Home | A&A Bolt & Screw, Co. A&A Bolt & Screw Company is a family owned, full service fastener distributor located in Baltimore, Maryland. We stock all types of fasteners ready for pickup or fast delivery. We keep … A&A Bolt & Screw Company is a family owned, full service fastener distributor located in Baltimore, Maryland. We stock all types of fasteners ready for pickup or fast delivery. We keep …