Hex Nuts is the most used nut in industrial and commercial applications. These hexagon shaped nuts can be used with all types if machine-thread fasteners including anchors, bolts, screws, studs and threaded rod. The hex nut is used with other fasteners ,typically a bolt to close or complete a fastening.
UNC is a corase thread in US ,generally speaking UNC nut is hex nut with UNC thread.The demension folllowing the standard ANSI B18.2.2 .
What is unc nut dimensions?
There are many dimension of UNC nut , the unit is inch.
The common demension(diameter) is belowing :
1/4 UNC Nut
3/8 UNC Nut
1/2 UNC Nut
5/8 UNC Nut
3/4 UNC Nut
UNC nuts come in zinc, plain, stainless steel and galvanized finishes to provide a long lasting durability.


1/4,5/16,3/8,7/16,1/2,9/16,5/8,3/4,7/8,1,1-1/8

What is the difference between UNC and UNF nuts
What is the ANSIB18.2.2 hex nut dimension