SJ 3767 Dual Lock™ Reclosable Fastener is a fastener having a Type 400 stem pattern. SJ 3767 fastener is a 1.5 inch. (38 mm) square fastener with two counter-sunk holes. SJ 3767 fastener is composed of polyolefin plastic and is black in color. Weight of one piece is 4 grams. Operating temperature range is -20°F to 200°F (-29°C to 93°C).