- Williamsburg, Virginia, United States
- US $3.92
- Feb 12th
I am cleaning out my father's garage and he has a bucket full of these oval head, slotted, 45 degree countersunk, 1/4-28 thread brass machine screws. The overall length is 2.063 inches , thread length is 1.824 inches, diameter of thread portion is 0.246 with 28 threads per inch, head diameter is 0.499 inches. I estimate the counter sink angle at 45 degrees.