Simpson Structural Screws SD9112R100 No.9 by 1-1/2-Inch Structural-Connector Screw, 100-Pack

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In computing, electrical connectors are considered a physical interface and constitute part of the physical layer in the OSI model of networking. Twist-on wire connectors (e.g. wire nuts) – used in low-voltage power circuits for wires up to about 10AWG Screw terminals are used extensively in building wiring for the distribution of electricity - connecting electrical outlets, luminaires and switches to the mains, and for directly connecting major appliances such as clothes dryers and ovens drawing in excess of 15 amperes. inline or cable connectors permanently attached to a cable, so it can be plugged into another terminal (either a stationary instrument or another cable) [5] Foreman, Chris, "Sound System Design", Handbook for Sound Engineers, Third Edition, Glen M. Ballou, Ed., Elsevier Inc., 2002, pp.1171–72.

Printed circuit board (PCB) mounted screw terminals let individual wires connect to a PCB through leads soldered to the board. Screw terminals are low in cost when compared to other types of connectors, and can be readily designed into products for circuits carrying currents of from a fraction of an ampere up to several hundred amperes at low to moderate frequencies. The terminals easily can be re-used in the field, allowing for the replacement of wires or equipment, generally with standard hand tools. Screw terminals usually avoid the requirement for a specialized mating connector to be applied to the ends of wires. a b Horowitz, Paul; Hill, Winfield (1989). The Art of Electronics (2nded.). Cambridge University Press. ISBN 0-521-37095-7.This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Ribbon Cable Interconnect Solutions" (PDF). TE Connectivity. April 2012. p.30 . Retrieved 1 July 2019. By its design the traditional failure mode in tin plated connections, fretting corrosion, is prevented .

SparkFun uses SMA-type connectors on a few boards that need a 50 Ohm impedance connection to an external antenna ( GPS, Bluetooth, cellular, Nordic, and XBee). However, some of these boards use different genders and polarities of the SMA connector. Therefore, we need different antennas to match the specific gender or polarity of the RF connections. Alternatives to screw terminals include spring terminals (a.k.a. "push-in", "cage-clamp", or "poke-home" connectors). Spring terminals work in a similar fashion as screw terminals. However, instead of tightening a screw to make a connection with piece of wire, a spring clamps together pieces of metal together. a b c "Connectors: Failure Mechanisms and Anomalies" (PDF). Naval Sea Systems Command . Retrieved 1 July 2019.

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Splice or butt connectors (primarily insulation displacement connectors) that permanently join two lengths of wire or cable The M12 connector, specified in IEC 61076-2-101, is a circular electrical plug/receptacle pair with 12mm OD mating threads, used in NMEA 2000, DeviceNet, IO-Link, some kinds of Industrial Ethernet, etc. [16] [17]