Fasteners are not required for the installation of these springs These are tension springs constructed from heat treated steel. They help to hold your window screens into the sliding aluminum window screen c... Tension springs of this style mount into the corners of 45 degree cut aluminum screen frames and add holding tension when inserted into sliding window screen channels. 1x Lego Drehteller schwarz 4x4x2/3 Rund Stein grün 61485 60474c01 Prime-Line MP5577 Prime-Line Products MP5577 Window Screen Tension, 1/4 In. X 2-3/4 In Bulk Screen Parts Constructed of heat treated spring steel Window Screen Tension Springs, 1/4 In. x 3-1/8 In., Spring Steel, Zinc Plated Used for installation of aluminum screens; these tension springs install into corners of miter-cut aluminum screen corners , 1/4 in., wide x 2-3/4 in., long , Zinc plated finish No tools are required for these easy-2-install tension springs.
