A battery terminal includes a terminal main body and a protector to be mounted to the terminal main body, wherein the terminal main body includes an operating section for clamping and tightening the battery post, and the protector includes a movable section provided with a contact section to be brought into contact with the upper surface of the battery main body, and a displacement section to be freely displaced between a covering position for covering the operating section and a retracted position with an external force applied on the contact section, wherein in the retracted position, the displacement section is retracted from the covering position, and wherein the displacement section is displaced to the retracted position by pressing the contact section against the upper surface of the battery main body so that the access to the operating section is allowed.

A tap plug for engaging a conductor lug and a stud is provided. The tap plug includes a housing, a first member, and a second member. The housing has an inner bore defining a longitudinal axis. The first member is in the inner bore and is rotatable with respect to the housing about the longitudinal axis. The first member has an external thread at a first end, where the external thread engages the conductor lug. The second member is rotatable with respect to the housing about the longitudinal axis and has an internal thread at the first end. The first end is open so that the internal thread can engage the stud.

A clamping screw device has a clamping screw extending in an axial direction and including a screw head that is rotatable, a screw body, and a screw foot. The clamping screw device has an electrical insulation on an outside of the screw head. The electrical insulation accommodates an electromagnetic shielding and/or a seal.

A terminal unit 1 includes: a terminal fitting 10; and a holder 50. The terminal fitting 10 includes a connection portion 10A in which a bolt insertion hole 10C is formed, and the holder 50 includes a main body portion 50A that is configured to be attached to the connection portion 10A and a detent 50B that protrudes from the main body portion 50A and prevents the terminal fitting 10 from rotating.

A terminal unit 1 includes: a terminal fitting 10; and a holder 50. The terminal fitting 10 includes a connection portion 10A in which a bolt insertion hole 10C is formed, and the holder 50 includes a main body portion 50A that is configured to be attached to the connection portion 10A and a detent 50B that protrudes from the main body portion 50A and prevents the terminal fitting 10 from rotating.

There is provided a terminal for an electrical power cable that includes a conductive clip, a terminal block, and a set screw. The clip resides in the terminal block and includes a plurality of openings sized to receive low voltage connectors, such as spade connectors. The openings in the clip are arranged to organize the spade connectors and their respective pigtail connections. The location and orientation of the clip and the spade connectors is such that, when the set screw is installed in the terminal block, force is applied by the set screw onto the clip. The clip compresses and secures the spade connectors to the terminal block.

An electrically contacting fastening device has a threaded bolt and a nut, between which an electric contact element can be arranged. The threaded bolt has a contacting portion for creating planar contact with the contact element, and a threaded portion. The nut can be secured on the threaded bolt by way of the threaded portion and at an end face has a contacting area for creating planar contact with the contact element. The threaded portion of the threaded bolt is provided with a lubricant coating and the contacting portion of the threaded bolt, the contact element and the end-face contacting area of the nut are permanently free of lubricant.

An electrically contacting fastening device has a threaded bolt and a nut, between which an electric contact element can be arranged. The threaded bolt has a contacting portion for creating planar contact with the contact element, and a threaded portion. The nut can be secured on the threaded bolt by way of the threaded portion and at an end face has a contacting area for creating planar contact with the contact element. The threaded portion of the threaded bolt is provided with a lubricant coating and the contacting portion of the threaded bolt, the contact element and the end-face contacting area of the nut are permanently free of lubricant.

A mechanical grounding clamp including a body, having an upper plate defining a threaded hole therethrough and having an outer surface, a lower plate spaced apart from the upper plate and having an inner surface, and a connecting plate connecting the upper plate to the lower plate, a fastener mateable with the threaded hole in the upper plate and having a proximal end and a distal end, the distal end extendable through the threaded hole of the upper plate and toward the inner surface of the lower plate. There may be a nut on the fastener for driving toward the upper plate to secure a grounding conductor to the body.

A contact for an electrical connector includes a contact section and a connecting section. The connecting section is separable from the contact section.