Tamper-resistant or security fasteners are often used to prevent unauthorized entry. They are often non-removable or require a special tool to remove them. Higher-quality tamper-proof fasteners have hardened heads, making it difficult to form a new drive slot with a file.
A major cause of failures in metal fasteners is electrochemical corrosion (rust), or so-called galvanic action. Engineers and designers alike can greatly reduce this type of corrosion by specifying fasteners made of the proper materials or with the right coatings....More
Bolts and screws can be outfitted with a variety of different head styles. Which style an engineer specifies depends on several factors: the type of driving or installation equipment used, the type of joint load, and the external appearance desired.
The next round of products includes a thermal interface material that also provides EMI shielding; a fiber-optic, linear-positioning sensor that doesn't impede MRI imaging; and a stepper-motor driver IC that reduces noise when operating at low motor speeds.
Machine Design's Products of the Week range from contactless rotary sensors , to water-leak-detection fluorescent dye . Don't miss out on these products that may hold the key to improving your business or products.
The PFC2 and PFS2 self-clinching captive-panel screws from PennEngineering (www.pemnet.com), Danboro, Pa., provide secure and permanent attachment for thin-metal assemblies. The fasteners can also.......More
Engineers from the Pacific Northwest National Laboratory (PNNL) have improved friction stir welding (FSW) so that it can now join aluminum sheets of varying thicknesses, a key capability for making welds that are strong in places where needed, yet light overall....More