Square & Rectangular Machine Keys by U.S. (Imperial) Diameter
#1 Square & Rectangular Machine Keys
#3 Square & Rectangular Machine Keys
#5 Square & Rectangular Machine Keys
#6 Square & Rectangular Machine Keys
#8 Square & Rectangular Machine Keys
#14 Square & Rectangular Machine Keys
3/32 Square & Rectangular Machine Keys
1/8 Square & Rectangular Machine Keys
5/32 Square & Rectangular Machine Keys
3/16 Square & Rectangular Machine Keys
1/4 Square & Rectangular Machine Keys
5/16 Square & Rectangular Machine Keys
3/8 Square & Rectangular Machine Keys
7/16 Square & Rectangular Machine Keys
1/2 Square & Rectangular Machine Keys
5/8 Square & Rectangular Machine Keys
3/4 Square & Rectangular Machine Keys
7/8 Square & Rectangular Machine Keys
1 Square & Rectangular Machine Keys
1 1/4 Square & Rectangular Machine Keys
1 1/2 Square & Rectangular Machine Keys
2 1/2 Square & Rectangular Machine Keys
3 Square & Rectangular Machine Keys
5 Square & Rectangular Machine Keys
6 Square & Rectangular Machine Keys