Special Pinch Bolt holding the speedometer drive into the gearbox casing. Not available new. Use 107746SH or modify Screw SH505121 as described in 'More About This Part'.

This special bolt has an overall length of 1.5" (38.1mm), has a very short shank of just 0.5" (12.7mm) and a plain un-threaded portion at the end 0.25" (6.35mm) long by 0.25" (6.35mm) diameter. This plain 'nose' as we call it engages with the speedometer drive outer boss to locate it. 

As this special bolt is not available new, we can only, when available, supply second hand parts but if a second hand part is not available a screw of suitable length can be altered to suit by machining (or filing if a lathe is not available) the plain portion of the end of screw SH505121 to the dimensions above. See below  

This part appears on the following Triumph Catalogue Plates