Hexagon Head Screw, 5/16-18 x 1

Ref. H-D : 4017

As per pictures

Brand :  Harley-Davidson

Type :  New

Fits on : 

The part is compatible with the following motorcycles :

Sidecar 
Sidecar : CLE Attachments (1979-1980), CLE Attachments "Not Sold With Classic" (1981-1984), CLE Attachments "Sold With Classic" (1981-1984), CLE Attachments "Sold Separately For Use With Classic" (1981-1984). 

Touring 
Electra Glide : FHL80 (1980), FL (1941-1948), FL Duo-Glide (1958-1964), FL Electra Glide Police (1975), FL Hydra-Glide (1949-1957), FL Police (1973-1974), FL80 Electra Glide (1980), FLH Police (1983-1984), FLH Electra Glide (1971-1983), FLH Duo-Glide (1958-1964), FLH-1200 Electra Glide (1970-1980), FLH-80 Electra Glide (1978-1980), FLH Anniversary Electra Glide (1978), FLHR Road King (1993-2006), FLHRC Road King Classic (1998-2008).