![Odd little metal thing on all my window frames. The round but screws up and down and the bottom bit can slide up and down : r/whatisthisthing Odd little metal thing on all my window frames. The round but screws up and down and the bottom bit can slide up and down : r/whatisthisthing](https://i.redd.it/4odt24fz817b1.jpg)
Odd little metal thing on all my window frames. The round but screws up and down and the bottom bit can slide up and down : r/whatisthisthing
![Everbilt #10 x 3 in. White Hex-Head Sheet Metal Window Framework Screw (25-Piece per Pack) 810712 - The Home Depot Everbilt #10 x 3 in. White Hex-Head Sheet Metal Window Framework Screw (25-Piece per Pack) 810712 - The Home Depot](https://images.thdstatic.com/productImages/a6db3d18-1d3d-4af3-9208-c1ba5111b48c/svn/everbilt-standard-sheet-metal-screws-810712-64_1000.jpg)
Everbilt #10 x 3 in. White Hex-Head Sheet Metal Window Framework Screw (25-Piece per Pack) 810712 - The Home Depot
![Metal Window Frame Anchor Fixing with Screw M10 X 152MM (Pack of 10): Collated Screws: Amazon.com: Industrial & Scientific Metal Window Frame Anchor Fixing with Screw M10 X 152MM (Pack of 10): Collated Screws: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/31jKNpFUcOL.jpg)
Metal Window Frame Anchor Fixing with Screw M10 X 152MM (Pack of 10): Collated Screws: Amazon.com: Industrial & Scientific
![Phil Flat Head Self Drilling Screw for PVC Window Frame - China Self Drilling Screw, Phil Flat Head | Made-in-China.com Phil Flat Head Self Drilling Screw for PVC Window Frame - China Self Drilling Screw, Phil Flat Head | Made-in-China.com](https://image.made-in-china.com/2f0j00UchGSiWRvlot/Phil-Flat-Head-Self-Drilling-Screw-for-PVC-Window-Frame.jpg)
Phil Flat Head Self Drilling Screw for PVC Window Frame - China Self Drilling Screw, Phil Flat Head | Made-in-China.com
![Teks #12 x 1-1/2 in. External Hex Drive Washer Head Roofing Screws (300-Pack) 21422 - The Home Depot Teks #12 x 1-1/2 in. External Hex Drive Washer Head Roofing Screws (300-Pack) 21422 - The Home Depot](https://images.thdstatic.com/productImages/dabe2f1e-85e0-4670-b8e4-0e423a888bd8/svn/teks-self-piercing-screws-21422-77_600.jpg)
Teks #12 x 1-1/2 in. External Hex Drive Washer Head Roofing Screws (300-Pack) 21422 - The Home Depot
![Window frame screw for aluminium | Mechanical Fixings, Mounting Elements, Accessories, Anchoring and Mounting | Torggler Window frame screw for aluminium | Mechanical Fixings, Mounting Elements, Accessories, Anchoring and Mounting | Torggler](https://www.torggler.com/app/uploads/2021/04/Turboviti_2-1920x0-c-default.jpg)