5/16" UNC U Nuts 

Black Phosphate Coated 

Thread Pitch - 18 TPI 

Dimensions - 27mm long x 17mm wide x 13mm deep

These U nuts are used primarily on 1960s to 1980s General Motors front sheet metal. These are also found on other American and Australian Vehicles. 

Use in conjunction with our Flange/Body Bolts. 

No need to mess around with old rusty U nuts anymore. 

Price is per each