ProTek RC 4-40 x 3/8" "High Strength" Socket Head Cap Screws (10)
This is a pack of ten 4-40 x 3/8" "High Strength" Socket Head Cap Screws from ProTek R/C. These are made from standard grade 8 steel which has a minimum tensile strength of 180,000 PSI. These screws are the strongest you can get and are suitable for the most demanding applications! Most manufacturer brand standard screws are not grade 8 steel, so these are a great upgrade for your car, truck or helicopter!
This product was added to our catalog on July 1, 2009.
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