Unified Fine Thread

UNC and UNF are symbols of Unified Screw Thread Series

The Unified Thread Series was agreed on by the United States, Great Britain and Canada in 1949 to obtain interchangeability.  Recently, modifications have been made to the original 1949 specifications for ease of use.
The Unified Thread Series is classified into coarse threads, fine threads and extra fine threads much like Metric screw threads are.
UNC: Is the symbol for Unified coarse pitch threads.
UNF: Is the symbol for Unified fine pitch threads.

Cage + Nut 1/4 UNF

F065
Add to cart
!

Cage For Nut (Zinc) All Size

F067
Add to cart
!

Nut + Cage 5/16 UNF

F067B
Add to cart
!
!

Nut 1/8 UNF

F201
Add to cart
!

Nut 3/16 UNF Zinc Plated

F202
Add to cart
!

Nut 3/16 UNF Self Locking

F202L
Add to cart
!

Nut 1/4 UNF

F203
Add to cart
!

Nut-1/4 UNF Self Locking

F203L
Add to cart
!

Nut 5/16 UNF

F204
Add to cart
!

Nut 5/16 UNF Self Locking

F204L
Add to cart
!

Nut 5/16 UNF Thin

F204T
Add to cart
!

Nut 3/8 UNF

F205
Add to cart
!

Nut 3/8 UNF Self Locking

F205L
Add to cart
!

Nut 7/16 UNF

F206
Add to cart
!

Nut 7/16 UNF Self Locking

F206L
Add to cart
!

Nut 7/16 UNF Slotted

F206S
Add to cart
!

Nut 1/2 UNF

F207
Add to cart
!

Nut 1/2 UNF Self Locking

F207L
Add to cart
!

Nut 9/16 UNF Self Locking

F208L
Add to cart
!