This Screw Set, Cap M4*12 Ni+Pw 4*9*0.8 (20 pcs) is suitable for Roland RS-540 printers. This is the original Roland part (number 31049117).
 
Printer compatibility
Roland AJ-1000
Roland AJ-1000i
Roland AJ-740
Roland AJ-740i
Roland CJ-540
Roland FJ-540
Roland FLJ-300
Roland FP-740
Roland GX-300
Roland GX-400
Roland GX-500
Roland RS-540
Roland RS-640
Roland SC-500
Roland SC-540
Roland SC-545ex
Roland SJ-1000
Roland SJ-1045ex
Roland SJ-540
Roland SJ-640
Roland SJ-645ex
Roland SJ-740
Roland SJ-745ex
Roland SP-300
Roland SP-300i
Roland SP-300v
Roland SP-540i
Roland SP-540v
Roland VP-300
Roland VP-300i
Roland VP-540
Roland VP-540i
Roland GX-640