacturer of standard and custom air-filter holding frame clips in the United States. The product line is complementary to EFC’s current HVACR…
Herrmann Ultrasonics adds communication and ergonomics to ultrasonic welding
Herrmann Ultrasonics has provided a new dimension of communication and ergonomics in ultrasonic welding with the introduction of the new HiQ product line. The HiQ G2 is the first series-produced premium ultrasonic welding system to possess the flexibility of a customized machine. The minutely revamped controller software connects the operator with the machine. All machine…
Rockford Fastener joins EFG
Elgin Fastener Group (EFG), a North American provider of system-critical engineered fastening solutions, announced that it has acquired Rockford Fastener, a manufacturer of specialty fasteners well-known for its quality and customer responsiveness. “The combination of Rockford and EFG creates an exciting opportunity for our company, for our customers, and for our shareholders,” said Brian Nadel,…
What are pressure adhesives?
Written by Dr. Jody Muelaner Pressure adhesive, also known as pressure-sensitive adhesive (PSA) or self-adhesive, flows between the surfaces being bonded. If the surfaces are smooth enough to get close together, the viscosity of the thin film combined with molecular interactions, form a strong bond. This is the type of adhesive used on self-adhesive tapes…
MiddleGround Capital acquires EDSCO Fasteners
MiddleGround Capital, a private equity firm that makes control investments in North American middle market B2B industrial and specialty distribution companies, announced that it has fully completed its acquisition of EDSCO Fasteners. EDSCO is a manufacturer of mission-critical anchoring systems for power transmission poles and other large steel structures. EDSCO’s anchoring systems are predominantly embedded…
What is a lock nut and how does it work?
Written by Dr. Jody Muelaner A lock nut is a nut that resists loosening under vibration and torque. There are many types of lock nut but they can be broadly divided into those that use friction to prevent loosening and those that offer some form of positive locking device. Friction lock nuts Lock nuts…