Plastic Draft Gearboxes & Lids included with 20-Series (#23, 24, 25 short shank). Also works with short shank Whisker® Couplers.
10 pair per package
2-56 screws are the most commonly used for center hole.
0-48 or 0-80 screws are used for side holes.
Screw length will very depending on the mounting situation.