Southco E6-10-301-20 Series adjustable torque position control hinge with holes, Acetal Copolymer, 1.69 inch leaf height, 6.99 in-lbf symmetric torque, black, Acetal Copolymer adjustable torque position control hinge allow users the flexibility to define and adjust the operating effort required to move or position panels. Aesthetic designs and concealed mounting hardware options provide a clean presentation. User-adjustable operating effort. Corrosion-resistant materials. Ability to conceal mounting hardware. Minimum cycle performance: 20, 000 cycles within +/- 20 percent of static torque specification. 0.790 nm (6.99 in-lbf) forward and reverse symmetric torque. Installation: rivet/screw (thru hole). leaves: Acetal. Pin: polycarbonate. Adjustment screw and nut: stainless steel. Radial load: 1780 n (400 lbf). axial load: 890 n (200 lbf). operating temperature range: 20/150 degree Fahrenheit.