Common dash numbers include NAS523-3L through NAS523-12L, where the number indicates the screw size (e.g., -3 for #10 screw, -4 for 1/4 inch). The "L" indicates the material type (e.g., Nylon). Check the PDF for the current dash number index.

Kira sat in the conference room and felt the mirror lean. Around her, faces reflected corporate concern. Across the table, a legal counsel offered three choices: destroy, contain, or commercialize. Kira thought of Elias's last laugh, the image of the smeared concrete in the photograph, the way the mirror had changed the angle of the room until she could see the corridor with older versions of herself. She thought of the question the ghost had asked the first night: To be asked.

This quadrant specifies the fastener's basic part number (often or MS standards) and the material it is made from.

This quadrant indicates the diameter of the rivet shank and which side the manufacturer's head is located on.