Patent ID: 7462043

Claim:
An electrical connector element ( 6 ) in particular for making frame connections on frames ( 5 ) or casings ( 2 ) of electrical apparatuses ( 1 ), comprising: a corrosion resistant body having a head portion ( 8 ) of a first diameter, a front surface ( 10 ), a back surface ( 12 ) comprising a serration ( 121 ), and a threaded bolt portion ( 9 ) of a second diameter extending from the back surface ( 12 ) and aligned coaxial to a longitudinal axis ( 15 ); said first diameter being larger than the second diameter; an annular contact rib ( 16 ) provided on the back surface ( 12 ) protruding in axial direction and surrounding said threaded bolt ( 9 ); said contact rib ( 16 ) being located coaxially to the longitudinal axis ( 15 ); and a threaded bore ( 20 ) extending into the head portion ( 8 ).