Monster Bolts was created as an online fastener store and is now a global fastener superstore selling U.S. and Metric screws, nuts, washers and sealed electrical connectors. Specializing in Socket screws (screws that take a hex or Allen key with either Button head, Flat head, Socket Cap screws or set screws types), Hex Bolts, Machine screws, sheet metal screws (both self-tapping and self-drilling), Deck screws and about every type of nut and washer you can imagine. We sell heavy-duty class 12.9 alloy steel whenever possible, but we also sell... read full review »