The ECA-310 industry-standard are #12-24 X 5/8 & #10-32 X 5/8. The more common screw for pre-threaded racks is #12-24 X 5/8 which is what ICC uses for cable management systems and accessories. The pan head size is 0.42” with a full length of 0.77”. ICC only offers #12-24 X 5/8 screws with cable management panels or in packs of 25 (PN: ICACSS01BK). ICC does not offer any #12-24 X 5/8 screws with any cable management racks.