https://www.rettigs.com/fasteners/socket-head-screws/socket-head-cap-screws/inch-sizes-black-oxide-plating/1-420x3-4shcs
1/420X3/4SHCS | SHCS Fasteners
shcsfasteners
https://www.rettigs.com/fasteners/socket-head-screws/socket-head-cap-screws/inch-sizes-black-oxide-plating/1-220x11-4shcs
1/220X11/4SHCS | SHCS Fasteners
shcsfasteners