Precision Roller Chain, Components and Connecting Back links
The precision steel roller chain is actually a remarkably efficient and versatile suggests of transmitting mechanical 
electrical power, which, during the field of industrial applications, has pretty much entirely superseded all other types of chain previously utilized.
Outer Hyperlink - Press Fit (BS/DIN) Riveting Pin Hyperlink - Press Match (ANSI)
For use with all sizes and types of chain exactly where optimum security is preferred. The website link is provided with bearing pins riveted into 1 outer plate. The other outer plate is an interference fit about the bearing pins, the ends of which really should be riveted more than after the plate is fitted. Press fit connecting links should really only be used after; new back links must be employed to exchange dismantled back links. (See 'Riveting Chain Endless' for full instructions).
Connecting Link - Slip Match (BS/DIN/ANSI)
A connecting hyperlink provided with two connecting pins riveted in to the outer plate. The outer plate is actually a clearance fit over the connecting pins and is secured in position by a split pin with the projecting end of each connecting pin.
Connecting Link - Slip Fit (BS/DIN/ANSI)
Applied on quick pitch chains only. Supplied with two connecting pins riveted in to the outer plate, the clearance match connecting plate becoming secured by way of a spring clip, No. 27, which snaps into the grooves from the pins.
