These Class 8.8 cap screws are recommended for medium duty bolting applications. The Class 8.8 bolt is compatible with Class 8 and Class 10 mating 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 internally threaded hole. 1-piece per pack Steel construction Zinc-plated M10-30 mm Features Item Weight 0.056 ACQ Rated Fastener No Fastener/Connector Material Steel Material Steel Measurement Standard Metric Fastener Thread Type Standard Fastener Plating Zinc Product Weight (lb.) 0.05 Drive Style Hex Fastener Length 30 mm Returnable 180-Day Fastener Type Specialty Fastener Package Quantity 1 Fastener Length (in.) 1.18 Assembled Width (in.) 0.75 in Assembled Depth (in.) 0.75 in Head diameter (in.) .39 Assembled Height (in.) 1.37 in Manufacturer Warranty None