| Mild steel screws with round single slot recess heads, normally only available in old british threads BSF, Whit or BA |
| Stock Code | Item |
| UNC.MCRS.10/32X13/4.Z | 10/24 UNC x 1 3/4 Rnd Slt M/C Zinc |
| UNC.MCRS.3/8X1.SC | 3/8 UNC x 1 Rnd Slt M/C S/C |
| UNC.MCRS.1/2X11/2.SC | 1/2 UNC x 1 1/2 Rnd Slt M/C S/C |
