Mounting screw for same

Listed on the following equipment:
Monark - 731 - black
Monark - 731 White
Monark - 815e (1986)
Monark - 817e - Black
Monark - 817e White
Monark - 818e (1987-1991)
Monark - 818e (1992-present)
Monark - 818e S/N P94135 and up
Monark - 824
Monark - 834e
Monark - 839e
Monark - 874e
Monark - 884e
Monark - 894e (After SN WBK280889)
Monark - 915
Monark - Ergomedic - 894 E (After SN WBK285390H)

* Images may not be identical to part.