UNC High Tensile Imperial Steel Large Head Flange Bolt Screws 1/4" 5/16" 3/8 Thread - UNC (Imperial coarse thread) Grade - Grade 5 High Tensile Steel (8.8 Metric equivalent) Finish - Zinc Plated Steel Sizes listed are thread size x length measured from under the head. 1/4 is 20 threads per inch. 5/16" is 18 threads per inch 3/8" is 16 threads per inch All sizes are serrated under the head apart from the folowing sizes - 3/8 x 5/8" & 3/8 x 3/4" (none serrated). Simply choose your size and pack quantity from the menus available.
We are dedicated to ensuring the highest possible quality service to our customers. This item is in the category "Business, Office & Industrial\Fasteners & Hardware\Other Fasteners & Hardware". The seller is "spalding_fasteners" and is located in this country: GB.This item can be shipped worldwide.