These Grade 8 cap screws are recommended for high stress bolting applications and are among the strongest grade of fastener available in steel. The grade 8 bolt is compatible with grade 8 nuts and washers of the same thread pitch and diameter. An alternative for using them without nuts is to install them directly into a compatible female threaded hole. 1-piece per bag Steel construction Yellow zinc-plated 3/8 in. -16 x 2-1/2 in. Grade 8 Features Item Weight 0.09074133599999999 ACQ Rated Fastener No Fastener Length 2-1/2 in Product Weight (lb.) 0.09 Fastener/Connector Material Steel Material Steel Measurement Standard SAE Fastener Plating Zinc Drive Style Hex Returnable 180-Day Fastener Thread Type Coarse Fastener Type Hex Bolt Package Quantity 1 Assembled Depth (in.) 2.50 in Assembled Height (in.) 0.38 in Fastener Length (in.) 2.5 Head diameter (in.) 0.5625 Assembled Width (in.) 0.38 in Manufacturer Warranty None