Imperial UNC Hex Sets Zinc

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SAE Grade 5 (American equivalent to Grade 8.8) high tensile fully threaded imperial coarse thread unified (UNC) hex bolt (set) in a bright zinc plated finish to help with corrosion resistance. 

Stocked in the most popular length sizes used in classic car restoration.

Available in any quantity - make your selection and add to the basket. All items will come fully bagged or boxed, depending upon quantity, and labelled for ease of reference and storage.

Product Info:

1/4" UNC 20tpi - 1/4" diameter, coarse thread of 20 threads per inch
5/16" UNC 18tpi - 5/16" diameter, coarse thread of 18 threads per inch
3/8" UNC 16tpi - 3/8" diameter, coarse thread of 16 threads per inch

Also available in UNF & metric sizes (see bolts & sets page).



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